Comparison of ZOTAC GeForce GTX 1070 Twin Fan video card vs GALAX GeForce RTX 3090 SG (1-Click OC) video card by specifications and benchmarks. ZOTAC GeForce GTX 1070 Twin Fan runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 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 220 W+ 47 %, and the second is 420 W+ 20 %. Compare the table of benchmark results to find out which graphic card is better.