AMD Radeon 550X 640SP 's Advantages
Released 7 years and 10 months late
Boost Clock1071MHz
More VRAM (4GB vs 1024GB)
Lower TDP (50W vs 228W)
ATI Radeon HD 5870 Mac Edition 's Advantages
Larger VRAM bandwidth (153.0GB/s vs 48.00GB/s)
960 additional rendering cores