AMD Radeon R9 280X '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 3 years and 3 months late
Boost Clock has increased by 20% (1200MHz vs 1000MHz)
Lower TDP (75W vs 250W)