ASUS GeForce GTX 550 Ti (Fermi) 1GB GDDR5 PCI Express 2.0 x16 SLI Support Video Card ENGTX550 TI DC TOP/DI/1GD5 GPUs / Video Graphics Cards - Newegg.ca
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EVGA GeForce GTX 550 Ti (Fermi) DirectX 11 Video Card - Newegg.com - Newegg.com