NVIDIA GeForce GT 330M Mac Edition 's Advantages
Lower TDP (23W vs 100W)
AMD Radeon R9 M290X 's Advantages
Released 3 years and 9 months late
Boost Clock900MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 25.28GB/s)
1232 additional rendering cores