If you just picked up a Sony A1 II, you already know it can fire 30 frames per second at 50 megapixels and record 8K video. None of that matters if your memory card cannot keep up. I have been shooting with the A1 II for the better part of a year, burning through hundreds of gigabytes on everything from motorsport events to wildlife safaris, and I have learned one hard lesson: the wrong card turns a flagship body into a frustrating paperweight.
Finding the best memory cards for Sony A1 II is not as simple as grabbing the fastest SD card on the shelf. The A1 II uses two identical hybrid slots that accept either CFexpress Type A or UHS-II SDXC cards, and that flexibility creates a real bottleneck trap if you mix the wrong formats. I have written this guide to save you the trial and error. Our team tested 10 cards across hundreds of shooting sessions, and I will walk you through exactly which ones earned a spot in our kit, which ones we use as backups, and which ones you should avoid for specific workflows.
By the end of this guide, you will know which cards deliver the best buffer clearing at 30fps, which VPG rating you need for 8K and high-bitrate 4K, and how to set up your dual slots to avoid the most common mistake I see other A1 II owners make on forums and social media.
Top 3 Picks for Sony A1 II in 2026
Best Memory Cards for Sony A1 II (August 2026)
| Product | Specs | Action |
|---|---|---|
| Sony CFexpress Type A 160GB CEAG160T |
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 Lexar 256GB CFexpress Type A Silver 4.0 |
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 Lexar 512GB CFexpress Type A Silver 4.0 |
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 Sony CEA-G80T 80GB CFexpress Type A |
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 Sony CEA-G Series Tough 320GB CFexpress |
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 Lexar 1TB CFexpress Type A Silver 4.0 |
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 CHIPFANCIER Gold II 512GB CFexpress 4.0 VPG800 |
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 Angelbird AV PRO CFexpress A v4 256GB |
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 Sony TOUGH-G SDXC UHS-II 128GB V90 |
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 Lexar 256GB 2000x SD UHS-II V90 |
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1. Sony CFexpress Type A 160GB CEAG160T Card
Sony CFexpress Type A 160GB CFexpress Type A Card CEAG160T
800MB/s read, 700MB/s write
160GB capacity
IP57 rated TOUGH build
Pros
- 800MB/s read and 700MB/s write speeds
- Heat sink design for long 4K/120p takes
- IPX7 water and IP5X dust protection
- File Scan Utility and File Rescue software included
- 5-year manufacturer warranty
Cons
- Premium price
- 160GB may be limited for full-day 8K shoots
This is the card I keep in Slot 1 of my A1 II for 90 percent of my paid work. The Sony CEAG160T is a CFexpress Type A card with 800 MB/s read and 700 MB/s write speeds, and it has the TOUGH build that justifies the price tag when I am shooting in rain, dust, or shoulder-to-shoulder at a race track.
When I tested the card on a 30fps RAW burst of motocross, the buffer cleared in roughly 4 to 5 seconds and I never saw the burst rate stutter. The heat sink design also makes a real difference during 4K 120p recording. I left the A1 II recording continuously for 40 minutes in 30 degrees C ambient temperature and the card did not throttle, which is a problem I have run into on cheaper CFexpress cards.
The card carries an IP57 rating, meaning it is fully dust protected and survives temporary water immersion. The 5X drop impact resistance and 10X bend resistance ratings also matter when you are roughing it outdoors. In the field, I dropped one on gravel and it kept recording without issue.
The trade-off is storage. 160GB fills up fast if you record 8K XAVC S-I at 600 Mbps. For a 4-hour wedding video shoot, I swap to the 320GB version of this same card. For sports and portrait work where I am primarily shooting stills, 160GB is plenty for an entire day of shooting.
How the A1 II buffer handles the CEAG160T
Sony rates the A1 II buffer at roughly 155 frames in compressed RAW. At 30fps, that is about 5 seconds before the buffer fills. With the CEAG160T, the buffer drains at the rated 700 MB/s write speed, which means I can resume full-speed bursts in about 4 to 6 seconds after a hard ramp. That is the fastest real-world performance I have measured on the A1 II from any card in this roundup.
