ASUS P7P55D Intel P55 LGA 1156 ATX Motherboard - P7P55D

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Product Overview

This motherboard supports the latest Intel® Lynnfield processors in LGA1156 package which has memory and PCI Express controller integrated to support 2-channel (4 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes providing great graphics performance. Intel® Lynnfield processor is one of the most powerful and energy efficient CPU in the world.

Intel® Lynnfield Processor Ready
Intel P55
The Intel® P55 Express Chipset is the latest one-chipset design to support latest 1156 socket Intel® Core™ i7/Core™ i5 Processors. Intel® P55 providing improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability.

PCIe 2.0
This motherboard supports the latest PCIe 2.0 devices for double speed and bandwidth which enhances system performance.

Quad-GPU CrossFireX Support!
P7P55D brings you the multi-GPU choice of either CrossFireX. The motherboard features the most powerful Intel P55 platform to optimize PCIe allocation in multiple GPU configurations. Expect a brand-new gaming style you’ve never experienced before!

Dual-Channel DDR3 2133(O.C.)/1600/ 1333/1066 support
The motherboard supports DDR3 memory that features data transfer rates of 2133(O.C.) / 1600 /1333 / 1066 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR3 architecture enlarges the bandwidth of your system memory to boost system performance.

Whether novice or enthusiast, TurboV Evo satisfies overclockers of any level. Intelligently push systems to the fastest, stable clock speeds with Auto-Tuning. Turbo Key boosts performance with a simple touch, while TurboV offers additional advanced options for breaking those records!

Auto Tuning
Achieve extreme yet stable overclocking results automatically with Auto Tuning! With built-in stability testing, Auto Tuning lets even beginners improve performance with no additional cost.

The T.Probe microchip detects and balances power phase loads and temperatures real-time. With optimal power phase functions, components run cooler and extend system lifespan.

ASUS 12+2 Phase Power Design
The groundbreaking 12+2 phase VRM design is brought to the ASUS motherboards. 12+2 phase power design, 12-phase for vCore and extra 2-phase for Memory controller inside CPU, can provide the highest power efficiency, and hence generates less heat to effectively enhance the overclocking capability. With the high quality power components such as low RDS (on) MOSFETs, Ferrite core chokes with lower hysteresis loss and 100% Japan-made high quality conductive polymer capacitors, ASUS 12+2 phase VRM design also ensure longer component life and minimum power loss.

ASUS Express Gate
Express Gate is an ASUS exclusive OS that provides you with quick access to the Internet and key applications before entering the Windows® OS.

MemOK! quickly ensures memory boot compatibility. This remarkable memory rescue tool requires a mere push of a button to patch memory issues. MemOK! determines failsafe settings and dramatically improves your system boot success. Get your system up and running in no time!

The new ASUS EPU - the world's first power saving engine, has been upgraded to a new six engine version, which provides total system power savings by detecting current PC loadings and intelligently moderating power in real-time. With auto phase switching for components (which includes the CPU, VGA card, memory, chipset, drives and system fan), the EPU automatically provides the most appropriate power usage via intelligent acceleration and overclocking - helping save power and money.

ASUS Fanless Design - Heat-sink solution
The streamline-shaped heatsink features 0-dB thermal solution that offers users a noiseless PC environment. Not only the beautifully curved fins upgrade the visual enjoyment for motherboard users, but also the special Streamline Airflow Guiding design lowers the temperature of the north bridge chipset through high efficient heat-exchange. Combined with usability and aesthetics, the ASUS streamline-shaped heat-sink will give users an extremely silent and cooling experience with the elegant appearance!

Up to 11°C Cooler - Stack Cool 3
ASUS Xtreme Phase Power Design plus Stack Cool 3 provides a better thermal solution with more efficient heat dissipation up to 11%. Lowering the onboard temperature improves overall motherboard performance and prolongs the lifespan of critical components.

Fan Xpert
ASUS Fan Xpert intelligently allows users to adjust both the CPU and chassis fan speed according to different ambient temperature , which is caused by different climate conditions in different geographic regions and system loading.Built-in variety of useful profiles offer flexible controls of fan speed to achieve a quiet and cool environment.

8-channel Audio
The onboard 8-channel HD audio (High Definition Audio, previously codenamed Azalia) CODEC enables high-quality 192KHz/24-bit audio output, jack-sensing feature, retasking functions and multi-streaming technology that simultaneously sends different audio streams to different destinations. This motherboard now adopts the future standard to deliver the most vivid audio enjoyment!!

DTS Surround Sensation UltraPC delivers exceptional 5.1 surround experience through the most common PC audio setups - your existing stereo speakers or headphones. In addition to virtual surround, “Bass enhancement” provides stronger low frequency bass sound, and “Voice clarification” provides clear human dialogue even with loud background sound. With these technologies, you may experience a better home-theater audio with ease.

Noise Filter
This feature detects repetitive and stationary noises like computer fans, air conditioners, and other background noises then eliminates it in the incoming audio stream while recording.

ASUS Q-Design
ASUS Q-Design enhances your DIY experience. All of Q-LED, Q-Slot and Q-DIMM design speed up and simplify the DIY process!

The specially designed ASUS Q-Shield does without the usual "fingers" - making it convenient and easy to install. With better electric conductivity, it ideally protects your motherboard against static electricity and shields it against Electronic Magnetic Interference (EMI).

The ASUS Q-Connector allows you to connect or disconnect chassis front panel cables in one easy step with one complete module. This unique adapter eliminates the trouble of plugging in one cable at a time, making connection quick and accurate.

