Key takeaways
- Officially licensed for PS5 with a pre-fitted, correctly sized heatsink
- Genuinely simple, few-minutes installation
- Fast Gen4 speeds that exceed PS5 requirements
- Reliable WD_BLACK controller and firmware
What's inside
The WD_BLACK 1TB SN850P is an officially licensed PS5 storage expansion drive, a PCIe Gen4 M.2 2280 NVMe SSD that ships with a heatsink already fitted and is rated for reads up to 7,300 MB/s. Being licensed by Sony, it is designed to drop straight into the PS5’s expansion slot with no guesswork about compatibility or cooling.
It is aimed squarely at PS5 owners who have run out of internal space and want the simplest possible upgrade, as well as anyone who prefers a validated, plug-and-play drive over sourcing a bare SSD and a separate heatsink. PC users can use it too, but its real selling point is that turnkey console fit.
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Watch: WD_BLACK SN850P Review — Video Review
Design & Build
The SN850P arrives with a low-profile aluminium heatsink pre-attached and sized to fit under the PS5’s expansion cover without fouling anything. The M.2 2280 board uses Western Digital’s own controller and NAND, and the whole package feels purpose-built rather than adapted. Because the heatsink is included and correctly dimensioned, installation is genuinely a couple of minutes of work with a single screw. The trade-off is that the fixed heatsink makes it less suited to slim laptops, but for its intended console role the design is spot on.
Performance
Inside a PS5 the SN850P behaves exactly as it should: games install and load quickly, and the drive comfortably exceeds Sony’s minimum speed requirements, so titles moved to it play identically to those on the internal SSD. The rated 7,300 MB/s reads and 6,300 MB/s writes are ample for the console’s needs, and the pre-fitted heatsink keeps temperatures in check during extended sessions.
On PC the drive is a solid Gen4 performer rather than a record-setter, delivering quick game loads and responsive general use. It will not match the newest PCIe 5.0 drives on raw sequential throughput, but for gaming workloads the difference is largely academic. The main reason to choose it over a cheaper bare SSD is the licensing and the bundled, correctly sized cooling.
Pros & Cons
- Officially licensed for PS5 with a pre-fitted, correctly sized heatsink
- Genuinely simple, few-minutes installation
- Fast Gen4 speeds that exceed PS5 requirements
- Reliable WD_BLACK controller and firmware
- Fixed heatsink makes it unsuitable for slim laptops
- Gen4 speeds trail newer PCIe 5.0 drives on PC
- Licensing premium over comparable bare SSDs
Alternatives to Consider
If you want more room, the Western Digital 2TB SN850 for PS5 offers double the capacity with the same heatsink-equipped, console-ready approach. PC-focused buyers who do not need the fitted heatsink could save with the WD_Black SN7100 1TB, a fast Gen4 drive for laptops and handhelds, while those chasing peak PC throughput should look at the WD_Black SN8100 2TB, a PCIe 5.0 drive rated up to 14,900 MB/s.
Frequently Asked Questions
Do I need to buy a separate heatsink for the SN850P?
No. The SN850P comes with a heatsink already installed and correctly sized for the PS5 expansion bay, which is a large part of its appeal.
Is it noticeably slower than the PS5’s internal SSD?
No. It exceeds Sony’s speed requirements, so games run and load the same whether they sit on the internal drive or the SN850P.
Can I use the SN850P in a PC or laptop?
Yes in a desktop with an M.2 slot that has clearance for the heatsink, but the fixed heatsink usually makes it a poor fit for slim laptops.
How hard is installation in the PS5?
It is straightforward: remove the expansion cover, seat the drive in the M.2 2280 slot, secure the single screw and replace the cover. The console handles the rest.
Verdict
The WD_BLACK 1TB SN850P is the fuss-free answer to a full PS5. The Sony licensing and pre-fitted heatsink remove every compatibility and cooling worry, and its Gen4 speed is more than the console can even use. It commands a small premium over a bare drive and is not the fastest option for PC power users, but as a drop-in PS5 upgrade in 2026 it is hard to beat for peace of mind.
