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slow disk bandwidth with GA-Z77X-UD3H, Win 7 Ent
hi,
in a nutshell, i've got some fast drives that should be transferring data much faster than they actually are [30mbytes/sec], and i can't figure out why they're not performing right.
i've got 2 disk drives i'm going to be copying data back and forth from -- a seagate st3320620as 320gb sata drive rated at 72mbytes/sec sustained max throughput, and a western digital wd10ezrx sata3 rated at 150mbytes/sec sustained max throughput.
the mobo i'm using is a gigabyte GA-Z77X-UD3H, which has 2 x sata3 ports rated at 6gb/sec. i've connected my drives to these two sata3 ports.
i've set the bios to use ahci, and the bios system devices screen shows both disks recognized on the appropriate sata3 ports as distinct disks. my bios is flashed to the latest non-beta version [f18].
the drivers originally on the machine were from microsoft, device mgr tells me they're version 6.1.7600.16385 dated 6/21/2006, using atapi. i updated to use intel's rapid storage technology drivers [v.12.8.0.1016, 8/2013] -- still no joy.
anybody have any ideas on how i can troubleshoot this and get the speed i'm supposed to get?
thanks.
Last edited by david0077; 06 Nov 2014 at 17:25. Reason: formatting