User Manual
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... 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 2.4.4 Intel(R) SpeedStep(TM...
... 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 2.4.4 Intel(R) SpeedStep(TM...
User Manual
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...menu 2-16 2.5.1 CPU Configuration 2-16 2.5.2 Uncore Configuration 2-18 2.5.3 Onboard Devices Configuration 2-18 2.5.4 USB Configuration 2-19 2.5.5 PCIPnP 2-19 2.5.6 Intel VT-d Configuration 2-19 2.6 Power menu 2-20 2.6.1 Suspend Mode 2-20 2.6.2 Repost Video on S3 Resume 2-20 2.6.3 ACPI 2.0 Support 2-20...2.7 Boot menu 2-23 2.7.1 Boot Device Priority 2-23 2.7.2 Boot Settings Configuration 2-23 2.7.3 Security 2-24 2.8 Tools menu 2-25 2.8.1 ASUS O.C. Profile 2-25 2.8.2 AI NET 2 2-26 2.8.3 ASUS EZ Flash 2 2-26 2.8.4 Express Gate 2-26 2.8.5 IO Levelup 2-26 2.9 Exit menu 2-27
...menu 2-16 2.5.1 CPU Configuration 2-16 2.5.2 Uncore Configuration 2-18 2.5.3 Onboard Devices Configuration 2-18 2.5.4 USB Configuration 2-19 2.5.5 PCIPnP 2-19 2.5.6 Intel VT-d Configuration 2-19 2.6 Power menu 2-20 2.6.1 Suspend Mode 2-20 2.6.2 Repost Video on S3 Resume 2-20 2.6.3 ACPI 2.0 Support 2-20...2.7 Boot menu 2-23 2.7.1 Boot Device Priority 2-23 2.7.2 Boot Settings Configuration 2-23 2.7.3 Security 2-24 2.8 Tools menu 2-25 2.8.1 ASUS O.C. Profile 2-25 2.8.2 AI NET 2 2-26 2.8.3 ASUS EZ Flash 2 2-26 2.8.4 Express Gate 2-26 2.8.5 IO Levelup 2-26 2.9 Exit menu 2-27
User Manual
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... Memory QVL for details. ** Refer to www.asus.com or this user manual for up to the physical characteristics of individual CPUs. P7P55D-E LX specifications summary CPU Chipset Memory Expansion Slots Storage LAN USB Audio LGA1156 socket for Intel® Core™ i7 / Core™ ...i5 / Core™ i3 processors Supports Intel® Turbo Boost Technology * Refer to www.asus.com for Intel CPU support list Intel® P55...
... Memory QVL for details. ** Refer to www.asus.com or this user manual for up to the physical characteristics of individual CPUs. P7P55D-E LX specifications summary CPU Chipset Memory Expansion Slots Storage LAN USB Audio LGA1156 socket for Intel® Core™ i7 / Core™ ...i5 / Core™ i3 processors Supports Intel® Turbo Boost Technology * Refer to www.asus.com for Intel CPU support list Intel® P55...
User Manual
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... devices on IO Level UP to boost the USB 3.0 or SATA 6Gb/s data transfer rate to up to -point links, allowing increased bandwidth and stability. ASUS P7P55D-E LX 1-1 Intel® Lynnfield / Clarkdale processor is one -chipset design to support 2-channel (4 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes, enabling higher graphics performance...
... devices on IO Level UP to boost the USB 3.0 or SATA 6Gb/s data transfer rate to up to -point links, allowing increased bandwidth and stability. ASUS P7P55D-E LX 1-1 Intel® Lynnfield / Clarkdale processor is one -chipset design to support 2-channel (4 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes, enabling higher graphics performance...
User Manual
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...18 1-19 13. The edge with external ports goes to the rear part of the chassis. 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Intel® P55 Serial ATA connectors (7-pin SATA 1-6) 8. Marvell® Serial ATA 6.0 Gb/s connectors (7-pin SATA_6G_1/2 [gray]) Page Connectors/...pin EATXPWR, 8-pin EATX12V) 3. USB connectors (10-1 pin USB910, USB1112, USB1314) 1-9 11. Serial port connector (10-1 pin COM1) 1-25 ASUS P7P55D-E LX 1-3 DDR3 DIMM slots CPU, chassis, and power fan connectors 4. (4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN) 5. Place this ...