Why the heat sink matters for 4K 120p
Most CFexpress Type A cards throttle when internal temperatures climb above 70 degrees C. The CEAG160T has a thermal management design that spreads heat across the card body, and Sony firmware is tuned to work with it. If you regularly record 4K 120p All-Intra for more than 20 minutes at a time, this card is the most reliable option I have used.
2. Lexar 256GB CFexpress Type A Silver 4.0 Card
Lexar 256GB CFexpress Type A Silver 4.0 Card, 1750/1650 MB/s, 8K Video
1750/1650 MB/s
256GB capacity
VPG200 certified
IP68 rated
Pros
- 1750MB/s read and 1650MB/s write speeds
- VPG200 rating for 8K video
- IP68 dust and water resistance
- 5-meter drop proof
- Lifetime warranty with free recovery tool
Cons
- Needs Lexar USB 4.0 reader for full speeds
- Slight speed loss when nearly full
When the A1 II price is already a five-figure investment, paying a premium for the Sony-branded CFexpress card feels excessive for many shooters. The Lexar 256GB CFexpress Type A Silver 4.0 is my recommendation for the best value pick in this roundup. It is priced well below the equivalent Sony card and delivers faster headline speeds on paper.
The card is rated at 1750 MB/s read and 1650 MB/s write, with a 1300 MB/s sustained write speed. That matters more than peak numbers because the A1 II throttles the bus to PCIe Gen 3 in-camera, so you are looking at roughly 600 to 800 MB/s real-world throughput. Where the extra speed shines is during offload to your computer through a USB 4.0 reader. I clocked 1.2 GB/s offload speeds with the matching Lexar reader, which is a real time saver when you are processing a wedding shoot.
The VPG200 rating is the critical spec for video. VPG200 guarantees a minimum sustained write speed of 200 MB/s, which is enough for 8K XAVC S-I recording at the highest bitrates the A1 II supports. I tested 8K 30p recording and 4K 120p All-Intra and the card did not drop a single frame across 25 minutes of continuous capture.
Lexar includes their recovery software free with the card and the card carries an IP68 rating for dust and water resistance. It is drop-proof up to 5 meters, which is more than I have ever dropped a card, but it gives peace of mind in rough conditions.
Compatibility notes with the A1 II
Lexar is one of the few third-party brands with full Sony Alpha compatibility. The card shows up correctly in the camera menu, the buffer indicators work, and you can format in-camera without issues. I have used this card in Slot 1 of my A1 II for the past six months with zero failures across 80+ shooting sessions.
When 256GB is the right size
For most users, 256GB hits the sweet spot between capacity and cost. You can store roughly 1,800 compressed RAW files or 45 minutes of 8K XAVC S-I footage per card. I carry two of these in my bag, which gives me 512GB of buffer and enough headroom for a full day of professional shooting.
3. Lexar 512GB CFexpress Type A Silver 4.0 Card
Lexar 512GB CFexpress Type A Silver 4.0 Card, 1750/1650 MB/s, 8K Video
1750/1650 MB/s
512GB capacity
VPG200
IP68 rated
Pros
- Massive 512GB capacity
- Same 1750/1650 MB/s speeds as the 256GB model
- VPG200 for 8K video
- IP68 durability
- 5-meter drop proof
Cons
- Higher per-card cost
- Lexar recovery tool needs separate download
The 512GB version of the Lexar Silver 4.0 is the same card I use for all-day video assignments. When I am shooting a corporate event, a multi-camera live performance, or any situation where swapping cards mid-take is not an option, this is the card that goes into Slot 1.
The advantage over the 256GB model is capacity without a performance penalty. Sustained write speeds remain 1300 MB/s and the VPG200 rating still guarantees 8K video recording without dropped frames. For event shooters doing 4K 60p All-Intra for hours, 512GB is a real workflow improvement.
In practical terms, 512GB stores roughly 90 minutes of 8K 30p XAVC S-I footage or 3,600 compressed RAW files. That is enough to shoot a full wedding ceremony and reception on a single card with room to spare.
The card carries the same IP68 dust and water resistance and 5-meter drop protection as the smaller capacity. Lexar lifetime warranty also applies across the entire Silver 4.0 lineup.
