OCZ 800GB Z-Drive R4 CM Series Full Height Form Factor PCIe Solid State Drive With Maximum Read and Write 2800 MB/s and Maximum 500K IOPS- ZD4CM88-FH-800G Max. Read & Write Up To 2,800 MB/s Max IOPS 500,000 Power Consumption: Idle: 23W Active: 26W Power Requirements: PCI Express 12V & 3.3V Flash Virtualization Layer: OCZ VCA (Virtualized Controller Architecture) 2.0