The TWINX2048-3200PRO is a 2 GByte matched memory pair specifically designed for motherboards using chipsets with dual memory channels. This memory kit consists of two CMX1024-3200PRO memory modules that have been tested together on an 875P or 865PE dual channel DDR motherboard at DDR400 (200 MHz). TwinX memory kits are designed to provide the ultimate in performance and stability in dual channel boards. As part of Corsair's new XMS ProSeries, each module includes the new high-efficiency aluminum XMS heatsink, and 18 activity LED's that show the level of memory activity on each bank.