AMD Radeon R9 M295X Mac Edition 's Advantages
Released 2 years and 10 months late
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (174.3GB/s vs 14.40GB/s)
1648 additional rendering cores
AMD Radeon HD 7550M 's Advantages
Boost Clock550MHz
Lower TDP (14W vs 250W)