ATI Radeon HD 3870 Mac Edition 's Advantages
Lower TDP (106W vs 150W)
AMD Radeon RX 570 's Advantages
Released 8 years and 10 months late
Boost Clock1244MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (224.0GB/s vs 72.06GB/s)
1728 additional rendering cores