One Windows is simply not enough! Call US +1 877 734 6106 to find out Call UK 0800 027 2002 to find out 1GB RAM - DRR1 ECC-Registered   Specification KVR400S4R3A/1G 1GB 128M x 72-Bit DDR400 CL3 Registered 184-Pin ECC DIMM DESCRIPTION: This document describes ValueRAM's 128M x 72-bit 1GB (1024MB) DDR400 CL3 SDRAM (Synchronous DRAM) Registered ECC memory module. The components on this module include eighteen 128M x 4-bit (32M x 4-Bit x 4 Bank) DDR400 SDRAM in FBGA packages. This 184-pin DIMM uses gold contact fingers and requires +2.6V. The electrical and mechanical specifications are as follows: FEATURES: Clock Cycle Time (tCK) 5ns (min.) / 10ns (max.) Row Cycle Time (tRC) 55ns (min.) Refresh Row Cycle Time (tRFC) 70ns (min.) Row Active Time (tRAS) 40ns (min.) / 70,000ns (max.) Single Power Supply of +2.6V (+/- .1V) Power 9.672 W (operating) UL Rating 94 V - 0