SUPERMICRO AS-2042G-72RF4 2U Rackmount Server Barebone Quad Socket G34 AMD SR5690/SR5670 DDR3 1600/1333/1066 CPU Type: Supports up to 4 16/12/8/4-Core ready AMD Opteron 6000 Series Installed CPU: No CPU Installed Max Processors: 4 South Bridge: AMD SP5100 Memory Slots: 32 x 240Pin Installed Memory Size: No Memory Installed Max Memory Supported: Support up to 1TB Registered ECC or 256GB Unbuffered ECC/non-ECC DDR3 1600/1333/1066 SDRAM in 32 DIMMs Channel Supported: Quad Channel