Took apart my GTX 1660 and noticed two of the memory modules have no cooling attached to them. I OC'd the memory from 4000 mhz to 4980 mhz (gddr5). I have been
Graphics Card Cooler Fan | Gtx 1660 Super Asus Fan | Asus Rtx 2060 Super Fan - Laptop Cooling Pads - Aliexpress
Cpu Cooler Heatsink for Galax GTX 1660 Super GTX1660 Ti Replacement Graphics Card Cooling Fan Radiator - AliExpress
EVGA GeForce GTX 1660 Ti XC Ultra review: Laser-focused on all-around great performance | PCWorld
95MM XY-D10015SH DC 12V 0.55A Cooler Fan For MSI GeForce GTX 1660 SUPE – gpu-fan
Amazon.com: Rakstore FD8015U12D T128015BU 75mm Graphics Card Cooling Fan Replacement for ASUS TUF GTX 1650 1650 Super GTX1660 1660 Super GTX 1660 Ti TUF Cooler Fan : Electronics
Amazon.com: Gigabyte GeForce GTX 1660 Ti OC 6G 192-bit GDDR6 DisplayPort 1.4 HDMI 2.0B with Windforce 2X Cooling System Graphic Cards- Gv-N166TOC-6GD : Electronics