AMD Radeon R9 290X2 's Advantages
Released 1 years and 5 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (345.6GB/s vs 73.60GB/s)
2432 additional rendering cores
AMD Radeon HD 8670 OEM 's Advantages
Boost Clock1050MHz
Lower TDP (75W vs 580W)