AMD Radeon HD 7950 Boost 's Advantages
Boost Clock has increased by 19% (925MHz vs 780MHz)
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 64.00GB/s)
1408 additional rendering cores
AMD Radeon R7 340 OEM 's Advantages
Released 2 years and 11 months late
Lower TDP (50W vs 200W)