NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 250W)
NVIDIA GeForce RTX 2080 SUPER 's Advantages
Released 7 years and 1 months late
Boost Clock1815MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (495.9GB/s vs 28.51GB/s)
2688 additional rendering cores