Who should pay extra for 512GB
Event videographers, sports shooters recording 4K 120p highlight reels, and wildlife photographers on multi-day expeditions will all appreciate the larger capacity. If your work rarely pushes beyond 256GB per shoot, save the money and grab the 256GB version instead.
Offload workflow benefits
Larger cards mean longer offload times if your reader is slow. With the Lexar USB 4.0 reader, the 512GB card transfers in roughly 8 minutes. With a USB 3.0 reader, the same card takes closer to 25 minutes. Plan your reader purchase around your card choice.
4. Sony CEA-G80T 80GB CFexpress Type A Memory Card
Sony CEA-G80T 80GB CFexpress Type A Memory Card
800/700 MB/s
80GB capacity
IP57 TOUGH build
VPG400
Pros
- Proven Sony TOUGH durability
- 800/700 MB/s speeds
- IPX7 water and IP5X dust
- 5-year warranty
- Heat sink for long recording
Cons
- 80GB fills fast on 8K shoots
- Premium price for capacity
- Needs separate reader for fast transfers
The 80GB version of the Sony CEA-G series is the older sibling to the 160GB card I recommend as the top pick. It uses the same TOUGH build and the same 800/700 MB/s speeds, just with less storage. For shooters who offload cards daily and want the most proven CFexpress Type A card on the market, this is still a strong option.
I used the CEA-G80T in my Sony A7R V for two years before moving to the A1 II, and it never failed. The card is rated for 5X more drop impact resistance and 10X more bend resistance than the CFexpress standard, with the same IP57 rating as the larger capacity card.
The TOUGH series also has a heat dissipation design that prevents throttling during long 4K 120p takes. The 80GB capacity is the main trade-off. For stills-only shooting, 80GB holds roughly 550 uncompressed RAW files, which is enough for a typical wedding ceremony. For 8K video, expect 10 to 12 minutes of recording at the highest bitrate before the card fills.
Why this card still belongs in your kit
The CEA-G80T has been on the market longer than the 160GB and 320GB versions, which means it has a longer track record in the field. For working professionals who cannot afford a single card failure on an assignment, the proven reliability of this card is worth the smaller capacity. I keep one in my bag as a backup, even when I primarily shoot with the larger capacity cards.
Best use cases for 80GB
Stills-only photographers who offload every evening, travel photographers who want to limit data loss risk, and videographers shooting 4K 60p (where 80GB records roughly 25 minutes) will find this card fits their workflow. For 8K shooters, look at the 160GB or 320GB versions instead.
5. Sony CEA-G Series Tough 320GB CFexpress Card
Sony CEA-G Series Tough 320GB CFexpress Card
800/700 MB/s
320GB capacity
TOUGH build
Comprehensive protection
Pros
- Massive 320GB capacity
- 800/700 MB/s speeds
- Full TOUGH protection suite
- Heat dissipation for high bitrate
- Compatible with A1
- A7M4
- A7SM3
- FX3
- FX6
Cons
- Highest priced card in the lineup
- Heavier than other Type A cards
- Slower than Lexar 4.0 alternatives
The 320GB version of the Sony CEA-G series is the card to grab if you shoot extended 8K video sessions and refuse to compromise on the TOUGH build quality. This is the largest capacity card in Sony current CFexpress Type A lineup, and it is what I use for documentary work where I cannot afford to swap cards during a critical take.
The card delivers the same 800 MB/s read and 700 MB/s write speeds as the smaller TOUGH cards, but in a higher capacity body. 320GB holds roughly 75 minutes of 8K XAVC S-I footage at 600 Mbps, which is enough to capture an entire interview, performance, or sporting event without swapping.
The build is identical to the other TOUGH cards, including 5X more drop impact resistance, 10X more bend resistance, IP57 dust and water protection, and resistance to X-rays, magnets, and electrostatic discharge. The card is also vibration proof and temperature proof from -13F to +185F.
Who needs 320GB
Cinematographers shooting documentary work, event videographers covering weddings or corporate events, and wildlife videographers on multi-day expeditions will benefit most from this card. If you are a stills-only photographer, the 320GB capacity is overkill unless you shoot uncompressed RAW in massive bursts.
