AMD Radeon HD 8990 OEM 's Advantages
Released 2 years and 10 months late
Boost Clock1000MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (288.0GB/s vs 153.0GB/s)
448 additional rendering cores
ATI Radeon HD 5870 Mac Edition 's Advantages
Lower TDP (228W vs 375W)