AMD Radeon HD 7970 GHz Edition 's Advantages
Boost Clock1050MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 25.60GB/s)
1568 additional rendering cores
AMD Radeon HD 8550 OEM 's Advantages
Released 1 years and 4 months late
Lower TDP (60W vs 300W)