AMD Radeon R9 270 's Advantages
Larger VRAM bandwidth (179.2GB/s vs 68.26GB/s)
512 additional rendering cores
Lower TDP (150W vs 300W)
Intel H3C XG310 's Advantages
Released 7 years late
Boost Clock has increased by 68% (1550MHz vs 925MHz)
More VRAM (8GB vs 2GB)