User Manual
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... 2-1 2.1 Managing and updating your BIOS 2-1 2.1.1 ASUS Update 2-1 2.1.2 ASUS EZ Flash 2 2-2 2.1.3 ASUS CrashFree BIOS 3 utility 2-3 2.1.4 ASUS BIOS Updater 2-4 2.2 BIOS setup program 2-7 Entering BIOS Setup at startup 2-7 Entering BIOS Setup after POST 2-7 2.3 Main menu 2-7 2.3.1 SATA 1-6 2-8 2.3.2 Storage Configuration 2-8 2.3.3 AHCI Configuration 2-9 2.3.4 System Information 2-9 2.4 Ai Tweaker menu 2-10 2.4.1 CPU Level Up 2-10 2.4.2 Ai Overclock Tuner 2-11 2.4.3 CPU Ratio Setting 2-12...
... 2-1 2.1 Managing and updating your BIOS 2-1 2.1.1 ASUS Update 2-1 2.1.2 ASUS EZ Flash 2 2-2 2.1.3 ASUS CrashFree BIOS 3 utility 2-3 2.1.4 ASUS BIOS Updater 2-4 2.2 BIOS setup program 2-7 Entering BIOS Setup at startup 2-7 Entering BIOS Setup after POST 2-7 2.3 Main menu 2-7 2.3.1 SATA 1-6 2-8 2.3.2 Storage Configuration 2-8 2.3.3 AHCI Configuration 2-9 2.3.4 System Information 2-9 2.4 Ai Tweaker menu 2-10 2.4.1 CPU Level Up 2-10 2.4.2 Ai Overclock Tuner 2-11 2.4.3 CPU Ratio Setting 2-12...
User Manual
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... tuning from 100MHz up to 200MHz at 1MHz increment - P7P55D-E LX specifications summary ASUS Q-Design ASUS Unique Features ASUS Exclusive Overclocking Features ASUS Q-LED (DRAM) ASUS Q-Slot ASUS Q-DIMM ASUS IO Level UP for Ultra Performance - ASUS Fanless Design: Stylish Heat-sink solution - ASUS O.C. Express Gate - vPCH: 23-step chipset voltage control - ASUS Noise Filter ASUS EZ DIY: - vDRAM Bus: 41-step DRAM voltage...
... tuning from 100MHz up to 200MHz at 1MHz increment - P7P55D-E LX specifications summary ASUS Q-Design ASUS Unique Features ASUS Exclusive Overclocking Features ASUS Q-LED (DRAM) ASUS Q-Slot ASUS Q-DIMM ASUS IO Level UP for Ultra Performance - ASUS Fanless Design: Stylish Heat-sink solution - ASUS O.C. Express Gate - vPCH: 23-step chipset voltage control - ASUS Noise Filter ASUS EZ DIY: - vDRAM Bus: 41-step DRAM voltage...
User Manual
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... Install a 64-bit Windows OS when you want to the memory address limitation on the motherboard, the actual usable memory for overclocking may install varying memory sizes in Channel A and Channel B. For effective use of memory, we recommend that you install 4GB or... Megabyte/MB). • The default memory operation frequency is dependent on the motherboard. Refer to support a full memory load (4 DIMMs) or overclocking condition. 1-10 Chapter 1: Product introduction For optimum compatibility, we recommend that you are supported for one DIMM per channel only. • According...
... Install a 64-bit Windows OS when you want to the memory address limitation on the motherboard, the actual usable memory for overclocking may install varying memory sizes in Channel A and Channel B. For effective use of memory, we recommend that you install 4GB or... Megabyte/MB). • The default memory operation frequency is dependent on the motherboard. Refer to support a full memory load (4 DIMMs) or overclocking condition. 1-10 Chapter 1: Product introduction For optimum compatibility, we recommend that you are supported for one DIMM per channel only. • According...
User Manual
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...2.66G CPU, enable the DRAM O.C. Refer to section 2.4.2 Ai Overclock Tuner for details. • Visit the ASUS website for each memory channel. • According to DDR3-1333. ASUS exclusively provides two DDR3-1600 DIMM support for the latest QVL. ...;• 9 1.9 •• 9-8-8(1066-8-7-7-20) 1.8 ••• 9-9-9-24 ••• 9-9-9-24(1066-7-7-7-20) 2 •• P7P55D-E LX Motherboard Qualified Vendors Lists (QVL) DDR3-2133MHz capability for CPU at 2.8 and 2.93GHz Vendor Part No. Timing Dimm(Bios) Voltage Heat-Sink Package 9-9-9-24(...
...2.66G CPU, enable the DRAM O.C. Refer to section 2.4.2 Ai Overclock Tuner for details. • Visit the ASUS website for each memory channel. • According to DDR3-1333. ASUS exclusively provides two DDR3-1600 DIMM support for the latest QVL. ...;• 9 1.9 •• 9-8-8(1066-8-7-7-20) 1.8 ••• 9-9-9-24 ••• 9-9-9-24(1066-7-7-7-20) 2 •• P7P55D-E LX Motherboard Qualified Vendors Lists (QVL) DDR3-2133MHz capability for CPU at 2.8 and 2.93GHz Vendor Part No. Timing Dimm(Bios) Voltage Heat-Sink Package 9-9-9-24(...