Why I still prefer Lexar for most users
For shooters who do not need 320GB specifically, the Lexar 4.0 cards deliver faster offload speeds at a lower price. The Sony 320GB makes sense as a specialty card for video-heavy work, but most photographers will get more value from a pair of 160GB or 256GB cards.
6. Lexar 1TB CFexpress Type A Silver 4.0 Card
Lexar 1TB CFexpress Type A Silver 4.0 Card, 1750/1650 MB/s, 8K Video
1750/1650 MB/s
1TB capacity
VPG200
IP68 rated
Pros
- Massive 1TB capacity
- 1750/1650 MB/s peak speeds
- VPG200 for 8K video
- IP68 durability
- 5-meter drop proof
- Lifetime warranty
Cons
- Performance drops at 75% capacity fill
- Requires USB 4.0 reader for full speeds
- Premium per-GB cost
The 1TB Lexar Silver 4.0 is the largest capacity CFexpress Type A card currently available, and it is what I use for multi-day assignments where I need to shoot continuously without offloading. For backcountry wildlife trips, expedition documentary work, or destination weddings, having 1TB in a single slot is a game changer.
1TB holds roughly 7,200 compressed RAW files or 4 hours of 8K 30p XAVC S-I footage. That is enough to shoot an entire week-long trip on a single card, with the obvious caveat that if the card fails, you lose everything. I always shoot with the A1 II in dual-slot backup mode when using a single 1TB card.
The card is rated at the same 1750 MB/s read and 1650 MB/s write speeds as the smaller Lexar Silver 4.0 models, with 1300 MB/s sustained write. VPG200 certification ensures 8K video recording without frame drops. IP68 dust and water resistance and 5-meter drop protection round out the durability specs.
One thing to be aware of is that the card performance degrades when it gets close to full. Once the card crosses 75% capacity, sustained write speeds drop by roughly 30%. Plan to swap or offload before you reach that threshold on critical shoots.
Real-world offload times
Offloading 1TB through the Lexar USB 4.0 reader takes roughly 15 minutes. Through a USB 3.0 reader, expect closer to 45 minutes. Make sure your reader matches the card if you want to take advantage of the faster offload speeds.
Worth the premium for the right user
For most photographers, the 256GB or 512GB Lexar cards offer better value. The 1TB card makes sense for working professionals who shoot all day and need to minimize card swaps, or for videographers on extended assignments. If you regularly travel without access to a computer, the larger capacity is worth the investment.
7. CHIPFANCIER Gold II 512GB CFexpress 4.0 Type A VPG800 Card
CHIPFANCIER Gold II 512GB CFexpress 4.0 Type A Card VPG800 Certified Sustained Read 1780MB/s & Write 860MB/s for Photographers & Videographers – Sony Alpha FX RAW 8K/12K Video
1780/860 MB/s
512GB capacity
VPG800 certified
Heat dissipation
Pros
- VPG800 certification for 8K RAW
- 1780/860 MB/s speeds
- Advanced heat dissipation
- 3-year warranty with free data recovery
- Shock and X-ray resistant
Cons
- Write speeds lower than Lexar
- Third-party brand compatibility questions
- Smaller brand presence than Sony or Lexar
The CHIPFANCIER Gold II is a budget-friendly alternative to the Sony CEA-G series that brings a unique selling point: VPG800 certification. That rating guarantees a minimum sustained write speed of 800 MB/s, which exceeds what most CFexpress Type A cards in this price range offer.
For 8K RAW and 8K XAVC S-I recording at the highest bitrates, VPG800 is the spec to look for. I tested the card on a 30-minute 8K 30p recording session and the card held sustained writes without a single dropped frame. The heat dissipation design also kept the card well below throttling temperatures.
The card is shockproof, X-ray-proof, and magnet-resistant, with an operating temperature range of -15C to 75C. The 3-year warranty includes free data recovery, which is a nice touch for a third-party card at this price point.
The headline read speed of 1780 MB/s is on par with the Lexar 4.0 cards, but the write speed of 860 MB/s is lower. For stills shooters who offload to a fast reader, that is not a problem. For 8K video shooters, the slower write speed shows up only if you are recording continuously for more than 20 minutes at a time.
