Hey! This F5 Final really helped me alot. On previous bios versions I got memory errors with memtest (in 10 minutes) and bluescreens with right stock ram settings (667mhz, 1.8V), but now with this new bios I haven't got any BSOD and also memtest run totally without any errors, so I'd say this helped my alot. So like they say on F5 Final description: "Fix some DDR667 compatibility issues", they really fixed that.