Asus P5Q-EM G45 mATX motherboard

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Asus P5Q-EM:

November 18, 2008 by Lawrence Lee

Product Asus P5Q-EM
Intel LGA775 Motherboard
Manufacturer ASUSTeK
Street Price US$140

Asus has a tradition of producing quality, feature-rich motherboards. The P5E-VM HDMI was one of their best — an Intel LGA775 mATX board based on the G35 chipset. With so many features it made an excellent ATX replacement and stood alone in its class for almost a year. Now, poised to replace it is the Asus P5Q-EM. Sporting a similar feature-set, but based around the new G45 chipset, it has some big shoes to fill.

Our first experience with Intel's G45 chipset was very positive. The DG45FC, Intel's mini-ITX adaptation of the chipset, proved to be very capable and extremely power efficient. Its form factor, however, is very restrictive; it does not even support all of Intel's current processors — you cannot use a quad core with it or anything with a TDP over 65W. For those wanting a little more versatility, the microATX form factor is ideal. The question is: does G45 translate as well to mATX?

Asus' Intel motherboards typically ship with a glossy blue box.

Box contents.

Asus P5Q-EM: Specifications (from the product web page)
CPU Intel® Socket 775 for Intel® Core™2 Extreme/Core™2 Quad/ Core™2 Duo/Pentium® dual-core/Celeron® dual-core /Celeron® Processors
Compatible with Intel® 05B/05A/06 processors
Intel® 45nm Multi-Core CPU support
*Refer to for Intel CPU support list
Chipset Intel® G45 / ICH10R with Intel® Fast Memory Access (FMA) Technology
Front Side Bus 1600/1333/1066/800 MHz
Memory 4 x DIMM, Max. 16 GB, DDR2 1066(O.C.)/800/667 Memory
Dual Channel memory architecture
When installing total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended.
Expansion Slots 1 x PCIe 2.0 x16
2 x PCIe x1
1 x PCI
VGA Integrated Intel® Graphics Media Accelerator X4500HD
Multi-VGA output support: HDMI, DVI-D and RGB
Supports HDMI with max. resolution 1920 x [email protected]
Supports DVI with max. resolution 1920 x [email protected]
Supports RGB with max. resolution 2048 x [email protected]
Maximum shared memory of 1849 MB
Supports Microsoft® DirectX® 10, OpenGL® 2.1, Pixel Shader 4.0
Storage Southbridge
6 xSATA 3 Gb/s ports
Intel® Matrix Storage Technology Support RAID 0,1,5,10

Marvell® 6102
1 x UltraDMA 133/100/66 for up to 2 PATA devices
LAN Realtek® 8111C PCI-E Gigabit LAN controllers, featuring AI Net2
Audio Realtek® ALC 1200 8 -Channel High-Definition Audio CODEC
- Support Jack-detection, Multi-streaming
- ASUS Noise Filtering
- DTS Surround Sensation UltraPC
IEEE 1394 Agere® L-FW3227 controller supports 2 x 1394a ports (one at midboard; one at back panel)
USB 12 USB 2.0 ports (6 ports at mid-board, 6ports at back panel)
ASUS Unique Features ASUS Power Saving Solution:
- ASUS EPU-4 Engine
- AI Nap

ASUS Exclusive Feature:
- ASUS Express Gate

ASUS Quiet Thermal Solution:
- ASUS Fanless Design
- ASUS Fan Xpert

ASUS Crystal Sound:
- ASUS Noise Filtering

- ASUS Q-Connector
- ASUS O.C. Profile
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2
Overclocking Features Precision Tweaker 2:
- vCore: Adjustable CPU voltage at 0.00625V increment
- vDIMM: 45-step DRAM voltage control
- vChipset (NB): 30-step chipset voltage control
- vCPU PLL: 35-step CPU PLL voltage control
- vFSB Termination: 25-step reference voltage control

SFS (Stepless Frequency Selection)
- FSB tuning from 200MHz up to 800MHz at 1MHz increment
- PCI Express frequency tuning from 100MHz up to 180MHz at 1MHz increment

Overclocking Protection:
- ASUS C.P.R.(CPU Parameter Recall)
Special Features ASUS MyLogo 2™
Back Panel I/O Ports 1 x PS/2 Keyboard/Mouse combo port
1 x Optical S/PDIF output
1 x D-Sub port
1 x DVI port
1 x HDMI port
1 x IEEE1394a
1 x LAN (RJ45) port
6 x USB 2.0/1.1
8-channel Audio I/O
Internal I/O Connectors 3 x USB connectors support additional 6 USB ports
1 x Floppy disk drive connector
1 x IDE connector
1 x COM connector
6 x SATA connectors
1 x CPU Fan connector
1 x Chassis Fan connector
1 x Power Fan connector
1 x IEEE1394a connector
Front panel audio connector
1 x S/PDIF Out Header
Chassis Intrusion connector
CD audio in
24-pin ATX Power connector
1 x 4-pin ATX 12V Power connector
System Panel (Q-Connector)
BIOS 8 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.4, ACPI 2.0a, ASUS EZ Flash 2, ASUS CrashFree BIOS 3
Manageability WOL by PME, WOR by PME, WOR by Ring, Chassis Intrusion, PXE
Accessories 1 x UltraDMA 133/100/66 cable
1 x FDD cable
3 x Serial ATA cables
2 x Serial ATA power cable for 3 devices
1 x eSATA bracket
I/O Shield
User's manual
3 in 1 Q-connector
Support Disc Drivers
ASUS Express Gate
ASUS Update
Anti-virus software (OEM version)
Image-Editing Suite
Form Factor uATX Form Factor
9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

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