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Chapter 2: Hardware information
Chapter 2
2. CPU / DRAM overvoltage setting (3-pin OV_CPU/DRAM)
This jumper allows you to enable or disable the advanced CPU and DRAM overvoltage
settings in BIOS.
OV_CPU OV_DRAM
Pins 1-2 (Default) 0.8V - 1.92V 1.2V - 1.92V
Pins 2-3 (OV Enabled) 0.8V - 2.3V 1.2V - 2.3V
• Before you change the jumper settings for extra-high overvoltage ability, use the BIOS
items rst to adjust the desired CPU and DRAM performance. Ensure that your
system functions well under the highest BIOS voltage settings before you change the
settings.
• DO NOT set the OV_CPU/DRAM jumper to pins 2-3 when you install a new CPU and
have not booted for the rst time. Doing so may halt the system. For system failure
due to wrong setting of the OV_CPU/DRAM jumper, shut down your computer and
insert the jumper cap back to pins 1-2.
• According to Intel CPU specications, DIMMs with voltage requirement over 1.65V may
damage the CPU permanently. We recommend you ro install the DIMMs with the
voltage requirement below 1.65V.
• The system may need a better cooling system (for example, a water cooling system) to
work efciently under high voltage settings.
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