I just bought two new SSDs, the Samsung 850 EVO and HyperX Fury. Testing it in my laptop with SATA III I get the expected transfer rate of 400-500 MB/s.
However, in my SATA II desktop both drives max out at around 210 ! MB/s. From what I read, under SATA II, the drives including overhead should be performing around 285-300 MB/s, so that's 35-40% below what it should, which is a huge loss. Anyone know what could be the reason?
System is Gigabyte GA-P55-UD3R core i3-560,8 Gb RAM, Win 10
UPDATE: just checked with an older SATA II system P35 chipset, Windows 7, and the same SSD is giving much better results (260 write and 230 read)! so is this a Win 10 issue or an AHCI issue perhaps? Weird