Two M.2 SSDs with black heatsinks and a small screwdriver next to a white games console

Consoles & accessories

Best PS5 SSDs for extra storage (UK): heatsink drives checked against Sony's size limits

Every pick is a Gen4 NVMe drive with a heatsink in the box, and we've lined each one up against Sony's published size limits.

Curated by Updated 3 products compared How we choose

How we chose: we haven’t tested these products ourselves. We compared the manufacturers’ specs and the Amazon UK listings, then picked each one for the job it suits best. More on how we choose

Quick picks

  1. Best overall

    1. Samsung 990 PRO Heatsink

    Best for: Most PS5 owners

    Check price on Amazon (opens in a new tab, affiliate link)
  2. Best big-name alternative

    2. WD_BLACK SN850X Heatsink 1TB

    Best for: Smaller libraries, or if the Samsung sells out

    Check price (opens in a new tab, affiliate link)
  3. Best value with DRAM

    3. Acer Predator GM7000 Heatsink

    Best for: Value buyers who want a DRAM cache

    Check price (opens in a new tab, affiliate link)

A PS5 fills up fast, and the M.2 slot is the only way to add storage you can actually play PS5 games from. Sony is strict about what goes in it: a PCIe Gen4 x4 NVMe drive, 5,500MB/s or faster recommended, and a heatsink or other cooling is a must (Sony’s requirements). So every pick here has a heatsink already fitted, and I’ve checked each maker’s published height against Sony’s limit. (Here’s how we choose products.)

Sony also says it “cannot guarantee that all M.2 SSD devices meeting the described specifications will work”, so treat any “fits” claim, ours included, as “meets the published spec”.

  • Best overall: Samsung 990 PRO with Heatsink (#1)
  • Best big-name alternative: WD_BLACK SN850X with Heatsink 1TB (#2)
  • Best value with DRAM: Acer Predator GM7000 Heatsink (#3)

Honest warning: PS5 SSDs were patchy on Amazon UK when we checked. Several well-known drives were down to their last one, sold from abroad, or shipped by Amazon US, so this is a short list of three, and all three come from third-party sellers (labelled on each card).

Compare all 3 picks

#ProductBest forKey specLink
1 Samsung 990 PRO with Heatsink 2TBBest overall Most PS5 owners Gen4 x4 NVMe · up to 7,450 MB/s read · 8.2 mm with heatsink (Samsung) Check price (opens in a new tab, affiliate link)
2 WD_BLACK SN850X NVMe SSD with Heatsink 1TBBest big-name alternative Smaller libraries, or if the Samsung sells out Gen4 NVMe · up to 7,300 MB/s · heatsink max 8.8 mm (WD datasheet) Check price (opens in a new tab, affiliate link)
3 Acer Predator GM7000 Heatsink 1TBBest value with DRAM Value buyers who want a DRAM cache Gen4 x4 NVMe · up to 7,400 MB/s · 1GB DRAM · 9.5 mm (Predator) Check price (opens in a new tab, affiliate link)
Best overall

1. Samsung 990 PRO with Heatsink 2TB

by Samsung

Who it’s for: Anyone who wants the safe, quick choice: a fast drive from a big brand that names the PS5 on both the listing and Samsung’s own page.

Verdict: Our pick for most people. It’s well above Sony’s recommended speed, it has its own DRAM cache (so Sony’s HMB warning doesn’t apply), and at 8.2 mm with the heatsink it’s one of the slimmest drives here. The RGB lighting is wasted inside a closed console, but it’s harmless.

What we like

  • Up to 7,450 MB/s read (listing and Samsung)
  • LPDDR4 DRAM cache, per Samsung’s datasheet
  • Slim heatsink: 8.2 mm, max 8.88 mm (Samsung)
  • Samsung says it’s compatible with PS5

Worth knowing

  • RGB lighting you’ll never see in a PS5
  • Sold by a third party (DIGITAL-TECH STORE), not Amazon, when we checked, with 8 left
Key specs
Interface
PCIe Gen 4.0 x4, NVMe 2.0
Read speed
Up to 7,450 MB/s
Height with heatsink
8.2 mm (max 8.88 mm per datasheet)
DRAM cache
Yes, 2GB LPDDR4 on 2TB (Samsung)
Warranty
5 years or TBW limit (Samsung)

Source: manufacturer page (checked 12 October 2026).

Best big-name alternative

2. WD_BLACK SN850X NVMe SSD with Heatsink 1TB

by WD_BLACK

Who it’s for: Someone who only needs room for a handful of extra big games.

Verdict: A long-running Gen4 favourite. The Amazon listing doesn’t mention the PS5, but WD’s own datasheet lists PlayStation 5 compatibility for the heatsink model only, and the heatsink is under 9 mm tall. 1TB is plenty if you keep a few big games installed. (The 2TB version had only one left from a third-party seller when we checked, so we haven’t linked it.)

What we like

  • Up to 7,300 MB/s read (listing)
  • WD lists PS5 support for the heatsink model

Worth knowing

  • 1TB fills up fast with big games
  • Listing doesn’t name the PS5
  • Sold by a third party (Nexa Sales) when we checked
Key specs
Capacity
1TB
Read speed
Up to 7,300 MB/s
Height with heatsink
Max 8.80 mm (WD)

Source: WD_BLACK SN850X datasheet (checked 12 October 2026).

Best value with DRAM

3. Acer Predator GM7000 Heatsink 1TB

by Acer Predator

Who it’s for: Someone who wants a cheaper brand but doesn’t want a DRAM-less drive.

