This is a ValueRAMs 128M x 72-bit 1GB (1024MB) DDR333 CL2.5 SDRAM (Synchronous DRAM) ECC memory module. The components on this module include eighteen 64M x 8-bit (16M x 8-bit x 4 Bank ) DDR333 SDRAM in TSOP packages. This 184-pin DIMM uses gold contact fingers and requires +2.5V.