AMD Radeon R9 280X 's Advantages
Released 11 months late
Boost Clock has increased by 3% (1000MHz vs 975MHz)
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 192.0GB/s)
512 additional rendering cores
AMD Radeon HD 7870 XT 's Advantages
Lower TDP (185W vs 250W)