Verdict: A lesser-known name, but the spec sheet is strong: a 1GB DRAM cache on the 1TB model, up to 7,400 MB/s reads and a 9.5 mm heatsink. The listing mentions PS5 storage expansion. It’s the one to look at if the big names are out of stock.

What we like

  • Independent DRAM cache (Predator spec page)
  • Up to 7,400 MB/s read
  • 5-year / 750 TBW warranty on the 1TB (Predator)

Worth knowing

  • Smaller brand than the rest
  • Sold by BIWIN Tech, not Amazon, with 5 left when we checked (BIWIN makes Predator-branded storage)
Key specs
Interface
PCIe Gen4 x4, NVMe 1.4
Read speed
Up to 7,400 MB/s
Height with heatsink
9.5 mm (Predator)
DRAM cache
1GB (1TB model)

Source: manufacturer page (checked 12 October 2026).

Buying guide

Sony’s PS5 SSD rules vs our picks

Drive Read speed (max) Heatsink fitted Total height (maker) DRAM cache PS5 named by maker Seller (12 Oct)
Samsung 990 PRO HS (#1) 7,450 MB/s Yes 8.2 mm (max 8.88) Yes Yes Third party
WD_BLACK SN850X HS 1TB (#2) 7,300 MB/s Yes max 8.80 mm (±0.20) Not stated Yes (heatsink model) Third party
Acer Predator GM7000 HS (#3) 7,400 MB/s Yes 9.5 mm Yes (1GB) Listing only BIWIN Tech
Sony’s limit 5,500 MB/s+ recommended Required 11.25 mm total (8.0 above / 2.45 below the board) No HMB support – –

Sources: Sony and each maker’s spec page or datasheet, fetched 12 October 2026. The makers only publish total height, not how much sits above and below the board, so we can only compare against Sony’s total. Every drive here is inside 11.25 mm.

Which one should you get?

  • Most people: Samsung 990 PRO with Heatsink (#1). Fast, slim, DRAM cache, PS5 named by Samsung.
  • Samsung out of stock, or 1TB is enough: WD_BLACK SN850X with Heatsink (#2).
  • Value with a DRAM cache: Acer Predator GM7000 (#3).
  • More for PS5 owners: our PS5 headsets under £50. Buying for someone else? See our gifts for PS5 owners.

What we left out and why

  • Kingston FURY Renegade with Heatsink 2TB: a “PS5 Ready” drive (Kingston gives 7,300 MB/s and a 10.5 mm heatsink), but Amazon UK showed no buy box or seller on two checks on 12 October, so we couldn’t confirm who sells it.
  • WD_BLACK SN850X with Heatsink 2TB: only one left, from a third-party seller, when we checked.
  • Crucial T500 with Heatsink: a good PS5 drive on paper (Crucial gives about 9.7 mm tall), but on 12 October it was shipped and sold by Amazon US, so it’s an import.
  • Seagate FireCuda 530R with heatsink: huge endurance, but only one left from a third-party seller, and at 11.10 mm max it’s very close to Sony’s limit.
  • Corsair MP600 PRO LPX: a low-profile drive built for the PS5 slot, but the Amazon UK listing is sold from abroad. When we re-checked on 12 October 2026 it was still an Amazon Global Store listing with import charges added, and the listing says the manufacturer warranty won’t apply, so we haven’t linked it.
  • Crucial P310 PS5 SSD with heatsink: DRAM-less, using Host Memory Buffer (StorageReview), and Sony says the PS5 doesn’t support HMB.
  • Lexar NM790 with heatsink, Lexar EQ790 and fanxiang drives: Lexar’s own product sheet says the NM790 uses HMB 3.0, and the others are HMB or DRAM-less too, so the same Sony warning applies.
  • Samsung 990 EVO Plus and WD_BLACK SN7100: no heatsink in the box. You’d have to add one yourself, which adds a fitting step most people don’t want.
  • Corsair MP600 ELITE: the Amazon UK listing only lists desktop compatibility.
  • Second Samsung 990 PRO listing: the same drive; we’ve linked one.

Prices change all the time. We don’t show prices on What2Buy – use the “Check price on Amazon” buttons for the current price.

FAQ

Does a PS5 SSD need a heatsink?

Yes. Sony says: “Do not use an M.2 SSD without a heat-dissipation mechanism, such as a heat sink or heat transfer sheet.” Every pick here has one fitted, and Sony advises against adding a second heatsink to a drive that already has one.

Which PS5 models take an M.2 SSD?

All of them, using the same spec. Sony’s install guide covers the launch consoles (CFI-1000 model group) and the CFI-2000/7000 group, which includes the slimmer PS5 and the PS5 Pro (CFI-7000 is the Pro, per Sony’s PS5 Pro quick start guide).

1TB or 2TB?

Sony supports 250GB to 8TB. If you keep a lot of big games installed, 2TB saves juggling; if you play a few at a time, 1TB is enough.

Is a Gen5 SSD worth it for a PS5?

Sony’s spec is PCIe Gen4 x4, and it says games won’t necessarily run faster even when the drive is faster than 5,500MB/s. We haven’t seen evidence that a Gen5 drive helps on PS5, so we’ve stuck to Gen4.

Can I play PS5 games from a USB drive instead?

No. Sony says PS5 games can be stored on USB extended storage but must be copied back to the console or an M.2 SSD to play.

What is HMB and why does it matter?

Some cheaper drives have no DRAM cache and borrow memory from the host instead (Host Memory Buffer). Sony says the PS5 doesn’t support HMB and such drives “may experience slower-than-expected performance”, so we left them out.