Greetings,
I own a Fujitsu Q558 mini PC and recently installed a new SSD into the M.2 slot, specifically a WD Black SN750 SE 500GB PCI Express 4.0 x4 M.2 2280. I did the same test with a Samsung 970 EVO Plus 500GB PCI Express 3.0 x4 M.2 2280 (with a fresh Windows install) and got the same results.
However, I've noticed that the SSD's performance is significantly slower than expected, operating at a speed of 5 GT/s. Surprisingly, it's even slower than my other SSD connected to a SATA III port, which operates at 6 GT/s (it is a WD Red SA500, 1TB, 2.5", SATA III)
According to the motherboard datasheet, the M.2 slot supports PCIe 2.0 with 2 lanes, offering speeds of up to 10Gbit/s [1].
Why is this happening? Thanks!
More details:
- Windows 10
- Intel Core i5-8500T
- Intel H310 Chipset