NVIDIA GeForce GTX TITAN 's Advantages
More VRAM (6GB vs 4GB)
Larger VRAM bandwidth (288.4GB/s vs 128.0GB/s)
1920 additional rendering cores
AMD Radeon RX 6400 's Advantages
Released 8 years and 11 months late
Boost Clock has increased by 165% (2321MHz vs 876MHz)
Lower TDP (53W vs 250W)