NVIDIA GeForce 840A 's Advantages
Released 9 years and 4 months late
Boost Clock1124MHz
More VRAM (2GB vs 256GB)
384 additional rendering cores
Lower TDP (33W vs 45W)
NVIDIA GeForce Go 6800 's Advantages
Larger VRAM bandwidth (35.20GB/s vs 16.02GB/s)