Best Buy: NVIDIA GeForce GTX 550 Ti 1GB GDDR5 PCI Express 2.0 Graphics Card 9001105025
GIGABYTE Graphics Card Original GTX 550 Ti 1GB 192Bit GDDR5 Video Cards for nVIDIA Geforce GTX 550Ti HDMI DVI Used VGA Cards|Graphics Cards| - AliExpress
ASUS GeForce GTX 550 Ti (Fermi) Video Card ENGTX550 TI DC TOP/DI/1GD5 - Newegg.com
ASUS NVIDIA GeForce GTX 550 Ti 1 GB DDR5 PCI-Express Video Card with VGA/DVI/HDMI, ENGTX550 TI DC/DI/1GD5