Amazon.com: HP 488877-001 NVIDIA GeForce 8800 GTS 512MB graphics card - Must be paired with another GeForce 8800 GTS 512 MB to enable SLI technology : Electronics
512-P3-N801-AR | EVGA GeForce 8800 GT 512MB 256-Bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Support HDTV/ S-Video Out/ Dual DVI Video Graphics Card