...18 1-19 13. The edge with external ports goes to the rear part of the chassis. 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Intel® P55 Serial ATA connectors (7-pin SATA 1-6) 8. Marvell® Serial ATA 6.0 Gb/s connectors (7-pin SATA_6G_1/2 [gray]) Page Connectors/...pin EATXPWR, 8-pin EATX12V) 3. USB connectors (10-1 pin USB910, USB1112, USB1314) 1-9 11. Serial port connector (10-1 pin COM1) 1-25 ASUS P7P55D-E LX 1-3 DDR3 DIMM slots CPU, chassis, and power fan connectors 4. (4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN) 5. Place this ...
User Manual
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...; The product warranty does not cover damage to the socket contacts resulting from the retention tab. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on the motherboard. 2. ASUS will shoulder the cost of the motherboard, ensure that all power cables are installing a CPU. 1-4 Load... cap is shipment/transit-related. • Keep the cap after installing the motherboard. Press the load lever with a surface mount LGA1156 socket designed for the Intel® Core™ i7 / Core™ i5 / Core™ i3 Processors.
...; The product warranty does not cover damage to the socket contacts resulting from the retention tab. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on the motherboard. 2. ASUS will shoulder the cost of the motherboard, ensure that all power cables are installing a CPU. 1-4 Load... cap is shipment/transit-related. • Keep the cap after installing the motherboard. Press the load lever with a surface mount LGA1156 socket designed for the Intel® Core™ i7 / Core™ i5 / Core™ i3 Processors.
User Manual
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...an LGA1156-compatible CPU heatsink and fan assembly only. If you buy a boxed Intel® processor, the package includes the CPU fan and heatsink assembly. Place the heatsink on the motherboard. 2. ASUS P7P55D-E LX 1-7 Push down two fasteners at a time in size and dimension. If you... purchased a separate CPU heatsink and fan assembly, ensure that you use only Intel®‑certified multi‑directional heatsink and fan....
...an LGA1156-compatible CPU heatsink and fan assembly only. If you buy a boxed Intel® processor, the package includes the CPU fan and heatsink assembly. Place the heatsink on the motherboard. 2. ASUS P7P55D-E LX 1-7 Push down two fasteners at a time in size and dimension. If you... purchased a separate CPU heatsink and fan assembly, ensure that you use only Intel®‑certified multi‑directional heatsink and fan....
User Manual
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... Profile feature in Channel A and Channel B. For optimum compatibility, we recommend that you obtain memory modules from the same vendor. • Due to Intel CPU spec, CPUs with a core frequency of 2.66G support the maximum DIMM frequency of up of 512Mb (64MB) chips or less (Memory chip capacity...-sized channel is dependent on the motherboard. Under the default state, some memory modules for one DIMM per channel only. • According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. • According to the memory address limitation on 32-bit Windows OS...
... Profile feature in Channel A and Channel B. For optimum compatibility, we recommend that you obtain memory modules from the same vendor. • Due to Intel CPU spec, CPUs with a core frequency of 2.66G support the maximum DIMM frequency of up of 512Mb (64MB) chips or less (Memory chip capacity...-sized channel is dependent on the motherboard. Under the default state, some memory modules for one DIMM per channel only. • According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. • According to the memory address limitation on 32-bit Windows OS...
User Manual
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... Dual-channel memory configuration. • ASUS exclusively provides hyper DIMM support function. • Hyper DIMM support is subject to the physical characteristics of up to Intel spec definition, DDR3-1600 is supported for the latest QVL. 1-16 Chapter 1: Product introduction To use DIMMs of 3) DS N/A Chip NO. P7P55D-E LX Motherboard Qualified Vendors Lists (QVL...
... Dual-channel memory configuration. • ASUS exclusively provides hyper DIMM support function. • Hyper DIMM support is subject to the physical characteristics of up to Intel spec definition, DDR3-1600 is supported for the latest QVL. 1-16 Chapter 1: Product introduction To use DIMMs of 3) DS N/A Chip NO. P7P55D-E LX Motherboard Qualified Vendors Lists (QVL...
User Manual
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...to connect a high-definition front panel audio module to [HD Audio]. 4. By default, this connector, set the item to [HD Audio]. ASUS P7P55D-E LX 1-23 If you want to connect an AC'97 front panel audio module to this connector, set the Front Panel Type item in the BIOS...AC97]. If you installed Serial ATA hard disk drives, you can create a RAID 0, 1, 5, and 10 configuration with the Intel® Matrix Storage Technology through the onboard Intel® P55 chipset. Serial ATA connectors (7-pin SATA1-6) These connectors are for the Serial ATA signal cables for a chassis-mounted...
