NVIDIA GeForce GTX 555 OEM 's Advantages
Lower TDP (150W vs 375W)
AMD Radeon HD 8990 OEM 's Advantages
Released 1 years and 11 months late
Boost Clock1000MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (288.0GB/s vs 91.87GB/s)
1760 additional rendering cores