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Mark Cerny approves of this drive for PS5 SSD storage expansion

PlayStation 5 architect Mark Cerny gives his stamp of approval on this WD SSD that's capable of hitting an insane 7GB/sec.

Published Sun, Aug 1 2021 12:43 AM CDT   |   Updated Mon, Aug 30 2021 10:33 PM CDT

Mark Cerny says he plans to use a WD_Black SN850 SSD in his PlayStation 5 to expand storage.

Mark Cerny approves of this drive for PS5 SSD storage expansion 212 | TweakTown.com

The PS5's SSD expansion bay will soon be unlocked to finally let gamers add more high-end storage to their consoles. After a new firmware update drops, PS5 owners can slot in a PCIe 4.0 NVMe M.2 SSD into their console that's up to 4TB big. But what drives do you buy? Sony has yet to put together an official list of compatible SSDs just yet, but they have given some guidelines: It needs to be at least 5GB/sec, it has to be a PCIe 4.0 NVMe M.2 drive, and it needs to have a heat sink. These don't come cheap.

Case in point: Mark Cerny is inadvertently recommending the WD_Black SN850 2TB SSD, which comes with a heat sink and can hit incredible speeds of up to 7GB/sec. It's also pretty expensive at $500, which is literally the same price as a disc-based PlayStation 5.

Seagate was the first to announce a PlayStation 5-compatible SSD with the Firecuda 530, which can hit 7.3G/sec speeds and is priced at $275 for 1TB.

"We have done some testing with Sony on the PlayStation 5 and today we can confirm that the FireCuda 530 with the heat sink has met all the PS5 requirements," Seagate ANZ manager Jeff Park told Finder.

Sony should have a list prepared once the firmware goes live. Right now the expansion bay-unlocked firmware update is only in beta phases and isn't available to the public yet.

Sony PlayStation 5 SSD requirements

  • Interface: PCIe Gen4 x4 M.2 NVMe SSD
  • Capacity: 250GB - 4TB
  • Cooling structure: Using an M.2 SSD with your PlayStation 5 console requires effective heat dissipation with a cooling structure, such as a heat sink. You can attach one to your M.2 SSD yourself, either in a single-sided format, or double-sided format. There are also M.2 SSDs that have cooling structures (such as heat sinks) built in.
  • Sequential read speed: 5,500MB/s or faster is recommended
  • Module width: 22mm width (25mm width is not supported)
  • Form Factor: M.2 type 2230, 2242, 2260, 2280 and 22110. These numbers can be found on retail listings for M.2 SSD devices. The first two digits refer to the width, the remaining digits to the length.
  • Socket type: Socket 3 (Key M)

Total size including cooling structure:

  • In millimeters: smaller than 110mm (L) x 25mm (W) x 11.25mm (H).
  • In inches: smaller than 4.33in (L) x 0.984 in (W) x 0.442in (H).

See below for full requirements.


  • The following M.2 SSD lengths are compatible with PlayStation 5 consoles:
  • 30mm, 42mm, 60mm, 80mm, 110mm (corresponding to the form factor type, per above).


  • A 22mm-wide M.2 SSD module is required.
  • The total structure (including an added cooling structure) cannot exceed 25mm (0.984in).


  • The total height of the M.2 SSD and its cooling structure (such as a heat sink) - whether built-in or separate - must be less than 11.25mm (0.442in).

The height must also be in the right place, in relation to the M.2 SSD's circuit board:

  • The size below the board must be less than 2.45mm (0.096in).
  • The total size above the board must be less than 8mm (0.314in).
NEWS SOURCE:twitter.com

Derek joined the TweakTown team in 2015 and has since reviewed and played 1000s of hours of new games. Derek is absorbed with the intersection of technology and gaming, and is always looking forward to new advancements. With over six years in games journalism under his belt, Derek aims to further engage the gaming sector while taking a peek under the tech that powers it. He hopes to one day explore the stars in No Man's Sky with the magic of VR.

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