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Sony FX3 SD card requirements

Best SD Card for Sony FX3

Expert recommendations based on Sony FX3 specifications

Recommended Spec

Dual slots: CFexpress Type A or SD UHS-II (V60 (SD), V90 recommended for 4K 120fps or faster)

Both FX3 slots take CFexpress Type A or SD UHS-II. V60 SD cards cover standard 4K; 4K/120 in XAVC S-I needs V90 or CFexpress Type A.

Official Sony FX3 SD Card Requirements

  • Format: Dual slots: CFexpress Type A or SD UHS-II
  • Minimum Speed: V60 (SD), V90 recommended for 4K 120fps (60-90 MB/s (SD), 800+ MB/s (CFexpress) write)
  • Maximum Capacity: No official limit
Why these requirements? Sony's full-frame cinema camera, known for its outstanding 4K 120fps capability. V90 SD cards are essential for reliably recording high frame rate footage and using ALL-I codecs. While CFexpress Type A cards provide the absolute maximum performance, they come at a premium cost.

Detailed Specifications

Type
Dual slots: CFexpress Type A or SD UHS-II
Min Speed Class
V60 (SD), V90 recommended for 4K 120fps
Write Speed
60-90 MB/s (SD), 800+ MB/s (CFexpress)
Recommended Size
128GB, 256GB, 512GB
Max Capacity
No official limit

Top SD Card Recommendations

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SD Card Verified Speed Class Write Speed Pros Price
Sony TOUGH G-Series SD V90 SD card - 100USD
Sony TOUGH G-Series SD
 Full Review 		V90 Up to 299 MB/s
  • One-piece molded body rated for drops
  • water and bending. Writes up to 299 MB/s.
 $$ Check Price
Lexar Professional 1667x SD V60 SD card - 45USD
Lexar Professional 1667x SD
 Full Review 		V60 Up to 120 MB/s
  • Low-cost way into UHS-II SD.
 $ Check Price
SanDisk Extreme PRO CFexpress Type A VPG-400 SD card - 100USD
SanDisk Extreme PRO CFexpress Type A
 Full Review 		VPG-400 Up to 700 MB/s
  • Handles every recording mode on Sony bodies with Type A slots
  • including 4K120 All-Intra.
 $$ Check Price

Compare These Cards

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See how the recommended cards for Sony FX3 stack up side by side, or swap in any other card.

professional
Sony TOUGH G-Series SD

Sony TOUGH G-Series SD

 $$ · Premium
  • UHS RatingUHS-II
  • Speed ClassV90
  • App PerformanceN/A
  • Read SpeedUp to 300 MB/s
  • Write SpeedUp to 299 MB/s
  • EnduranceStandard
Available Capacities32GB, 64GB, 128GB

Pros

  • One-piece molded body rated for drops
  • water and bending. Writes up to 299 MB/s.

Cons

  • Expensive.
View on Amazon
recommended
Lexar Professional 1667x SD

Lexar Professional 1667x SD

 $ · Mid-Range
  • UHS RatingUHS-II
  • Speed ClassV60
  • App PerformanceN/A
  • Read SpeedUp to 250 MB/s
  • Write SpeedUp to 120 MB/s
  • EnduranceStandard
Available Capacities64GB, 128GB, 256GB

Pros

  • Low-cost way into UHS-II SD.

Cons

  • V60
  • not V90. Too slow for All-Intra 4K.
View on Amazon
professional
SanDisk Extreme PRO CFexpress Type A

SanDisk Extreme PRO CFexpress Type A

 $$ · Premium
  • UHS RatingNone
  • Speed ClassVPG-400
  • App PerformanceN/A
  • Read SpeedUp to 800 MB/s
  • Write SpeedUp to 700 MB/s
  • EnduranceStandard
Available Capacities80GB, 160GB, 320GB

Pros

  • Handles every recording mode on Sony bodies with Type A slots
  • including 4K120 All-Intra.

Cons

  • Expensive per GB.
View on Amazon

Sony TOUGH G-Series SD

The Sony TOUGH G-Series is a V90 UHS-II SD card that reads up to 300 MB/s and writes up to 299 MB/s. Its one-piece molded body has no ribs or write-protect switch to break, and it is rated for drops, water and bending.