User Manual
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... not help, remove the onboard battery and move the cap back to pins 2-3. 1.9 Jumper Clear RTC RAM (3-pin CLRTC) This jumper allows you to overclocking, use the C.P.R. (CPU Parameter Recall) feature. Plug the power cord and turn off is required to enable C.P.R. Except when clearing the RTC RAM,... the chipset behavior, AC power off and on CLRTC jumper default position. Shut down the key during the boot process and enter BIOS setup to overclocking. Move the jumper cap from pins 1-2 (default) to pins 1-2. 3. Removing the cap will cause system boot failure! • If the steps above...
... not help, remove the onboard battery and move the cap back to pins 2-3. 1.9 Jumper Clear RTC RAM (3-pin CLRTC) This jumper allows you to overclocking, use the C.P.R. (CPU Parameter Recall) feature. Plug the power cord and turn off is required to enable C.P.R. Except when clearing the RTC RAM,... the chipset behavior, AC power off and on CLRTC jumper default position. Shut down the key during the boot process and enter BIOS setup to overclocking. Move the jumper cap from pins 1-2 (default) to pins 1-2. 3. Removing the cap will cause system boot failure! • If the steps above...
User Manual
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...system to test one set of failsafe settings. It takes about 5-10 seconds. • If your system fail to boot due to BIOS overclocking, press the MemOK! switch lights continuously. Turn off the computer and replace DIMMs during POST reminding you that the BIOS has been restored ... still fail to boot after using the MemOK! 1.10 Onboard switches Onboard switch allows you to fine-tune performance when working on the computer. ASUS P7P55D-E LX 1-19 This is ideal for about 30 seconds for successful boot. • The DRAM_LED also lights when the DIMM is not properly installed. ...
...system to test one set of failsafe settings. It takes about 5-10 seconds. • If your system fail to boot due to BIOS overclocking, press the MemOK! switch lights continuously. Turn off the computer and replace DIMMs during POST reminding you that the BIOS has been restored ... still fail to boot after using the MemOK! 1.10 Onboard switches Onboard switch allows you to fine-tune performance when working on the computer. ASUS P7P55D-E LX 1-19 This is ideal for about 30 seconds for successful boot. • The DRAM_LED also lights when the DIMM is not properly installed. ...
User Manual
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...-2009, American Megatrends, Inc. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Tools Exit Configure System Performance Settings CPU Level UP [Auto Ai Overclock Tuner [Auto] CPU Ratio Setting [Auto] Intel(R) SpeedStep(TM) Tech [Enabled] Intel(R) TurboMode Tech [Enabled] Xtreme Phase Full Power Mode [Auto...DRAM Frequency [Auto] QPI Frequency [Auto] Warning: this chapter vary depending on the CPU and DIMM model you to configure overclocking-related items. Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to...
...-2009, American Megatrends, Inc. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Tools Exit Configure System Performance Settings CPU Level UP [Auto Ai Overclock Tuner [Auto] CPU Ratio Setting [Auto] Intel(R) SpeedStep(TM) Tech [Enabled] Intel(R) TurboMode Tech [Enabled] Xtreme Phase Full Power Mode [Auto...DRAM Frequency [Auto] QPI Frequency [Auto] Warning: this chapter vary depending on the CPU and DIMM model you to configure overclocking-related items. Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect field values can cause the system to...
User Manual
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...the Ai Overclock Tuner item to [X.M.P.] and allows you set overclocking parameters. D.O.C.P. 2.93 Auto Auto D.O.C.P. • When using CPU Level UP. eXtreme Memory Profile [High Performance] This item appears only when you to achieve desired CPU internal frequency. ASUS P7P55D-E LX 2-11...module(s) supporting the eXtreme Memory Profile (X.M.P.) Technology, choose this ASUS exclusive DRAM O.C. If you install on each memory channel. 2.4.2 Ai Overclock Tuner [Auto] Allows selection of CPU overclocking options to select the X.M.P. profile, which applies different settings to...
...the Ai Overclock Tuner item to [X.M.P.] and allows you set overclocking parameters. D.O.C.P. 2.93 Auto Auto D.O.C.P. • When using CPU Level UP. eXtreme Memory Profile [High Performance] This item appears only when you to achieve desired CPU internal frequency. ASUS P7P55D-E LX 2-11...module(s) supporting the eXtreme Memory Profile (X.M.P.) Technology, choose this ASUS exclusive DRAM O.C. If you install on each memory channel. 2.4.2 Ai Overclock Tuner [Auto] Allows selection of CPU overclocking options to select the X.M.P. profile, which applies different settings to...
