EVGA Gerforce GTX 550 TI GDDR5 1GB 192BIT DX11 GeForce GTX 550 Ti with 951 MHz core clock Interface: PCI-E x, DVI-I, DVI-I, Mini-HDMI and SLI Capable MB 192-bit 0.5ns GDDR5 memory MHz Effective Memory Clock and MHz Shader Clock GB/sec Memory Bandwidth. Minimum 400-watt Power supply and 1 6-pin PCI-E Connector Required.