Asus P7P55 WS SUPERCOMPUTER User Guide - Page 59

CPU / IMC / DRAM overvoltage setting switches OV_DRAM, OV_IMC, OV_CPU - ws supercomputer specs

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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. The LED color indicates the voltage setting status of CPU, IMC and DRAM. Default Enable OV (red) OV_CPU 0.85V to 1.7V 1.25V to 2.1V OV_IMC up to 1.7V up to 1.9V OV_DRAM up to 2.0V up to 2.5V • Before you change the switch settings for extra-high overvoltage ability, use the BIOS items first to adjust the desired CPU, IMC, and DRAM performance. 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 not booted for the first time. Doing so may cause the system to halt. For 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. ASUS P7P55 WS Supercomputer 2-35

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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
the BIOS items first to adjust the desired CPU, IMC, and DRAM performance.
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
not booted for the first time. Doing so may cause the system to halt. For
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.
ASUS P7P55 WS Supercomputer
2-35