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Asus M4A785G HTPC Motherboard

Phenom™ II/Athlon™ II/Sempron™ 100 Series Processors (AM3 CPU)

This motherboard supports AMD® AM3 multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR2 1066 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0 based system bus. This motherboard also supports AMD® CPUs in the new 45nm manufacturing process.

AMD® Phenom™ X4/ Phenom™ X3/ Athlon™ X2/ Athlon™/ Sempron™ processors (socket AM2+/AM2)

This motherboard supports AMD® Socket AM2+ multi-core processors. It features dual-channel DDR2 1066 memory support, data transfer rate up to 5200MT/s via HyperTransport™ 3.0 based system bus, and AMD® Cool ´n´ Quiet™ Technology.

Hybrid CrossFireX Support

Boosted Performance with Onboard GPU and Discrete Graphics Card
ATI Hybrid CrossFireX™ technology is a unique hybrid multi-GPU technology. It takes your gaming experience to the next level boosting PC performance by enabling the chipset’s integrated graphics processor and a discrete GPU to operate simultaneously with combined output for blisteringly-fast frame rates unleashing the graphics performance (Windows Vista® and Windows 7).

AMD 785G + SB710

AMD® 785G Chipset is designed to support up to 5200MT/s HyperTransport™ 3.0 (HT3.0) interface speed and PCI Express™ 2.0 x 16 graphics. It features the integrated ATI Radeon™ HD 4200 GPU and fully Directx 10.1 compliant.

HDMI Support

Enjoy Full HD 1080p Multimedia Home-Theater Entertainment
High-Definition Multimedia Interface (HDMI) is a set of digital video standards that delivers multi-channel audio and uncompressed digital video for full HD 1080p visuals through through a single cable. Supporting HDCP copy protection such as HD DVD and Blu-ray Discs, HDMI provides you with the highest-quality home theater experience.

ASUS Absolute Pitch Hi-Fi

Absolute Pitch delivers a vivid audio experience that is guaranteed to please listeners who appreciate good aural reproduction. The solution gets its name from “Perfect Pitch” which is the ability of reproducing a perfect, flawless note without help from external reference sources. Likewise, the Absolute Pitch series recreates a clear, precise, and non-distorted sound for an exceptional listening experience. It represents ASUS’ pursuit of delivering peak audio output with real sound and heightened dynamism. Both amateurs and professionals alike can enjoy the enhanced clarity in music-playback and exciting HD movie sound. With Absolute Sound, get ready to be overwhelmed by an amazingly live performance!

BD 192/24

Lossless Blu-ray Audio, Supports 192kHz/ 24-bit
ASUS BD 192/24 delivers 192kHz/ 24-bit Hi-Fi Blu-ray lossless and extreme fidelity sound. Experience true Blu-ray audio technology in a home theater PC setup when playing Blu-ray Disc content.


Be Overwhelmed by the Prodigious 10-channel Experience on a PC!
The critically acclaimed ENVY HD provides a professional, high-end audio experience that is highly regarded by discerning audio fans. With ASUS introducing the ENVY HD to its motherboards, the professional surround sound and rich acoustic experience is now available to the PC user. Enjoy prodigious 10-channel High Definition audio with a fine-textured graphical user interface.

Independent Audio Power

Enhanced Audio Clarity with Low Electronic Noise!
Power is a key factor affecting audio quality. Professional AV equipment usually isolates power supply for different channels or analog and digital signals for high-quality sound reproduction. Equipped with the revolutionary ASUS Absolute Pitch Hi-Fi technology, the ASUS HTPC motherboard series utilizes audio components with independent power connector for purer sounds and a significant reduction in electronic noise.

Gold-plated RCA Connector

Direct Plug and Play with Home Theater Equipment
Gold-plated RCA stereo audio connectors, which are compatible with high-end amplifiers, makes it simple to link PCs to home theater equipment. Additionally, the connector´s gold-plated shielding maximizes conductivity and signal transmission while enhancing durability!

DTS Surround Sensation UltraPC

Enjoy a Real Home Theater Experience
DTS UltraPC Surround Sound delivers an exceptional surround sound experience even with common PC audio tools such as existing stereo speakers or headphones. Besides experiencing virtual surround sound, you can also enjoy stronger low frequency bass sounds with “Bass Enhancement”, and clearer human speech even with loud background sounds with “Voice Clarification”. Thus these technologies provide an enhanced home-theatre audio experience with minimal effort. Simply plug in two stereo speakers or a pair of headphones to experience high-definition surround sounds featuring center and rear channels just like in the cinemas–wherever you are!

