AMD Radeon Pro W6600M 's Advantages
Released 8 years and 4 months late
Boost Clock2034MHz
More VRAM (8GB vs 512GB)
Larger VRAM bandwidth (224.0GB/s vs 40.00GB/s)
1408 additional rendering cores
NVIDIA GeForce GT 640M Mac Edition 's Advantages
Lower TDP (32W vs 90W)