Target User: High-end camera users and professionals in rugged environments
Best For: Mirrorless Cameras, DSLR Cameras, Action Cameras

For users looking for a more budget-friendly option, consider the Lexar Professional SD card or the Delkin Devices Power SD card, which offer similar performance but at a lower price point.

Lexar Professional 1667x SD

The Lexar Professional 1667x Silver is a V60 UHS-II SD card that reads up to 250 MB/s and writes up to 120 MB/s. It covers most 4K modes and clears bursts faster than UHS-I, but All-Intra video needs V90.

Target User: Content creators with a tight budget, amateur videographers
Best For: Action Cameras, Smartphones & Tablets, Mirrorless Cameras, DSLR Cameras

For more demanding professionals, consider upgrading to a faster UHS-II SD card. In comparison, other popular options like SanDisk Extreme may offer slight speed improvements but at a higher cost. If budget is not a concern, the faster speed may be worth the investment, but for those on a tighter budget, Lexar Professional 1667x Silver SD provides a cost-effective solution.

SanDisk Extreme PRO CFexpress Type A

The SanDisk Extreme PRO CFexpress Type A reads up to 800 MB/s and writes up to 700 MB/s. It fits the combo slots in Sony bodies such as the A7 IV, A7S III, FX3, FX30 and A1, and handles their All-Intra and 4K120 modes.

Target User: Professional videographers and photographers, content creators
Best For: CFexpress Type A Cameras, Mirrorless Cameras, 8K Cameras

Choose SanDisk Extreme PRO CFexpress Type A over competing cards for its superior write speeds and rugged design, making it the best choice for those requiring a balance of performance and durability.

Frequently Asked Questions

What SD Card Do I Need for Sony FX3?
The Sony FX3 takes a Dual slots: CFexpress Type A or SD UHS-II card rated V60 (SD), V90 recommended for 4K 120fps or faster. 128GB or 256GB or 512GB covers most owners, and the maximum is No official limit. Buy SanDisk, Lexar, Samsung or Kingston from a reputable seller: counterfeit cards are the most common cause of lost files.
Do the Sony FX3 and FX30 use the same cards?
Yes. Both have two slots that take CFexpress Type A or SD UHS-II, with V90 needed for All-Intra.
Do I need a V90 SD card for the FX3, or is V60 enough?
V60 covers standard 4K. 4K/120 and XAVC S-I All-Intra need V90 or CFexpress Type A.
Is V60 required for Sony FX3?
Yes. V60 guarantees 60-90 MB/s (SD), 800+ MB/s (CFexpress) of sustained write, which keeps the Sony FX3 free of dropped frames, clips that stop early, or corrupted files. Faster cards work too.
What size SD card should I get for Sony FX3?
128GB covers light use; 512GB suits heavy use. Maximum capacity: No official limit.
Can I use older or slower cards with Sony FX3?
Not below V60 (SD), V90 recommended for 4K 120fps. Slower cards cause dropped frames, clips that stop early, or corrupted files. Check the card label for the V60 (SD), V90 recommended for 4K 120fps mark.
Do I need a UHS-II card for Sony FX3?
No, but it helps. The Sony FX3 has a UHS-II slot, so UHS-II cards write and offload faster. UHS-I cards work at UHS-I speed.
Should I use more than one card with Sony FX3?
For long shoots, yes. Two mid-size cards cost about the same as one large card, and a failure then loses half your files instead of all of them.
Does the brand matter for Sony FX3?
Yes. SanDisk, Lexar, Samsung and Kingston cards meet their rated speeds. Buy from the brand's store or a major retailer: counterfeit cards sold under those names are common on marketplaces.
What happens if I use the wrong card with Sony FX3?
A card slower than V60 (SD), V90 recommended for 4K 120fps causes dropped frames, clips that stop early, or corrupted files. A card over the maximum capacity or in the wrong format may not be recognized.
How long will an SD card last in Sony FX3?
Several years in normal use. Cards usually fail from wear or counterfeit flash, not age. Replace yours at the first write error, corrupted file or "card not recognized" message.

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