AMD Radeon HD 7970 GHz Edition 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 112.0GB/s)
1024 additional rendering cores
AMD Radeon RX 460 1024SP 's Advantages
Released 4 years and 7 months late
Boost Clock has increased by 14% (1200MHz vs 1050MHz)
Lower TDP (75W vs 300W)