NVIDIA GeForce GTX 870M 's Advantages
Released 4 years and 9 months late
Boost Clock967MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (120.0GB/s vs 25.60GB/s)
1296 additional rendering cores
NVIDIA GeForce GT 240M 's Advantages
Lower TDP (23W vs 100W)