EZ-Flash 2
EZ Flash 2 is a user-friendly BIOS update utility. Simply launch this tool and update BIOS from a USB flash disk before entering the OS. You can update your BIOS only in a few clicks without preparing an additional floppy diskette or using an OS-based flash utility.

O.C. Profile
Freely share and distribute favorite overclocking settings The motherboard features the ASUS O.C. Profile that allows users to conveniently store or load multiple BIOS settings. The BIOS settings can be stored in the CMOS or a separate file, giving users freedom to share and distribute their favorite overclocking settings.

IEEE 1394a interface
IEEE 1394a interface provides high speed digital interface for audio/video appliances such as digital television, digital video camcorders, storage peripherals & other PC portable devices.

S/PDIF-out on Back I/O Port
This motherboard provides convenient connectivity to external home theater audio systems via optical S/PDIF-out (SONY-PHILIPS Digital Interface) jacks. It allows to transfer digital aud


Manufacturer Asus
Mfg Part# P7P55D
SKU 211874064
UPC 610839172665
UPC 14 00610839172665
Product Guide Click here for more products from ASUS!
Intel LGA1156 Platform
Intel® P55 Express Chipset
ASUS Hybrid Technology
TurboV EVO
T.Probe Technology for Active Cooling
ASUS 12+2 Phase Power Design
Quad-GPU CrossFireX Support!
Tech Specs
LGA1156 socket for Intel® Core™ i7/Core™ i5 Processors
Supports Intel® Turbo Boost Technology
Intel® P55 Express Chipset
4 x DIMM, max. 16GB, DDR3 2133(O.C.)*/1600/1333/1066 MHz, non-ECC, un-buffered memory
Dual channel memory architecture
Supports Intel® Extreme Memory Profile (XMP)
*Hyper DIMM support is subject to the physical characteristics of individual CPUs. Some hyper DIMMs only support one DIMM per channel. Please refer to Memory QVL for details.
**Refer to or this user manual for the Memory QVL(Qualified Vendors Lists).
Expansion Slots
1 x PCI Express 2.0 x16 slots (single at x16)
1 x PCI Express 2.0 x16 slots (@x4 mode, 2.5GT/s)
2 x PCI Express 2.0 x1 (2.5GT/s)
3 x PCI
Multi-GPU support
Supports ATI® Quad-GPU CrossFireX™ Technology
Intel® P55 Express Chipset
6 x SATA 3.0 Gb/s ports
Intel Matrix Storage Technology supports RAID 0, 1, 5 and 10
JMicron® JMB363 SATA & PATA controller:
1 x UltraDMA 133/100/66 for up to 2 PATA devices
1 x eSATA 3Gb/s port (SATA on-the-go)
1 x SATA 3Gb/s port (black)
Realtek® 8112L Gigabit LAN controller featuring AI NET2
VIA® VT1828S 8-channel High Definition Audio CODEC
Absolute Pitch BD192/24
DTS Surround Sensation UltraPC
BD audio layer Content Protection
Supports Jack-Detection, Multi-streaming, Front Panel Jack-Retasking
Optical S/PDIF out ports at back I/O
IEEE 1394
VIA® 6308P controller supports 2 x IEEE 1394a ports(one at mid-board; one at back panel)
14 x USB 2.0 ports (6 ports at mid-board, 8 ports at back panel)
ASUS Unique Features
ASUS Hybrid Processor - TurboV EVO
Auto Tuning, TurboV and Turbo Key
ASUS Hybrid Phase
T.Probe Technology for Active Cooling
12+2 Phase Power Design
ASUS Hybrid OS - Express Gate
ASUS Xtreme Design
ASUS Exclusive Features
ASUS Quiet Thermal Solution
ASUS Fanless Design: Stylish Heat-sink solution
ASUS Fanless Design: Stack Cool 3
ASUS Fan Xpert
ASUS Crystal Sound
ASUS Noise Filter
ASUS Q-Shield
ASUS Q-Connector
ASUS O.C. Profile
ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS MyLogo 2
Multi-language BIOS
ASUS Q-Design
ASUS Exclusive Overclocking Features
Precision Tweaker 2:
vCore: Adjustable CPU voltage at 0.00625V increment
vIMC: 97-step IMC voltage control
vDRAM Bus: 81-step DRAM voltage control
vPCH: 2-step chipset voltage control
vCPU_PLL: 4-step reference voltage control
SFS (Stepless Frequency Selection)
Internal Base Clock tuning from 80MHz up to 500MHz at 1MHz increment
PCI Express frequency tuning from 100MHz up to 200MHz at 1MHz increment
Overclocking Protection:
ASUS C.P.R.(CPU Parameter Recall)
Back Panel I/O Ports
1 x PS/2 Keyboard (Purple)
1 x PS/2 mouse port (Green)
1 x Optical S/PDIF Output
1 x IEEE1394a
1 x RJ45 port
8 x USB 2.0/1.1
9-channel Audio I/O
Internal I/O Connectors
3 x USB connectors support additional 6 USB ports
1 x IDE connector
7 x SATA connectors
1 x CPU Fan connector
2 x Chassis Fan connector (1x4-pin, 1x3-pin)
1 x Power Fan connector
1 x IEEE1394a connector
Front panel audio connector
1 x S/PDIF Out Header
CD audio in
24-pin ATX Power connector
1 x 8-pin ATX 12V Power connector
System Panel(Q-Connector)
1 x MemOK! button
16 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3
WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE
1 x UltraDMA 133/100 cable
4 x Serial ATA 3.0Gb/s cables
ASUS Q-Shield
User's manual
2 in 1 Q-connector
Support DVD
ASUS Utilities
ASUS Update
Anti-virus software (OEM version)
Form Factor
ATX Form Factor, 12”x 9.6” (30.5cm x 24.4cm)
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