M.2 and a question

[69681]

Why does an M.2 B+M key cost less than a M.2 M key?

 

[Peter Martin]

the what? -- capt. murphy -- SeaLab 2021

http://www.atpinc.com/Memory-insider/what-is-m.2-M-B-BM-key-socket-3

so, i guess it shouldn't but maybe you have a good sale OR, there are crappier electronics on the B+M drive vs the M

M

59-66

PCIe x4 / SATA

M has the best stats/performance Gen3 PCIex4

updated. from document. the B+M is SATA interface, the M is only NVMe PCIe type, much higher performance than SATA. So, that is why M costs more, MORE Perf 🙂

 

[Barty1884]

Because they're mostly SATA drives, or x2 PCIe.

NVMe (PCIe x4) exclusively use "M" keys. Faster speeds etc, command higher prices.

 

[Peter Martin]

edited

 

[Traditore]

because they are slower.

B keyed M.2's can handle PCIe x2 speeds

M keyed M.2's can handle PCIe x4 speeds

B+M operate at B speeds