2. CPU / IMC / DRAM overvoltage setting switches (OV_DRAM, OV_IMC,
OV_CPU)
These switches allow you to enable or disable the advanced CPU, Integrated
Memory Controller (IMC), and DRAM overvoltage settings in BIOS. Read the
following information before you change the switch settings.
• Before you change the switch settings for extra-high overvoltage ability, use
Ensure your system functions well under the highest BIOS voltage settings
before you change the setting of these three switches.
• DO NOT enable the OV_CPU switch when you install a new CPU and have
system failure due to the wrong setting of the OV_CPU switch, shut down
the computer and set the switch back to its default position.
• According to Intel CPU spec, DIMMs voltage below 1.65V is recommended
to protect the CPU.
• The system may need a better cooling system (for example, a water-cooling
system) to work stably under high voltage settings.
OV_CPU OV_IMC OV_DRAM
Default 0.85V to 1.7V up to 1.7V up to 2.0V
Enable OV (red) 1.25V to 2.1V up to 1.9V up to 2.5V
The LED color indicates the voltage setting status of CPU, IMC and DRAM.
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