ATI Radeon HD 3830 's Advantages
Lower TDP (75W vs 150W)
AMD Radeon R9 270 1024SP 's Advantages
Released 6 years and 11 months late
Boost Clock925MHz
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (153.6GB/s vs 26.50GB/s)
704 additional rendering cores