NVIDIA GeForce 840A 's Advantages
Lower TDP (33W vs 95W)
AMD Radeon E9550 MXM 's Advantages
Released 2 years and 6 months late
Boost Clock has increased by 13% (1266MHz vs 1124MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 16.02GB/s)
1920 additional rendering cores