AMD Radeon HD 6390 's Advantages
Lower TDP (39W vs 200W)
AMD Radeon HD 8950 OEM 's Advantages
Released 1 years and 6 months late
Boost Clock925MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (240.0GB/s vs 16.00GB/s)
1472 additional rendering cores