AMD Radeon R9 280X 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 73.60GB/s)
1664 additional rendering cores
AMD Radeon R7 350 OEM 's Advantages
Released 1 years and 7 months late
Boost Clock has increased by 5% (1050MHz vs 1000MHz)
Lower TDP (65W vs 250W)