Kingston HyperX Memory 2GB 1066MHz DDR2 PC2-8500 Non-ECC CL5 (5-5-5-15) DIMM (Kit of 2) nVidia SLI Ready (KHX8500D2K2/2GN) 2GB Kit (2 x 1GB) 1066MHz DDR2 CL5 (5-5-5-15) DIMM (NVIDIA SLI-Ready)