Comparison of ZOTAC GeForce GTX 1080 AMP Edition video card vs GALAX GeForce RTX 3090 SG (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 AMP Edition runs at 1.683 GHz+ 5 % base clock speed and has 8 GB of GDDR5X memory, while video card GALAX GeForce RTX 3090 SG (1-Click OC) runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 230 W+ 28 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.