The TWINX2048-3500LLPRO is a 2GByte matched memory pair specifically designed for motherboards using chipsets with dual memory channels. This memory kit consists of two CMX1024-3500LLPRO memory modules that have been tested together on a current production AMD motherboard at DDR437 (218 MHz) and extremely Low Latency of 2-3-2-6 1T. These TwinX memory kits are designed to provide the ultimate in performance and stability in dual channel boards. As part of Corsair's XMS ProSeries, each module includes the high-efficiency aluminum XMS heatsink, and 18 activity LED's that show the level of memory activity on each bank.