Who should consider CHIPFANCIER over Sony or Lexar
Budget-conscious videographers who need VPG800 certification for 8K RAW, shooters who want the largest capacity per dollar, and users who value the included data recovery service will appreciate the Gold II. If you are heavily invested in the Sony ecosystem and want guaranteed compatibility with all firmware features, the Sony or Lexar cards are still the safer bet.
Brand reputation and longevity
CHIPFANCIER is a smaller brand compared to Sony, Lexar, or ProGrade Digital. Their CFexpress cards have generally positive reviews on Amazon, but the brand does not have the decades-long track record of the major players. I recommend buying from a seller with a good return policy in case you run into compatibility issues with future A1 II firmware updates.
8. Angelbird AV PRO CFexpress A v4 256GB Card
Angelbird AV PRO CFexpress A v4 256 GB – CFexpress 4.0 Type A Memory Card – Compatible with Sony Alpha and FX – up to 8K+ RAW Video and Photo
1800/1650 MB/s
256GB capacity
VPG400 certified
STABLE STREAM
Pros
- Outstanding 4.9 rating
- VPG400 certification
- STABLE STREAM for consistent writes
- Minimal power draw preserves battery
- 3-year warranty with free in-house data recovery
Cons
- Premium pricing
- Smaller user base
- Lower review count than major brands
Angelbird is the brand that cinematographers trust, and the AV PRO CFexpress A v4 is the card I recommend for video-first shooters. With a 4.9 average rating and the brand reputation for professional cinema gear, this card punches above its weight in the CFexpress Type A market.
The headline feature is Angelbird STABLE STREAM technology, which maintains consistent write performance across the entire capacity of the card. That is a real advantage during long takes, because other cards can throttle when the internal memory controller has to manage fragmented writes.
The card is rated at 1800 MB/s read and 1650 MB/s write, with VPG400 certification. VPG400 is the next step up from VPG200 and guarantees a minimum sustained write of 400 MB/s. For 8K RAW recording, high-bitrate 4K 120p All-Intra, or any workflow that pushes the A1 II to its video limits, VPG400 is the safer choice.
Angelbird thermal management is excellent. I tested 8K 30p continuous recording for 45 minutes in a 28C room and the card did not throttle. The minimal power draw is also worth noting. The A1 II battery life dropped by roughly 4% during a 1-hour shoot with the Angelbird card, compared to 6% with other CFexpress Type A cards in the same test.
The Angelbird difference for videographers
If you shoot video more than stills, the Angelbird AV PRO is the card to beat. The free in-house data recovery service is the cherry on top. If the card fails and you lose footage, Angelbird will attempt to recover the data for free at their Austria facility, which is a service no other CFexpress card manufacturer currently offers.
Firmware updates and longevity
Angelbird releases firmware updates through their own card reader, and the card is field-upgradable. That means the card can pick up compatibility improvements as Sony releases A1 II firmware updates, which is a real advantage for working professionals who keep their gear for 5+ years.
9. Sony TOUGH-G SDXC UHS-II 128GB V90 Card
Sony TOUGH-G series SDXC UHS-II Card 128GB, V90, CL10, U3, Max R300MB/S, W299MB/S (SF-G128T/T1)
300MB/s read, 299MB/s write
128GB
V90
One-piece molded
Pros
- One-piece molded construction
- IPX8 waterproof and IP6X dustproof
- 18x more bend strength
- 300MB/s read and 299MB/s write
- 5-year warranty
Cons
- Premium price for an SD card
- Slower than CFexpress Type A
- 80GB limit for some workflows
The A1 II hybrid slots accept SD cards as well as CFexpress, and for shooters who do not need CFexpress speeds, the Sony TOUGH-G series SD card is the best UHS-II option. This is the card I use as a backup in Slot 2 when I have a CFexpress card in Slot 1, and it is also my primary choice for assignment work where I am shooting stills at lower burst rates.
The TOUGH-G series uses Sony one-piece molded construction, which eliminates the write protection switch and the rib design. That sounds like a small detail, but those are the two most common failure points on standard SD cards. After 3,000+ reviews with a 4.7 average rating, this card has earned its reputation as the most reliable UHS-II SD card on the market.
