NVIDIA GeForce 840A 's Advantages
Released 5 years and 8 months late
Boost Clock1124MHz
More VRAM (2GB vs 512GB)
352 additional rendering cores
Lower TDP (33W vs 45W)
NVIDIA GeForce 9700M GT 's Advantages
Larger VRAM bandwidth (25.60GB/s vs 16.02GB/s)