AMD Radeon R9 270 1024SP 's Advantages
Released 3 years and 3 months late
Boost Clock925MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (153.6GB/s vs 12.80GB/s)
944 additional rendering cores
AMD Radeon HD 6290 's Advantages
Lower TDP (19W vs 150W)