NVIDIA GeForce 810M 's Advantages
Released 7 years and 10 months late
Boost Clock950MHz
More VRAM (2GB vs 512GB)
368 additional rendering cores
NVIDIA GeForce 8400M GT 's Advantages
Larger VRAM bandwidth (19.20GB/s vs 14.40GB/s)
Lower TDP (14W vs 45W)