Sapphire Radeon HD 5970 OC review also features Sapphire Radeon HD 5870. Sapphire Radeon HD 5970 OC has 14% lower clock speed, 17% lower memory speed but twice the Shader Processors compared to the Sapphire Radeon HD 5870. Sapphire Radeon HD 5970 OC and Sapphire Radeon HD 5870 both have GDDR5 memory but the Sapphire Radeon HD 5970 OC has 2GB while the Sapphire Radeon HD 5870 has 1GB.



Link: UltimateHardware