Comparison of ZOTAC GAMING GeForce RTX 2070 Blower video card vs Gainward GeForce RTX 3090 Phoenix GS video card by specifications and benchmarks. ZOTAC GAMING GeForce RTX 2070 Blower runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 3090 Phoenix GS runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 175 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.