Comparison of ZOTAC GAMING GeForce RTX 2080 AMP video card vs GALAX GeForce RTX 3090 HOF Limited Edition video card by specifications and benchmarks. ZOTAC GAMING GeForce RTX 2080 AMP runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GALAX GeForce RTX 3090 HOF Limited Edition runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 225 W+ 5 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.