AMD Radeon HD 6630M Mac Edition 's Advantages
Lower TDP (26W vs 250W)
AMD Radeon R9 M395X Mac Edition 's Advantages
Released 4 years and 4 months late
More VRAM (4GB vs 256GB)
Larger VRAM bandwidth (174.7GB/s vs 19.20GB/s)
1568 additional rendering cores