ATI FirePro V3900 's Advantages
Lower TDP (50W vs 150W)
AMD Radeon R9 270 1024SP 's Advantages
Released 3 years and 1 months late
Boost Clock925MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (153.6GB/s vs 28.80GB/s)
544 additional rendering cores