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15 cpu differential amplitude [auto, 16 cpu clock skew [auto, 17 cpu voltage mode [offset – Asus P7P55D-E EVO User Manual

Page 80: 18 imc voltage [auto, 19 dram voltage [auto, Cpu differential amplitude -20, Cpu clock skew -20, Cpu voltage mode -20, Imc voltage -20, Dram voltage -20

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Chapter 3: BIOS setup

Chapter 3

3.5.15

CPU Differential Amplitude [Auto]

Different AMP might enhance BCLK overclocking ability.

Configuration options: [Auto] [700mV] [800mV] [900mV] [1000mV]

3.5.16

CPU Clock Skew [Auto]

Adjusting this item may help enhancing BCLK overclocking ability. You may need to adjust

the CPU Clock Skew item at the same time.

Configuration options: [Auto] [Normal] [Delay 100ps]–[Delay 1500ps]

Some of the following items are adjusted by typing the desired values using the numeric keypad

and press the key. You can also use the <+> and <-> keys to adjust the value. To

restore the default setting, type [auto] using the keyboard and press the key.

3.5.17

CPU Voltage Mode [Offset]

Allows you to set the CPU Voltage Mode. Different sub-items appear according to the CPU

Voltage Mode item setting. Configuration options: [Offset] [Manual]

Offset Voltage [Auto]

This item appears only when you set the CPU Voltage Mode item to [Offset] and allows you to

set the Offset voltage. The values range from 0.00625V to 0.50000V with a 0.00625V interval.

Offset Sign [-]

This item appears only when you set the Offset Voltage item to a value other than [Auto].
[+]

To offset the voltage by a positive value.

[–]

To offset the voltage by a negative value.

Fixed Voltage [Auto]

This item appears only when you set the CPU Voltage Mode item to [Manual] and allows you

to set a fixed CPU voltage. The values range from 0.85V to 1.7V with a 0.00625V interval.

Refer to the CPU documentation before setting the CPU Vcore voltage. Setting a high

VCore voltage may damage the CPU permanently, and setting a low VCore voltage may

make the system unstable.

3.5.18

IMC Voltage [Auto]

Allows you to set the CPU Integrated Memory Controller voltage. The values range from 1.1V

to 1.7V with a 0.00625V interval.

3.5.19

DRAM Voltage [Auto]

Allows you to set the DRAM voltage. The values range from 1.20V to 2.5V* with a 0.0125V interval.

The value [2.5V] of the DRAM Voltage item is supported only if the OV_DRAM switch

is enabled. Otherwise the maximum voltage supported is [2.0V]. This item can be

automatically optimized if you install a XMP DIMM. Refer to 4. DRAM overvoltage

setting switch on page 2-26 for details.

According to Intel CPU spec, DIMMs with voltage requirement over 1.65V may

damage the CPU permanently. We recommend you install the DIMMs with the voltage

requirement below 1.65V.