AMD Radeon R9 280 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 96.00GB/s)
1024 additional rendering cores
AMD Radeon R7 360 's Advantages
Released 1 years and 3 months late
Boost Clock has increased by 13% (1050MHz vs 933MHz)
Lower TDP (100W vs 200W)