NVIDIA GeForce RTX 4090 's Advantages
Released 11 years and 6 months late
Boost Clock2520MHz
More VRAM (24GB vs 2GB)
14848 additional rendering cores
AMD Radeon HD 6990 's Advantages
Larger VRAM bandwidth (160.0TB/s vs 1.01TB/s)
Lower TDP (375W vs 450W)