Comparison of PNY GeForce GTX 1070 XLR8 Gaming Overclocked Twin Fan video card vs ZOTAC GAMING GeForce GTX 1660 Twin Fan video card by specifications and benchmarks. PNY GeForce GTX 1070 XLR8 Gaming Overclocked Twin Fan runs at 1.518 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory, while video card ZOTAC GAMING GeForce GTX 1660 Twin Fan runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 150 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.