Comparison of ZOTAC GeForce GTX 1080 IceStorm 2X video card vs PNY GeForce GTX 1660 6GB XLR8 Gaming OC Single Fan video card by specifications and benchmarks. ZOTAC GeForce GTX 1080 IceStorm 2X runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card PNY GeForce GTX 1660 6GB XLR8 Gaming OC Single Fan runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 230 W+ 28 %, and the second is 125 W+ 4 %. Compare the table of benchmark results to find out which graphic card is better.