ATI Radeon HD 5770 Mac Edition 's Advantages
Larger VRAM bandwidth (76.48GB/s vs 32.00GB/s)
416 additional rendering cores
AMD Radeon R7 250 OEM 's Advantages
Released 3 years and 3 months late
Boost Clock1050MHz
More VRAM (2GB vs 1024GB)
Lower TDP (65W vs 108W)