Used - Very Good: EVGA GeForce GTX 600 SuperClocked GeForce GTX 660 Video Card 02G-P4-2662-KR - Newegg.com
GTX 700 and GTX 600 series graphics cards will no longer be supported by Nvidia this October
Goodbye Kepler: NVIDIA announces that GeForce GTX 600 and 700 series cards will stop receiving new Game Ready Drivers from August 2021 - NotebookCheck.net News
EVGA GeForce GTX 600 SuperClocked GeForce GTX 660 Ti Video Card 02G-P4-3662-KR - Newegg.com