Nvidia GeForce GTX 560 Ti 1GB GDDR5 PCIe x16 Graphics Card✓ 2x DVI mini-HDMI | eBay
Amazon.com: ASUS GeForce GTX 550 Ti (Fermi) 1GB 192-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card, ENGTX550 TI DC TOP/DI/1GD5 : Electronics
EVGA GeForce GTX 560 Ti FPB 1GB GDDR5 PCI-E Graphics Card- 01G-P3-1561 – Buffalo Computer Parts