...to connect a high-definition front panel audio module to [HD Audio]. 4. By default, this connector, set the item to [HD Audio]. ASUS P7P55D-E LX 1-23 If you want to connect an AC'97 front panel audio module to this connector, set the Front Panel Type item in the BIOS...AC97]. If you installed Serial ATA hard disk drives, you can create a RAID 0, 1, 5, and 10 configuration with the Intel® Matrix Storage Technology through the onboard Intel® P55 chipset. Serial ATA connectors (7-pin SATA1-6) These connectors are for the Serial ATA signal cables for a chassis-mounted...
User Manual
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...ATA hard disk drives, set this item to [RAID]. This will be effective only if the device is the section for detecting ATA/ATAPI devices. ASUS P7P55D-E LX 2-9 Configuration option: [Disabled] [Enabled] IDE Detect Time Out (Sec) [35] Selects the time out value for AHCI configuration. Configuration options:...] [Not Installed] SMART Monitoring [Enabled] Allows you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel® Matrix Storage Technology configuration from the sub-menu of device connected to [AHCI]. The BIOS automatically detects the BIOS information, CPU specification...
...ATA hard disk drives, set this item to [RAID]. This will be effective only if the device is the section for detecting ATA/ATAPI devices. ASUS P7P55D-E LX 2-9 Configuration option: [Disabled] [Enabled] IDE Detect Time Out (Sec) [35] Selects the time out value for AHCI configuration. Configuration options:...] [Not Installed] SMART Monitoring [Enabled] Allows you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel® Matrix Storage Technology configuration from the sub-menu of device connected to [AHCI]. The BIOS automatically detects the BIOS information, CPU specification...
User Manual
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... 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...
... 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...
User Manual
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...1333 1600 Above 1600 CPU Frequency (GHz) 2.66 2.8 Auto Auto D.O.C.P. D.O.C.P. 2.93 Auto Auto D.O.C.P. • When using CPU Level UP. ASUS P7P55D-E LX 2-11 CPU Level UP Allows you to set the profile(s) supported by your memory module. Overclocks DRAM frequency by your memory module(s) for the ... options to select the X.M.P. Loads settings for the system. Loads the optimal settings for using DIMMs with a frequncy higher than the Intel® CPU spec, use this item to select a DRAM O.C. Profile [DDR3-1800MHz] This item appears only when you set overclocking...
...1333 1600 Above 1600 CPU Frequency (GHz) 2.66 2.8 Auto Auto D.O.C.P. D.O.C.P. 2.93 Auto Auto D.O.C.P. • When using CPU Level UP. ASUS P7P55D-E LX 2-11 CPU Level UP Allows you to set the profile(s) supported by your memory module. Overclocks DRAM frequency by your memory module(s) for the ... options to select the X.M.P. Loads settings for the system. Loads the optimal settings for using DIMMs with a frequncy higher than the Intel® CPU spec, use this item to select a DRAM O.C. Profile [DDR3-1800MHz] This item appears only when you set overclocking...
User Manual
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... Overclock Tuner for details. The valid value ranges differently according to your CPU model. 2.4.4 Intel(R) SpeedStep(TM) Tech [Enabled] When set the CPU Ratio Setting item to [Auto]. Configuration options: [Disabled] [Enabled] 2.4.5 Intel(R) TurboMode Tech [Enabled] This item appears only if you set to [Disabled], the CPU... to run faster than marked frequency in BIOS. The values range from 100 to 200. 2.4.7 DRAM Frequency [Auto] Allows you to set to Intel CPU spec, CPUs with a 2.66G CPU, enable the DRAM O.C. Use the and keys to adjust the value. Selecting a very high DRAM ...
... Overclock Tuner for details. The valid value ranges differently according to your CPU model. 2.4.4 Intel(R) SpeedStep(TM) Tech [Enabled] When set the CPU Ratio Setting item to [Auto]. Configuration options: [Disabled] [Enabled] 2.4.5 Intel(R) TurboMode Tech [Enabled] This item appears only if you set to [Disabled], the CPU... to run faster than marked frequency in BIOS. The values range from 100 to 200. 2.4.7 DRAM Frequency [Auto] Allows you to set to Intel CPU spec, CPUs with a 2.66G CPU, enable the DRAM O.C. Use the and keys to adjust the value. Selecting a very high DRAM ...
User Manual
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... you to 1.6V with a 0.00625V interval. The values range from 0.85V to set the Offset voltage. Refer to set the CPU Voltage Mode. According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. 2.4.15 CPU PLL Voltage [Auto] Allows you to set the CPU Integrated Memory...
... you to 1.6V with a 0.00625V interval. The values range from 0.85V to set the Offset voltage. Refer to set the CPU Voltage Mode. According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect the CPU. 2.4.15 CPU PLL Voltage [Auto] Allows you to set the CPU Integrated Memory...
