Technical Specifications Based on the label (part number MT9HTF6472Y-40EB2), here are the key technical details for this module: Capacity: 512 MB. Memory Type: DDR2 SDRAM. Speed: 400 MHz (PC2-3200). Form Factor: 240-pin RDIMM (Registered DIMM). Error Correction: ECC (Error Correction Code). Rank: Single Rank (1Rx8). CAS Latency: CL3. Voltage: 1.8V.