Key takeaways
- Officially licensed for PS5 with a pre-fitted heatsink for a genuinely plug-and-play install
- Meets and exceeds Sony’s speed requirements, so games load like they do on the internal drive
- Effective cooling prevents throttling during long play sessions and big downloads
- Backed by a 5-year limited warranty and WD_BLACK’s proven reliability
What's inside
The WD_BLACK SN850P 1TB is Western Digital’s officially licensed storage expansion drive for the PlayStation 5, and this version ships with a pre-fitted heatsink so it is ready to drop straight into the console’s expansion bay. It is a PCIe Gen4 NVMe drive rated up to 7,300 MB/s reads, tuned specifically to meet Sony’s requirements for storing and playing PS5 games directly from the expansion slot.
This drive is for PS5 owners who have run out of internal space and want the least fussy upgrade possible. The official license and bundled heatsink mean no guesswork about compatibility or cooling. PC builders can use it too, but they are paying a small premium for a PlayStation-focused package they may not need; a general-purpose NVMe drive can be cheaper.
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Watch: WD_BLACK SN850P Review — Video Review
Design & Build
The SN850P is a standard M.2 2280 drive topped with a low-profile aluminium heatsink sized to clear the PS5’s expansion bay cover without modification. The heatsink is understated and effective, and because it is already attached there is no thermal-pad fiddling during installation. Build quality is what you expect from the WD_BLACK line, and the drive carries a 5-year limited warranty. On PC it fits standard M.2 slots, though the fixed heatsink can interfere with some motherboards’ own M.2 cooling.
Performance
Inside a PS5 the SN850P does exactly what it should: games install and load as quickly as titles on the console’s internal drive, with no perceptible penalty for running them from the expansion slot. Its Gen4 speeds sit comfortably above Sony’s minimum, and the pre-fitted heatsink keeps it from throttling during long sessions or large downloads. In practical terms, moving a library to it feels seamless.
On PC it performs like a solid, if no longer cutting-edge, Gen4 drive, with strong sequential reads and dependable random performance for gaming and general use. It will not match the newer PCIe 5.0 drives on raw sequential throughput, and for a pure PC build a plain NVMe stick often costs less. Its value proposition is really about the turnkey PS5 experience rather than chart-topping benchmark numbers.
Pros & Cons
- Officially licensed for PS5 with a pre-fitted heatsink for a genuinely plug-and-play install
- Meets and exceeds Sony’s speed requirements, so games load like they do on the internal drive
- Effective cooling prevents throttling during long play sessions and big downloads
- Backed by a 5-year limited warranty and WD_BLACK’s proven reliability
- Carries a small premium over unbranded Gen4 drives for the PlayStation license and heatsink
- PCIe 4.0 speeds trail newer Gen5 drives for PC creator workloads
- The fixed heatsink can clash with some motherboards’ built-in M.2 cooling on PC
Alternatives to Consider
If you want more capacity for a large PS5 library, the 2TB Western Digital SN850 for PS5 offers the same console-ready approach with double the room. Budget-minded PC builders can save with the WD_Black SN7100 1TB, a heatsink-free Gen4 drive, while anyone chasing the fastest PC storage should consider the WD_Black SN8100, a PCIe 5.0 drive that far outpaces this one on sequential speed.
Frequently Asked Questions
Does the SN850P work in a PS5 out of the box?
Yes. It is officially licensed and ships with a compatible heatsink, so it installs directly into the PS5 expansion bay with no extra parts and meets Sony’s performance requirements.
Is it fast enough to play games without slowdown?
It is. Games run from the expansion slot load essentially as fast as those on the internal SSD, and the heatsink keeps speeds stable during long sessions.
Can I use it in a gaming PC?
You can, and it performs like a capable Gen4 drive, but the fixed heatsink may interfere with some motherboard M.2 coolers, and a plain NVMe drive is often cheaper for PC-only use.
How does it compare to a PCIe 5.0 drive?
Gen5 drives are much faster on paper, but the PS5 cannot use that extra speed, so the SN850P’s Gen4 performance is all the console needs. On PC, a Gen5 drive would win large sequential transfers.
Verdict
The WD_BLACK SN850P 1TB is the most hassle-free way to expand a PS5’s storage, combining an official license, a ready-fitted heatsink and speeds that match the console’s internal drive. Its trade-offs are a modest price premium and dated Gen4 numbers that matter only on PC. For PlayStation owners who just want more space that works flawlessly, it is a near-perfect fit; PC-only buyers have cheaper or faster options.
