Corsair Vengeance 8 GB (2 x 4 GB) DDR3 1600 MHz PC3 12800 240-Pin DDR3 Dual Channel Memory Kit (CMZ8
I used this RAM on a build with an AsRock p67p4 Extreme and an ASUS Sabertooth P67 motherboard. On both builds, the RAM worked very well and ran with stability at 1866Mhz with the stock 1.5v. I did not test any higher frequency as the performance gains .....