AMD Radeon R9 280X 's Advantages
Released 2 years and 6 months late
Boost Clock1000MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 14.40GB/s)
2000 additional rendering cores
NVIDIA GeForce GT 520 PCI 's Advantages
Lower TDP (29W vs 250W)