M.2 have i made a mistake?

[RoloFanatic]

Hi, I'm giving my pc a serious upgrade this weekend and one of the things I decided to buy was an M.2 SSD to put my OS on, then use the SSD I'm currently using for games and other stuff I use frequently. However I sort of just assumed it would be faster than the SSD i already have.

I have a samsung 850 evo max. read 540 MB/s, max. write 520 MB/s.

The M.2 I've bought is SanDisk 128GB X400 max. read 540 MB/s, max. write 340 MB/s.

Does this mean that the SSD i already have is actually faster than the M.2 I've bought? Or am i missing something?

Thanks

 

[Mr Kagouris]

Yes this is pretty much the case. M.2 is a slot, it doesn't guarantee you speeds. What allows some M.2 SSDs to be extremely fast is that M.2 slots can use the PCIe protocol (so you don't have to take up PCIe slots for what is essentially a PCIe SSD), but they can also use the SATA protocol. What you bought is an M.2 SATA SSD.

 

[Kurz]

NVME m.2 is what you want.