EVGA 170-BL-E762 - Manual (Page 40)

EVGA X58 SLI CLASSIFIED Motherboard
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CPU VCore Booster
For convenience of users when overclocking, the ECP houses 3 CPU VCore
Boosters for real-time boost of CPU VCore. Each button boosts the vcore by
+0.1v.
The red LED will light up when VCore booster is pressed. When one red LED
is lit, VCore is boosted by +0.1v. When 2 red LEDs are lit, VCore is boosted by
+0.2v. When all 3 red LEDs are lit, VCore is boosted by +0.3v. To disable the
VCore boost, just press again and VCore will go down to what you have set in
the bios.