AMD Radeon 550X 640SP 's Advantages
Released 4 years and 1 months late
Boost Clock has increased by 15% (1071MHz vs 933MHz)
More VRAM (4GB vs 3GB)
Lower TDP (50W vs 200W)
AMD Radeon R9 280 's Advantages
Larger VRAM bandwidth (240.0GB/s vs 48.00GB/s)
1152 additional rendering cores