Amazon.com: PUSOKEI GTX550Ti Graphics Card, 6GB 192BIT GDDR5 PCI E 2.0 Gaming Graphics Card, Support DirectX11, 3D Stereo Display, Dual Fan HD MI VGA DVI Graphics Card for Gaming PC : Electronics
NeweggBusiness - GIGABYTE GeForce GTX 550 Ti (Fermi) 1GB GDDR5 PCI Express 2.0 x16 SLI Support Video Card GV-N550D5-1GI
GIGABYTE GeForce GTX 550 Ti (Fermi) Video Card GV-N550OC-1GI - Newegg.com