User Manual
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...adjust the value. Configuration options: [Disabled] [Enabled] 2.4.5 Intel(R) TurboMode Tech [Enabled] This item appears only if you set the Ai Overclock Tuner item to [Manual], [D.O.C.P.] or [X.M.P.]. The following two items appear only when you to [Auto]. PCIE Frequency [XXX] Allows you... frequency. Use the and keys to adjust the ratio between CPU Core Clock and BCLK Frequency. Refer to ensure the best CPU overclocking performance. Configuration options: [Disabled] [Enabled] 2.4.6 [Auto] [Enabled] Xtreme Phase Full Power Mode [Auto] Automatic configuration. You...
...adjust the value. Configuration options: [Disabled] [Enabled] 2.4.5 Intel(R) TurboMode Tech [Enabled] This item appears only if you set the Ai Overclock Tuner item to [Manual], [D.O.C.P.] or [X.M.P.]. The following two items appear only when you to [Auto]. PCIE Frequency [XXX] Allows you... frequency. Use the and keys to adjust the ratio between CPU Core Clock and BCLK Frequency. Refer to ensure the best CPU overclocking performance. Configuration options: [Disabled] [Enabled] 2.4.6 [Auto] [Enabled] Xtreme Phase Full Power Mode [Auto] Automatic configuration. You...
User Manual
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...;n�d�i�n�g��o�n��th�e��D�I�M��M�s� you to [1N] might enhance DRAM overclocking performance. DRAM WRITE To READ Delay (DR) [Auto] Configuration options: [Auto] [1 DRAM Clock] - [8 DRAM Clock] DRAM WRITE To READ Delay (SR) [Auto] Configuration options: [Auto... WRITE Delay (DR) [Auto] Configuration options: [Auto] [2 DRAM Clock] - [9 DRAM Clock] DRAM WRITE To WRITE Delay (SR) [Auto] Configuration options: [Auto] [4 DRAM Clock] [6 DRAM Clock] ASUS P7P55D-E LX 2-13
...;n�d�i�n�g��o�n��th�e��D�I�M��M�s� you to [1N] might enhance DRAM overclocking performance. DRAM WRITE To READ Delay (DR) [Auto] Configuration options: [Auto] [1 DRAM Clock] - [8 DRAM Clock] DRAM WRITE To READ Delay (SR) [Auto] Configuration options: [Auto... WRITE Delay (DR) [Auto] Configuration options: [Auto] [2 DRAM Clock] - [9 DRAM Clock] DRAM WRITE To WRITE Delay (SR) [Auto] Configuration options: [Auto] [4 DRAM Clock] [6 DRAM Clock] ASUS P7P55D-E LX 2-13
User Manual
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...] [1000mV] 2.4.11 CPU Clock Skew [Auto] Adjusting this item may need to 0.50000V with a 0.02V interval. 2-14 Chapter 2: BIOS information You may help enhancing BCLK overclocking ability. Refer to the CPU Voltage Mode item setting. According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. 2.4.15... keypad and press the key. The values range from 1.1V to 1.6V with a 0.00625V interval. 2.4.10 CPU Differential Amplitude [Auto] Different AMP might enhance BCLK overclocking ability.
...] [1000mV] 2.4.11 CPU Clock Skew [Auto] Adjusting this item may need to 0.50000V with a 0.02V interval. 2-14 Chapter 2: BIOS information You may help enhancing BCLK overclocking ability. Refer to the CPU Voltage Mode item setting. According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. 2.4.15... keypad and press the key. The values range from 1.1V to 1.6V with a 0.00625V interval. 2.4.10 CPU Differential Amplitude [Auto] Different AMP might enhance BCLK overclocking ability.
User Manual
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...Sets to [Enabled] for details. • The system may need better cooling system to work stably under high voltage settings. ASUS P7P55D-E LX 2-15 PCIE Spread Spectrum [Auto] Automatic configuration. Enhances the PCIE overclocking ability. Refer to set the Platform Controller Hub voltage. Sets to 1.49V with a 0.02V interval. • The values...47V-1.49V 2.4.17 [Auto] [Disabled] [Enabled] 2.4.18 [Auto] [Disabled] [Enabled] 2.4.19 [Auto] [Disabled] [Enabled] Load-Line Calibration [Auto] Automatic configuration. Enhances the BCLK overclocking ability. Follow Intel specifications.
...Sets to [Enabled] for details. • The system may need better cooling system to work stably under high voltage settings. ASUS P7P55D-E LX 2-15 PCIE Spread Spectrum [Auto] Automatic configuration. Enhances the PCIE overclocking ability. Refer to set the Platform Controller Hub voltage. Sets to 1.49V with a 0.02V interval. • The values...47V-1.49V 2.4.17 [Auto] [Disabled] [Enabled] 2.4.18 [Auto] [Disabled] [Enabled] 2.4.19 [Auto] [Disabled] [Enabled] Load-Line Calibration [Auto] Automatic configuration. Enhances the BCLK overclocking ability. Follow Intel specifications.