AMD Radeon HD 7950 Mac Edition 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 179.2GB/s)
512 additional rendering cores
AMD Radeon R7 265X OEM 's Advantages
Released 1 years and 5 months late
Boost Clock925MHz
Lower TDP (150W vs 200W)