PNY XLR8 2GB (2x1GB) Dual Channel Kit DDR2 1066 MHz PC2-8500 SLI-Ready Desktop DIMM Gamer Memory Modules D22GX85XL-5 Runs at 1066 MHz CL5 with 5-5-5-15 timings at 2.2 volts Deliver all the performance your PC has to offer with PNY Memory Custom heat sink designed to provide superior heat extraction for enhanced reliability and endurance under high-stress conditions SLI-Ready with EPP settings for simple setup with SLI motherboards Easy installation, Free 24-hour Technical Support, and Lifetime Warranty!