Sony CEA-G640T 640GB
(CEA-G640T)CFexpress Type ACFexpressRead 800 MB/sWrite 700 MB/s640GBNVMe
HIGH
SSD for Sony Sony A7S III (ILCE-7SM3)
2020–2025
Form Factor: CFexpress Type AInterface: CFexpressMax Capacity: 1TB
Upgradeable
Quick answer
The Sony Sony A7S III (ILCE-7SM3) is matched with Sony CEA-G640T 640GB, Sony SF-E 256GB UHS-II, ProGrade Digital Gold 160GB, Sony SF-G Tough 64GB, Sony CEA-G80T 80GB, Sony CEA-G160T 160GB, Angelbird AV PRO CFexpress Type A 1TB. Compatible storage type: CFexpress Type A CFexpress. Capacity guidance: up to 1TB. Before buying, confirm your exact model number, storage interface, physical size, and connector/keying. Listings are from eBay and Amazon and may change.
Compatible SSDs for the Sony Sony A7S III
Sony SF-E 256GB UHS-II
(SF-E256)SD UHS-IIUHS-IIRead 270 MB/sWrite 120 MB/s260GBHIGHProGrade Digital Gold 160GB
(PGCA160GCPNA)CFexpress Type ACFexpressRead 900 MB/sWrite 800 MB/s160GBNVMeHIGHSony SF-G Tough 64GB
(SF-G64T)SD UHS-IIUHS-IIRead 300 MB/sWrite 299 MB/s60GBHIGHSony CEA-G80T 80GB
(CEA-G80T)CFexpress Type ACFexpressRead 800 MB/sWrite 700 MB/s80GBNVMeHIGHSony CEA-G160T 160GB
(CEA-G160T)CFexpress Type ACFexpressRead 800 MB/sWrite 700 MB/s160GBNVMeHIGHAngelbird AV PRO CFexpress Type A 1TB
(AVP1T0CFA)CFexpress Type ACFexpressRead 820 MB/sWrite 730 MB/s1TBNVMeHIGH
Listings and prices are pulled from eBay and Amazon and may change. Always verify compatibility — confirm your exact model number, storage interface, physical size, and connector/keying — before purchase. Last checked July 24, 2026.
SSD Upgrade Guide for the Sony Sony A7S III
This device uses a CFexpress Type A drive with a CFexpress interface. Maximum supported capacity is 1TB.
CFexpress and CompactFlash cards function as the "storage drive" in compatible cameras and embedded systems.
Always power off your device and disconnect power before replacing storage.
Frequently Asked Questions
What SSD fits the Sony Sony A7S III (ILCE-7SM3)?
The Sony Sony A7S III (ILCE-7SM3) is matched with Sony CEA-G640T 640GB, Sony SF-E 256GB UHS-II, ProGrade Digital Gold 160GB, Sony SF-G Tough 64GB, Sony CEA-G80T 80GB, Sony CEA-G160T 160GB, Angelbird AV PRO CFexpress Type A 1TB. It supports CFexpress Type A CFexpress. This device supports up to 1TB based on our records. Before buying, confirm your exact model number, storage interface, physical size, and connector/keying.
How do I verify SSD compatibility?
Verify your full model number against the device page, then confirm the physical form factor (CFexpress Type A), interface (CFexpress), and M.2 keying if applicable. Compare against your existing drive or manufacturer specs before purchase.
Can I use NVMe if my device originally had SATA?
Interface support varies by exact model. Our records indicate CFexpress Type A CFexpress. Confirm whether your slot supports SATA, NVMe, or both before choosing a drive.
Does physical size and keying matter?
Yes. M.2 drives vary by length (e.g. 2280) and keying (B-key, M-key, B+M). 2.5-inch and other form factors must match the bay or adapter your device accepts. The Sony Sony A7S III (ILCE-7SM3) is documented as CFexpress Type A CFexpress — a drive with the wrong size or key will not fit or work.
Are these listings live and current?
Listings and prices are pulled from eBay and Amazon and may change at any time. We refresh marketplace data regularly, but always verify the listing title, condition, and seller before purchase.