Manual

2-22 Chapter 2: Hardware information
Chapter 2
2.6 Jumpers
DRAM Bus / QPI DRAM overvoltage setting
(3-pin OV_DRAM_BUS, 3-pin OV_QPI_DRAM)
These jumpers allow you to enable or disable the advanced DRAM Bus, and QPI DRAM
overvoltage settings in BIOS. Read the following information before you change the jumper
settings.
• Before you change the jumper settings for extra-high overvoltage ability, use the BIOS
items rst to adjust the desired DRAM, and QPI performance. Ensure that your system
functions well under the highest BIOS voltage settings before you change the setting
of these three jumpers.
• The system may need a better cooling system (for example, a water-cooling system)
to work stably under high voltage settings.
OV_DRAM_BUS OV_QPI_DRAM
Pins 1-2 (Default) up to 2.00V up to 1.70V
Pins 2-3 (OV Enabled) up to 2.46V up to 1.90V