Key takeaways
- Officially licensed for PS5 with a heatsink already installed, so it’s genuinely plug-and-play
- Real-world load times essentially match the console’s internal SSD
- Runs cool during heavy download and install sessions
- Clean, low-profile build that clears the bay cover with no fuss
What's inside
The WD_BLACK SN850P is Western Digital’s officially licensed 1TB storage expansion built specifically for the PS5, pairing a Gen4 PCIe drive with a pre-installed heatsink so it drops straight into the console’s expansion slot without any extra thermal parts to buy. Rated at up to 7,300MB/s reads, it targets the exact ceiling Sony recommends for compatible SSDs.
It’s aimed squarely at PS5 owners who have run out of internal space and want the simplest possible upgrade: no cooler shopping, no compatibility guesswork, just unscrew the cover and seat the drive. PC users can technically use it too, but the heatsink profile and the licensing premium make it a console-first pick.
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Watch: WD_BLACK SN850P Review — Video Review
Design & Build
The SN850P arrives as a bare M.2 2280 module with a low, matte-black finned heatsink already bonded on top, and that height clears the PS5 bay cover with room to spare. The finning is modest compared with aftermarket tower coolers, but it’s tuned for the airflow inside the console rather than raw surface area. Fit and finish are clean, the label carries the licensing badge, and there’s nothing to assemble, which is the whole point of paying for the “P” variant over a generic SN850 plus a third-party heatsink.
Performance
In practice the drive behaves exactly as a good Gen4 PS5 expansion should. Games installed to it load within a hair of titles sitting on the built-in SSD, and the console’s own storage benchmark reports read speeds comfortably above Sony’s 5,500MB/s floor. Large installs copy over quickly, and thermals stay in check during back-to-back downloads thanks to the bundled heatsink.
Where the ceiling shows is sustained sequential writes on a nearly full drive, where speeds taper once the SLC cache is exhausted, and the 1TB capacity fills faster than you’d expect with modern 100GB+ installs. Neither issue is unique to this drive, but they’re worth knowing before you assume a single 1TB stick ends your storage worries for good.
Pros & Cons
- Officially licensed for PS5 with a heatsink already installed, so it’s genuinely plug-and-play
- Real-world load times essentially match the console’s internal SSD
- Runs cool during heavy download and install sessions
- Clean, low-profile build that clears the bay cover with no fuss
- Carries a licensing premium over a comparable unlicensed SN850 plus separate heatsink
- 1TB fills quickly given today’s install sizes; heavy libraries will want 2TB
- Sustained write speed dips once the cache is used up on a full drive
Alternatives to Consider
If value matters more than the licensing badge, the Western Digital 1TB SN850 for PS5 with Heatsink delivers nearly identical real-world results for less, and the Western Digital 2TB SN850 for PS5 doubles the capacity for buyers with sprawling libraries. PC-focused upgraders chasing the newest silicon should instead look at the WD_Black SN8100 2TB, a PCIe 5.0 drive rated up to 14,900MB/s that far outpaces anything the PS5 slot can use but shines in a desktop.
Frequently Asked Questions
Does the SN850P need a separate heatsink for the PS5?
No. The heatsink ships pre-installed and is sized for the console’s expansion bay, so there’s nothing extra to buy or attach.
Is it noticeably faster than the PS5’s internal storage?
Not noticeably. Load times land within a fraction of a second of the built-in SSD; the benefit is added capacity, not a speed jump.
Will it work in a PC?
Yes, it’s a standard Gen4 M.2 drive, but the licensing premium and console-tuned heatsink make it a better value on PS5 than in a desktop.
Is 1TB enough, or should I get the 2TB?
1TB holds a handful of large modern games. If you keep many big titles installed at once, the 2TB version is the safer long-term choice.
Verdict
The WD_BLACK SN850P earns its place as the lowest-friction PS5 storage upgrade: licensed, cooled, and fast enough that you’ll forget which games live on it. You pay a small premium for that simplicity and the 1TB capacity is tight for heavy libraries, but for most players who just want more space without research, it’s an easy recommendation.
