Which is better for a PS5?

The SN850P is the safer pick because it is Sony-licensed and ships with a heatsink that fits the console. The SN850X works in a PS5 too, but you need to add a heatsink on the 1TB model.

Is the SN850X worth the extra over the SN850P?

Only if you want more speed or PC features. The SN850X is rated at 7300MB/s read versus 7000MB/s for the SN850P, and adds Game Mode 2.0 and DirectStorage support. For pure PS5 storage, the SN850P's included heatsink and license matter more.

Do I need a heatsink for the SN850X in a PS5?

Yes. Sony requires a heatsink in the PS5 M.2 slot, and the SN850X 1TB ships without one. Buy the heatsink version or add a compatible heatsink.

Which one lasts longer?

Both are M.2 2280 NVMe drives from Western Digital with similar builds. The SN850X lists TLC memory and a 128MB cache; endurance figures were not given for either, so compare the published TBW ratings before buying.

Can I use the SN850P in a PC?

It is a standard M.2 2280 PCIe Gen 4 drive, so it fits most modern PCs. You lose the PS5-specific license benefit, and the SN850X offers more PC features for the same kind of money.

Which has more capacity choices?

The SN850X, which comes in 1TB, 2TB and 4TB. The SN850P is listed only in 1TB.

WD_Black SN850P 1TB PS5 SSD vs WD_BLACK SN850X NVMe SSD 1TB

Buy the SN850P if the drive is going into a PS5: it is Sony-licensed, comes with a heatsink that fits the console's M.2 slot, and installs without extra parts. Buy the SN850X if you want the fastest drive for a PC or a PS5 and don't mind adding your own heatsink. The SN850X 1TB is $258.95 at Amazon as of November 6, 2026; no price was given for the SN850P, so check its current listing before deciding.

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