Full Details from Amazon.com : http://www.amazon.com/gp/product/B005C31F2M?tag=onigi-20
XFX AMD Radeon HD 6870 3D-Ready Graphics Card (HD-687A-ZHFC)
900 MHz GPU core clock
4200 Mhz Memory Speed
1 GB GDDR5 high speed memory
AMD HD3D Technology
PCI-E 21 Bus support