CPU Type: Six/Four-Core ready AMD Opteron 4100 Series South Bridge: AMD SP5100 Memory Slots: 4 x 240Pin Max Memory Supported: Support up to 64GB Reg. ECC or 16GB DDR3 Unb. ECC/non-ECC DDR3 memory ECC Supported: Yes Registered: Yes Serial ATA: 4 x SATA 300 SATA RAID: RAID 0/1