NVIDIA GeForce GTX 1080 's Advantages
Released 4 years and 1 months late
Boost Clock1733MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (320.3GB/s vs 28.51GB/s)
2176 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 180W)