I did a test on my Samsung 840 Pro 128gb SSD and a Seagate Barracuda ST31000524AS 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s. I enabled AHCI and they are both plugged into the SATA 3 port on my MSI P67A-G45 B3 motherboard. My BIOS drivers are up to date.
SSD
HDD
I didnt do Access Time or 4K read/write because it was taking way too long.
SSD
HDD
I didnt do Access Time or 4K read/write because it was taking way too long.