Comparison of ZOTAC GeForce GTX 1070 Twin Fan video card vs Colorful iGame GeForce RTX 2080 Neptune OC-V 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 Colorful iGame GeForce RTX 2080 Neptune OC-V runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 220 W+ 47 %, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.