EVGA GEFORCE GTS 250 REVIEW AT ULTIMATE HARDWARE - "EVGA GeForce GTS 250 review also featuring the Inno3D GeForce 9800 GTX+. The EVGA GeForce GTS 250 has a 3% higher clock speed, the same 2200 Mhz memory speed and 128 Pixel Shaders as the Inno3D GeForce 9800 GTX+. This means only advantage the EVGA GeForce GTS 250 has over Inno3D GeForce 9800 GTX+ is an extra 512MB Memory."
XFX RADEON HD 4890 REVIEW AT ULTIMATE HARDWARE - "XFX Radeon HD 4890 review also featuring the Gainward Radeon HD 4870. The XFX Radeon HD 4890 has a 11% higher clock speed, 9% higher memory speed and the same 800 Pixel Shaders as the Gainward Radeon HD 4870. This means the XFX Radeon HD 4890 will be atleast 10% faster than the Gainward Radeon HD 4870. Another advantage for the XFX Radeon HD 4890 is the extra 512MB Memory which will definately increase game performance."