User Manual
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The values range from 1.05V to work stably under high voltage settings. Follow Intel specifications. CPU Spread Spectrum [Auto] Automatic configuration. Refer to the table on the next page for details. • The system may need better cooling system... directly. Sets to set the Platform Controller Hub voltage. Enhances the PCIE overclocking ability. 2.4.16 PCH Voltage [Auto] Allows you to [Enabled] for EMI control. ASUS P7P55D-E LX 2-15 IMC Voltage DRAM Voltage CPU PLL Voltage PCH Voltage Blue 1.10V-1.16V 1.20V-1.56V 1.80V-1.86V 1.05V-1.19V Yellow 1.18V-1.22V 1.58V-1.62V 1.88V...
The values range from 1.05V to work stably under high voltage settings. Follow Intel specifications. CPU Spread Spectrum [Auto] Automatic configuration. Refer to the table on the next page for details. • The system may need better cooling system... directly. Sets to set the Platform Controller Hub voltage. Enhances the PCIE overclocking ability. 2.4.16 PCH Voltage [Auto] Allows you to [Enabled] for EMI control. ASUS P7P55D-E LX 2-15 IMC Voltage DRAM Voltage CPU PLL Voltage PCH Voltage Blue 1.10V-1.16V 1.20V-1.56V 1.80V-1.86V 1.05V-1.19V Yellow 1.18V-1.22V 1.58V-1.62V 1.88V...
User Manual
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... the Adjacent Cache Line Prefetcher function. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot CPU Configuration Uncore Configuration Onboard Devices Configuration USB Configuration PCIPnP Intel VT-d [Disabled] Tools Exit Configure CPU. ←→ Select Screen ↑↓ Select Item Enter Go to adjust the value. Use the and keys to...
... the Adjacent Cache Line Prefetcher function. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot CPU Configuration Uncore Configuration Onboard Devices Configuration USB Configuration PCIPnP Intel VT-d [Disabled] Tools Exit Configure CPU. ←→ Select Screen ↑↓ Select Item Enter Go to adjust the value. Use the and keys to...
User Manual
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... cores to run multiple operating systems separately and simultaneously, enabling one thread per activated CPU core is controlled by your CPU. Intel(R) C-STATE Tech [Enabled] [Enabled] Allows the CPU to zero (0). C State package limit setting [Auto] This item appears...cool down. [Disabled] Disables this function. Configuration options: [Auto] [C1] [C3] [C6] ASUS P7P55D-E LX 2-17 Intel(R) HT Technology [Enabled] [Enabled] Enables the Intel Hyper-Threading Technology. [Disabled] Only one system to virtually function as several systems. [Disabled] Disables this function...
... cores to run multiple operating systems separately and simultaneously, enabling one thread per activated CPU core is controlled by your CPU. Intel(R) C-STATE Tech [Enabled] [Enabled] Allows the CPU to zero (0). C State package limit setting [Auto] This item appears...cool down. [Disabled] Disables this function. Configuration options: [Auto] [C1] [C3] [C6] ASUS P7P55D-E LX 2-17 Intel(R) HT Technology [Enabled] [Enabled] Enables the Intel Hyper-Threading Technology. [Disabled] Only one system to virtually function as several systems. [Disabled] Disables this function...
User Manual
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... values. Legacy USB Support [Auto] [Disabled] Disables the function. [Enabled] Enables the support for PCI/PnP devices. ASUS P7P55D-E LX 2-19 If no USB device is detected, the item shows None. BIOS EHCI Hand-off [Enabled] [Disabled] Disables the function... [Enabled] Enables the USB Host Controllers. [Disabled] Disables the controllers. If detected, the USB controller legacy mode is disabled. Enables the Intel Virtualization Technology for Directed I /O. Onboard USB 3.0 Controller [Enabled] [Enabled] Enables the onboard USB 3.0 controller. [Disabled] Disables the onboard ...
... values. Legacy USB Support [Auto] [Disabled] Disables the function. [Enabled] Enables the support for PCI/PnP devices. ASUS P7P55D-E LX 2-19 If no USB device is detected, the item shows None. BIOS EHCI Hand-off [Enabled] [Disabled] Disables the function... [Enabled] Enables the USB Host Controllers. [Disabled] Disables the controllers. If detected, the USB controller legacy mode is disabled. Enables the Intel Virtualization Technology for Directed I /O. Onboard USB 3.0 Controller [Enabled] [Enabled] Enables the onboard USB 3.0 controller. [Disabled] Disables the onboard ...