Comparison of Gainward GeForce RTX 2080 Phantom GS video card vs Colorful GeForce RTX 3090 NB-V video card by specifications and benchmarks. Gainward GeForce RTX 2080 Phantom GS runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Colorful GeForce RTX 3090 NB-V runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 215 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.