Motherboards that have: DDR3 2x PCIe 16x slots High build quality 4 RAM slots Asus Crosshair Formula V Sabertooth 990FX R2.0 $135 M5A99FX PRO R2.0 M5A78L-M/USB3 M5A97 LE R2.0 $70 new M5A97 R2.0 M5A78L-M LX PLUS M5A97 EVO M5A88-V EVO M4A78T-E $50 used M4A89GTD M4A89TD PRO AMD 890FX eSATA Firewire 400 USB3 $50 used -M4A88T M- 1 PCIe slot CROSSHAIR IV Formula $135 used CROSSHAIR III Formula $80 used