NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 300W)
AMD Radeon RX 6900 XT 's Advantages
Released 8 years and 4 months late
Boost Clock2250MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 28.51GB/s)
4736 additional rendering cores