AMD Radeon 550 's Advantages
Released 6 years and 9 months late
Boost Clock1183MHz
More VRAM (2GB vs 1GB)
Lower TDP (50W vs 108W)
ATI Radeon HD 5770 Mac Edition 's Advantages
Larger VRAM bandwidth (76.48GB/s vs 56.00GB/s)
288 additional rendering cores