ATI Mobility Radeon HD 5670 Mac Edition 's Advantages
Lower TDP (15W vs 250W)
AMD Radeon R9 M395X Mac Edition 's Advantages
Released 5 years and 1 months late
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (174.7GB/s vs 25.44GB/s)
1648 additional rendering cores