One Windows is simply not enough! Call US +1 877 734 6106 to find out Call UK 0800 027 2002 to find out 2GB RAM - DRR1 ECC-Registered   Specification KVR333D4R25/2G 2GB 256M x 72-Bit DDR333 CL2.5 Registered 184-Pin ECC DIMM DESCRIPTION: This document describes ValueRAM's 256M x 72-bit 2GB (2048MB) DDR333 CL2.5 SDRAM (Synchronous DRAM) "dual rank" Registered ECC memory module. The components on this module include thirty-six 128M x 4-bit (32M x 4-Bit x 4 bank) DDR333 SDRAM in FBGA packages. This 184-pin DIMM uses gold contact fingers and requires +2.5V. The electrical and mechanical specifications are as follows: FEATURES: Clock Cycle Time (tCK) 6ns (min.) / 12ns (max.) Row Cycle Time (tRC) 60ns (min.) Refresh Row Cycle Time (tRFC) 72ns (min.) Row Active Time (tRAS) 42ns (min.) / 70,000ns (max.) Single Power Supply of +2.5V (+/- .2V) Power 10.225 W (operating) UL Rating 94 V - 0