Certain models of graphics cards contain a Double BIOS feature that allows to switch between two different BIOS versions. This allows for a custom BIOS to be flashed for the purpose of overclocking options. This option is only available on select GTX 760, 770, and 780 models.

Please always keep the primary BIOS as default BIOS without flashing unless further notice from EVGA. The secondary BIOS provides better performance and more.

Switching the BIOS is easy:

1. Turn off the system.
2. Locate the BIOS selector as indicated below.
3. Switch the BIOS selector to secondary (or third) position.
4. Boot up the PC.
5. You are now using the secondary BIOS!

*After the system successfully posts up, the active running BIOS will be based on the BIOS selector position before system resets or powers up.
*Please do not change the BIOS selector position while the system is posting up.

GTX 780:


GTX 770 Classified:


GTX 770: