AMD Radeon HD 7970 X2 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (264.0GB/s vs 28.80GB/s)
1664 additional rendering cores
AMD Radeon R7 430 OEM 's Advantages
Released 3 years and 10 months late
Boost Clock780MHz
Lower TDP (50W vs 500W)