AMD Radeon R9 M290X Mac Edition 's Advantages
Larger VRAM bandwidth (174.7GB/s vs 96.00GB/s)
384 additional rendering cores
AMD Radeon RX 550 Mobile 's Advantages
Released 2 years and 8 months late
Boost Clock has increased by 32% (1287MHz vs 975MHz)
Lower TDP (50W vs 80W)