AMD Radeon HD 6670 's Advantages
Lower TDP (66W vs 150W)
AMD Radeon RX 580 OEM 's Advantages
Released 5 years and 2 months late
Boost Clock1266MHz
More VRAM (8GB vs 1024GB)
Larger VRAM bandwidth (256.0GB/s vs 64.00GB/s)
1824 additional rendering cores