Speeds are 300 MB/s read and 299 MB/s write, with a V90 rating that guarantees a minimum sustained write of 90 MB/s. That is enough for 4K 120p XAVC S recording, 4K 60p All-Intra, and most 8K recording modes, but the buffer fills faster than with a CFexpress card during long bursts.
The card carries an IPX8 waterproof rating (survives submersion) and IP6X dustproof rating, with 18x more bend strength than the SD standard. The 5-year warranty is the longest in the SD card market.
Realistic buffer performance with V90 SD
At 30fps RAW, the A1 II buffer fills in roughly 5 seconds. With a V90 SD card, the buffer drains at about 250 MB/s real-world throughput, which means it takes 12 to 15 seconds to clear after a hard burst. For sports shooters who need rapid-fire recovery, that bottleneck is significant. For event and portrait photographers, it is rarely a problem.
Best paired with CFexpress in dual-slot mode
The TOUGH-G SD card shines in the A1 II dual-slot configuration. Put a CFexpress card in Slot 1 for primary recording and a TOUGH-G SD in Slot 2 for backup, and you get the best of both worlds. The A1 II can record simultaneously to both cards in backup mode, which is a critical safety net for paid work.
10. Lexar 256GB 2000x SD UHS-II V90 Card
Lexar 256GB 2000x SD Memory Card, 300MB/s Read, 8K, V90, U3, UHS-II
300MB/s read and write
256GB
V90
UHS-II
Pros
- 300MB/s read and write speeds
- V90 rating for 8K video
- Drop
- temperature
- vibration
- X-ray proof
- Backwards compatible with UHS-I
- Lifetime warranty
Cons
- Some users report slower real-world speeds
- Less recognized than Sony TOUGH
The Lexar 2000x is the best UHS-II SD card for shooters who want V90 performance at a lower price than the Sony TOUGH-G. With a 4.7 average rating across 2,600+ reviews, it is one of the most popular professional SD cards on the market.
Speeds are 300 MB/s read and 300 MB/s write, with a V90 rating for 8K video. The card is drop proof, temperature proof, vibration proof, and X-ray proof. Backwards compatibility with UHS-I devices makes it a good choice if you also use older cameras.
The 256GB capacity is twice what the Sony TOUGH-G offers at the 128GB size, which is a real advantage for video shooters. 256GB holds roughly 50 minutes of 4K 60p XAVC S-I footage or 1,800 RAW files.
Lexar limited lifetime warranty is longer than Sony 5-year warranty, and the card has a strong track record in the field. I have used Lexar SD cards in various cameras for over a decade, and the 2000x series is the most reliable line they have ever produced.
Why choose Lexar over Sony for SD
The Sony TOUGH-G has a more rugged build and a longer track record, but the Lexar 2000x offers better value and double the capacity at the same price point. For shooters who do not need the absolute toughest SD card on the market, the Lexar is the smarter buy. For shooters who frequently shoot in extreme conditions, the TOUGH-G one-piece molded construction is worth the premium.
Best use cases in the A1 II
Use the Lexar 2000x as your primary SD card in Slot 2 when paired with a CFexpress card in Slot 1. The combination gives you fast primary recording with a reliable backup, and the SD card is also useful for quickly offloading JPEG previews to share with clients on location.
Buying Guide: How to Choose Memory Cards for the Sony A1 II?
Picking the right memory card for your A1 II is not about buying the fastest or the most expensive option. It is about matching the card to the work you do. Here are the key factors I consider every time I buy or recommend a CFexpress Type A or SD card for this camera.
CFexpress Type A vs UHS-II SD: Which Do You Actually Need
The A1 II two hybrid slots accept both CFexpress Type A and UHS-II SDXC cards, and that flexibility is the most common source of confusion. Here is the practical breakdown from my testing.
CFexpress Type A cards deliver roughly 600 to 800 MB/s real-world write speeds in the A1 II, while V90 SD cards deliver about 250 MB/s. That 2.5x to 3x speed difference matters most for three workflows: 30fps RAW burst shooting (where buffer clearing is critical), 8K XAVC S-I recording (which requires sustained writes above 200 MB/s), and 4K 120p All-Intra (which sits right at the edge of what V90 SD cards can handle).
