Asus Crosshair IV Formula
2600 MHz FSB, Socket AM3, Supported Processor AMD Athlon 64 X2 / AMD Phenom II X6 / AMD Athlon II X4, System Chipset AMD 890FX, Audio Chipset VIA VT2020, Memory Technology DDR3 (16 GB Max Supported RAM), Memory Frequency 1333 / 2000 MHz, 4 Memory Slots