SAPPHIRE RADEON HD 6670 REVIEW

"The Sapphire Radeon HD 6670 uses the Turks GPU at 800Mhz and has 1GB GDDR5 memory running at 4000Mhz. The Sapphire Radeon HD 6670 has a 128Bit Memory Interface, 480 Shader Processors and DirectX 11. The Sapphire Radeon HD 6670 has competition from the earlier Sapphire Radeon HD 5670. Games used for testing are AVP, Bulletstorm, Crysis 2, Hawk 2, Just Cause 2 and Metro 2033."

http://www.ultimatehardware.net/amd/sapphire_radeon_hd_6670.htm