GTX 1660 ti vs GTX 1070

Nvidia gtx 1070 versus gtx 1660 ti with ryzen 5 3600. Which is better now ? Hardware details Room temp - 33 deg , 1920x1080 resolution. CPU 1 - AMD R5 3600 CPU Cooler - Cooler master lite 120 aio GPU 1 - Zotac gaming gtx 1660 ti 6GB GPU 2 - ASUS gtx 1070 single fan 8GB Motherboard - B450 Tomahawk max RAM - Gskill Sniper X 2x8GB DDR4 3600 CL17 (17-18- 18-37) CASE - Deepcool matrexx55 Power - corsair cm750m 750 watts power supply SSD/Nvme - Samsung 960evo (OS), kingston a400 HDD - 2TB toshiba 7200 rpm OS - Windows 10 pro OS build 1809 Monitor - Acer eb321hq vmreviews [email protected]