Asus P5Q Pro Turbo. It will also give you some room for OC'ing. With P45 Express Chipset and support to 4x DIMM DDR2 1000+
I'm choosing this mobo to replace my old G31 mobo and planning for OC'ing RAM and CPU.
I'll order one of this from local online shop and I'll tell you how great this mobo!!!
And forget SATA 3 unless you're using SSD.
The traditional HDD speed depends on it's rotational speed, and how much cache on it. The theortical speed of SATA 3 is 6.0Gbps, but the facts it never exeeds 1Gbps unless you put your SSD on it.
Edited due to the less informaton