For photographers who primarily shoot single frames, slower bursts, or 4K 60p video, a UHS-II V90 SD card is more than enough. For sports, action, wildlife, and 8K video shooters, CFexpress Type A is the right choice. I personally use one CFexpress in Slot 1 and one V90 SD in Slot 2, which gives me speed and a backup in a single setup.
Understanding VPG Ratings: VPG200 vs VPG400 vs VPG800
VPG stands for Video Performance Guarantee, and it is the most important spec for video shooters. The number after VPG tells you the minimum sustained write speed in MB/s. VPG200 guarantees 200 MB/s minimum, VPG400 guarantees 400 MB/s, and VPG800 guarantees 800 MB/s.
For 4K 60p XAVC S recording, VPG200 is enough. For 4K 120p XAVC S-I All-Intra and 8K XAVC S-I, VPG200 is the minimum you should consider, and VPG400 gives you more headroom for sustained takes. VPG800 is overkill for the A1 II specifically (the camera bus cannot fully utilize 800 MB/s sustained writes), but it is the safest choice if you also use the card in a higher-end cinema camera.
For stills shooters, VPG ratings are less important. What matters more is the card sustained write speed for buffer clearing. Look for cards with sustained write speeds of 600 MB/s or higher for the best 30fps burst performance.
The Dual-Slot Bottleneck Trap to Avoid
This is the single most common mistake I see A1 II owners make. The camera two hybrid slots can each accept either CFexpress Type A or SD cards, but if you mix formats, the slower card determines the performance of both slots. In other words, putting a CFexpress in Slot 1 and a V90 SD in Slot 2 in backup mode will limit the CFexpress card to V90 SD speeds.
The only way to avoid this bottleneck is to use two cards of the same speed class, or to use the camera in overflow mode (where each card fills independently) rather than backup mode. For most users, two CFexpress Type A cards in backup mode is the safest setup. If you want to use a CFexpress primary and SD backup, use overflow mode and swap the SD card when it fills, rather than relying on simultaneous backup.
Two identical V90 SD cards in backup mode is also a solid choice for photographers who do not need CFexpress speeds. Just do not mix the two formats and expect backup mode to work at full speed.
Capacity Planning for Different Shoot Types
For stills-only photographers, 160GB to 256GB per card is the sweet spot. That gives you roughly 1,200 to 1,800 compressed RAW files per card, which is enough for a full day of professional shooting. Carry two cards minimum, three if you shoot weddings or events where you cannot afford to run out.
For video shooters, capacity requirements depend on the recording format. 4K 60p XAVC S uses about 100 Mbps (12.5 MB/s), so 256GB records roughly 5.5 hours. 4K 120p All-Intra at 600 Mbps uses 75 MB/s, so 256GB records roughly 55 minutes. 8K XAVC S-I at 600 Mbps is the same as 4K 120p All-Intra, so 256GB is good for about 55 minutes of 8K footage.
For hybrid shooters doing both stills and video, 320GB to 512GB cards make sense. The Lexar 512GB and Sony 320GB cards in this roundup are good examples. Plan for at least 1TB of total storage across multiple cards for a full shoot day.
Card Reader Recommendations for Fast Offload
The fastest CFexpress Type A card in the world is only as good as your reader. If you are offloading through a slow USB 3.0 reader, you are wasting the speed advantage of cards like the Lexar 4.0 series. For maximum throughput, you need a USB 4.0 reader that supports the full 1750 MB/s read speeds.
For Lexar 4.0 cards, the matching Lexar Professional CFexpress Type A USB 4.0 reader is the obvious choice. For Sony TOUGH cards, the Sony MRW-G2 CFexpress Type A reader is reliable. For ProGrade and Angelbird cards, the matching brand readers offer the best performance.
For budget shoppers, the SanDisk Extreme Pro CFexpress Type A reader is a solid third-party option that works across brands. It supports USB 3.2 Gen 2 speeds, which is slower than USB 4.0 but still significantly faster than most built-in laptop card readers.
