Motherboard Asus Crosshair IV Extreme:
Phenom II/Athlon II/ Sempron 100 Series Processors(AM3 CPU) | 890FX SB850 | 4DDR3(Dual Channel) DDR3 2000(O.C.)/1800(O.C.)/1600(O.C.)/1333/1066
Motherboard Asus Crosshair IV Formula :
Phenom II/Athlon II/ Sempron 100 Series Processors(AM3 CPU) | 890FX SB850 | 4DDR3(Dual Channel) DDR3 | CrossLinx 3 + CrossFireX | 8-CH(HD) | Gb Intel | 0 PCIe x4 Slots, 0 PCIe x1 Slots, 1 PCI Slots | 2 USB 3.0, 13 USB 2.02000(O.C.)/1800(O.C.)/1600(O.C.)/1333/1066 | CrossFire @dual x16 or triple x16/x8/x8 | SupremeFX X-Fi onboard | Gb Marvell PCIe | 0 PCIe x4 Slots, 2 PCIe x1 Slots, 2 PCI Slots | 12 USB 3.0, 0 USB 2.0
Motherboard Asus P5KPL-AM SE :
Pentium 4/Celeron/Pentium D/Core 2 Duo/Core 2 EE/Core 2 Quad | G31 ICH7 | 2DDR2(Dual Channel);DDR2 1066(O.C.)/800/667 | 6-CH(HD) | 10/100 Realtek | 0 PCIe x4 Slots, 1 PCIe x1 Slots, 1 PCI Slots | 0 USB 3.0, 8 USB 2.0
Motherboard Asus P6X58D Premium :
Core i7 Processor Extreme Edition/Core i7 Processor | X58 ICH10R | 6DDR3(Triple Channel) DDR3 2000(O.C.)/1800(O.C.)/1600(O.C.)/1333/1066 | 3-Way SLI @x16/x8/x8 + CrossFireX @dual x16 | 8-CH(HD) | 2 x Gb Marvell PCIe | 1 PCIe x1 Slots, 2 PCI Slots | 2 USB 3.0, 8 USB 2.0