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Best Sony A9III Memory Cards

You are here: Home / Sony Alpha Mirrorless Cameras / Sony A9III Guides & Resources / Best Sony A9III Memory Cards
Last updated: November 10, 2023 / Published: November 10, 2023 by Timothy Mayo - Leave a Comment

Welcome to my Sony A9III (ILCE-9M3) memory card guide that will help you to find the best cards for your shooting needs and budget for this 120 FPS global shutter speed demon.

Best Sony A9III Memory Cards
Table of Contents[Hide][Show]
  • Which Memory Cards are Compatible?
  • CFexpress 4.0 Compatibility
  • In-Camera Write Speed Comparison

Which Memory Cards are Compatible?

The Sony A9III has two memory card slots and both are compatible with CFexpress 2.0 Type A cards and also UHS-I/II cards.

Sony A9III Memory Card Slots and Compatibility

Here’s a quick speed comparison between the different supported card formats.

  • UHS-I: theoretical maximum transfer speeds of up to 104MB/s
  • UHS-II: theoretical maximum transfer speeds of up to 312MB/s
  • CFexpress 2.0 Type-A: theoretical maximum transfer speeds of up to 1,000MB/s

Please note that CFexpress Type-B cards are not supported by the Alpha 9 Mark III, these are physically much larger than the Type-A cards.

CFexpress 4.0 Compatibility

Unfortunately the Sony A9III does not support the new CFexpress 4.0 standards that should double the theoretical maximum throughput from 1 GB/s (CFexpress 2.0) to 2 GB/s.

However, CFexpress 4.0 cards should still be backwards compatible with the A9III, you just won’t be able to take advantage of them in-camera.

Still, at the time of writing this article there are no CFexpress 4.0 Type-A cards on the market.

In-Camera Write Speed Comparison

Because the Sony A9III has only just launched I’ve not yet had the opportunity to perform my extensive in-camera tests.

Therefore the following results are based on my Sony A1 In-Camera Tests. As soon as I have the A9III in my hands these results will be updated to reflect the actual in-camera speeds of the A9III.

Best CFexpress Type-A Memory Cards

Memory Card* In-Camera Write Speed (A1)* Max Shots/BurstPrice Check
1. Lexar Professional CFexpress Type-A Gold 160GB655 MB/s90B&H Photo | Amazon
2. Delkin Devices BLACK CFexpress Type-A 160GB617 MB/s89B&H Photo | Amazon
3. Delkin Devices POWER CFexpress Type-A 160GB617 MB/s89B&H Photo | Amazon
4. Sony CEA-G CFexpress Type-A 160GB600 MB/s87B&H Photo | Amazon
5. ProGrade Digital CFexpress Type-A Cobalt 160GB600 MB/s87B&H Photo | Amazon
6. Exascend Essential CFexpress Type-A 240GB463 MB/s89B&H Photo | Amazon
7. Pergear Professional CFexpress Type A 260GB450 MB/s87Pergear | Amazon
8. Angelbird AV Pro CFexpress 2.0 Type A 1TBNot yet testedB&H Photo | Amazon
9. Sony CEA-M Series CFexpress Type ANot yet testedB&H Photo | Amazon
* Shooting Uncompressed RAW

Best UHS-II Memory Cards

Memory Card* In-Camera Write Speed (A1)Price Check
1. Kingston Canvas React Plus260 MB/sB&H Photo | Amazon
2. Sony SF-G Tough260 MB/sB&H Photo | Amazon
3. ProGrade V90257 MB/sB&H Photo | Amazon
4. SanDisk Extreme Pro247 MB/sB&H Photo | Amazon
5. Delkin Devices POWER246 MB/sB&H Photo | Amazon
6. Angelbird AV Pro Mk 2 V90246 MB/sB&H Photo | Amazon
7. Sony SF-M Tough 150 MB/sB&H Photo | Amazon
8. Sony SF-M150 MB/sB&H Photo | Amazon
9. Lexar Professional 2000X141 MB/sB&H Photo | Amazon
10. Transcend SD 700S140 MB/sB&H Photo | Amazon
* Shooting Uncompressed RAW

Sony A9III Forum & Facebook Group

If you are looking for further help and advice on the A9III or would simply like to share your photos and videos, then please head over to our friendly Forum. If you prefer Facebook then I also run the new Sony A9III Shooters Group.

Preorder: Sony A9III

At: B&H Photo | Amazon

Sony Alpha Forum

About Timothy Mayo

I started Alpha Shooters back in 2017 to share my own experiences as a photographer shooting with Sony Alpha cameras, lenses and accessories.

I enjoy wildlife photography the most but will happily point my camera at pretty much anything.

As well as this blog you’ll also find a community forum which provides members with a friendly and safe place to share images and ask questions.

You can find out more about my story here or follow me on Instagram if you wish.

I also have a YouTube Channel but haven’t published much content recently due to the demands of my one and three year old boys.

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