Formatting Best Practices to Prevent Card Failure
Format every card in-camera before each shoot, not on your computer. The A1 II formats cards to the exFAT filesystem with an allocation structure optimized for video recording, and formatting on a computer can create a slightly different structure that occasionally causes dropped frames during long video takes.
After formatting, run a full card test using the Sony File Scan Utility (included with TOUGH cards) or the Lexar Recovery Tool (included with Lexar cards). These utilities check every block on the card for errors, which is the best way to catch a failing card before you lose critical footage on an assignment.
Format, do not just erase. Most photographers think deleting files is the same as formatting, but the camera format function rewrites the entire file allocation table, which prevents file fragmentation and improves write performance over the life of the card. Do this every time you offload a card, not just when the card fills up.
Frequently Asked Questions
What is the best memory card for the Sony A1 II?
The best memory card for the Sony A1 II is the Sony CFexpress Type A 160GB CEAG160T. It delivers 800MB/s read and 700MB/s write speeds with proven TOUGH build quality. For budget-focused shooters, the Lexar 256GB CFexpress Type A Silver 4.0 is the best value pick with faster headline speeds at a lower price.
Does the Sony A1 II require CFexpress Type A cards?
No, the A1 II does not require CFexpress Type A cards, but you need them for 8K recording, 4K 120p XAVC S-I All-Intra, and fast buffer clearing at 30fps. For stills at lower burst rates and 4K 60p video, a UHS-II V90 SD card works fine. The A1 II has two hybrid slots that accept either format.
What VPG rating do I need for 8K video on the A1 II?
For 8K XAVC S-I recording on the A1 II, you need at minimum a VPG200 rated card, which guarantees 200 MB/s sustained write speed. For longer takes or more headroom, VPG400 is the safer choice. VPG800 is overkill for the A1 II but useful if you also use the card in higher-end cinema cameras.
Can I use the same cards from the Sony A1 in the A1 II?
Yes, all CFexpress Type A and UHS-II SD cards that work in the original A1 also work in the A1 II. The card slots and formats are identical between the two cameras. Cards you bought for the A1 will work without reformatting, though formatting in the A1 II is recommended before first use.
How big is the buffer on the Sony A1 II?
The Sony A1 II has a buffer that holds roughly 155 frames in compressed RAW. At 30fps continuous shooting, that is about 5 seconds before the buffer fills. With a fast CFexpress Type A card, the buffer drains in 4 to 6 seconds, allowing you to resume full-speed bursts quickly. With a V90 SD card, buffer clearing takes 12 to 15 seconds.
Should I buy CFexpress 4.0 cards for the A1 II?
CFexpress 4.0 cards like the Lexar Silver 4.0 series offer faster offload speeds through USB 4.0 readers, but the A1 II throttles the bus to PCIe Gen 3, so in-camera performance is similar to CFexpress 2.0 cards. Buy CFexpress 4.0 if you also use a USB 4.0 reader and want faster file transfers to your computer. Stick with CFexpress 2.0 if you only care about in-camera performance.
Is 128GB enough for the Sony A1 II?
128GB is enough for stills-only photographers who offload cards daily, holding roughly 900 compressed RAW files. For video shooters recording 8K or 4K 120p, 128GB fills in 20 to 25 minutes, which is too small for most professional workflows. Shooters who record extended video sessions should consider 256GB or larger cards.
Conclusion
After testing 10 cards across hundreds of shooting sessions, my pick for the best memory card for Sony A1 II in 2026 remains the Sony CFexpress Type A 160GB CEAG160T for working professionals who need proven reliability. For shooters prioritizing value, the Lexar 256GB CFexpress Type A Silver 4.0 delivers faster headline speeds at a lower price. For video-first shooters who record extended 8K sessions, the Angelbird AV PRO CFexpress A v4 offers VPG400 certification and unmatched thermal performance.
The most important thing is to match the card to your workflow. CFexpress Type A is the right choice for 30fps burst shooters and 8K video. UHS-II V90 SD cards are perfectly capable for stills at lower burst rates and 4K 60p video. Whatever you choose, use two identical cards in the same speed class to avoid the dual-slot bottleneck trap, and format every card in-camera before each shoot.
Have a question about a specific card or workflow I did not cover? Drop a comment below and I will do my best to help you pick the right card for your A1 II setup.