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
ASUS 8800 GTS TOP Specs | TechPowerUp GPU Database
8800 GTS 512 vs. 8800 Ultra - NVIDIA GeForce 8800 GTS 512 & GeForce 8800 GT 256MB: Playing with Memory and G92