Home Theater Gate

The Gateway to Home Entertainment!
The ASUS Home Theater Gate´s specially-designed large icons and intuitiveness of the software make it easy for you to operate the media applications via a remote control up to 10 feet away from the monitor or TV. With its user-friendly interface, you can easily launch the most common media applications quickly via an integrated menu that brings various media types together.

Tranquil Mode

Super Silent for Multimedia Enjoyment
The tranquil Mode can lower the noise from CPU and chassis fans instantly by up to 28%. Also, it dramatically boosts energy efficiency and cost-effectiveness. By lowering the noise generated by fans, users will be able to enjoy their movies and music in a more conducive environment.

Soundwave Heatsink

Cooling Solution that is Both Stylish and Effective
The uniquely-styled heatsink is modelled after the bars of a sound wave graphical equalizer – symbolic of the motherboard´s emphasis on audio supremacy. Featuring a 0-dB thermal solution that delivers a noiseless PC environment, it provides users with extremely silent cooling with an elegant appearance!

Express Gate

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


CPU AMD AM3/AM2+/AM2 ;Phenom™II /Athlon™II /Phenom™ / Athlon™ /Sempron™ Processors
AMD Cool ‘n’ Quiet™ Technology
Support 45nm CPU
Chipset AMD 785G/SB710
* This model does NOT support ACC function.
System Bus Up to 5200 MT/s for AM3 /AM2+ CPU with HyperTransport™ 3.0;
Up to 2000 / 1600 MT/s for AM2 CPU
Memory 4 x DIMM, Max. 16 GB, DDR2 1200(O.C.)/1066/800/667 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*Due to AMD CPU limitation, DDR2 1200/1066 is supported by AM3/AM2+ CPU for one DIMM per channel only.
**Due to OS limitation, 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.
***Refer to or the user manual for the Memory QVL (Qualified Vendors Lidts)
Expansion Slots 1 x PCIe 2.0 x16
2 x PCIe x1
1 x PCI 2.2
VGA Integrated ATI Radeon™ HD 4200 GPU
– Supports HDMI™ Technology with max. resolution up to 1920 x 1200 (1080P)
– Supports Dual-link DVI with max. resolution up to 2560×1600 @60Hz
– Supports D-Sub with max. resolution up to 2560×1440 @75Hz for 16:9 format
– Hybrid CrossFireX™ Support
– Dual independent displays support with HDMI/DVI and D-Sub
– Supports Microsoft® DirectX 10.1, OpenGL 2.0, Pixel Shader 4.0
– Hardware Decode Acceleration for H.264, VC-1, and MPEG-2
– Maximum shared memory of 512MB
Storage SB710 Chipset
1 x external SATA 3Gb/s ports
5 x SATA 3Gb/s ports Support RAID 0,1,10
1 x Ultra DMA 133/100/66 for up to 2 PATA devices
* Due to the Windows XP/ Vista limitation, the RAID array with the total capacity over 2TB cannot be set as a boot disk. A RAID array over 2TB can only be set as a data disk only.
LAN Realtek 8112L Gigabit LAN controller featuring AI NET 2
Audio Absolute Pitch Hi-Fi featuring ENVY HD
– 10-channel High Definition Audio
– DTS Surround Sensation UltraPC
– Lossless 192kHz/ 24-bit BD audio
– Supports Jack-Detection, Multi-streaming
– 2-ch Gold-plated RCA output at back I/O
– Optical S/PDIF out port at back I/O
IEEE 1394 JMicron® JMB381 for 2 x 1394a ports
USB 10 USB 2.0/1.1 ports (6 ports at mid-board, 4 ports at back panel)
ASUS Unique Features ASUS HTPC Features
– ASUS Absolute Pitch Hi-Fi
– ASUS Home Theater Gate
– ASUS Tranquil Mode (for AM3/AM2+ CPU only)
ASUS Express Gate
ASUS Fanless Design: Soundwave Heat-sink
– ASUS Q-Connector
– ASUS CrashFree BIOS 3
– ASUS EZ Flash 2
– ASUS MyLogo 2
Overclocking Features Precision Tweaker
– vCore: Adjustable CPU voltage at 0.0125V increment
SFS (Stepless Frequency Selection)
– FSB tuning from 200MHz up to 600MHz at 1MHz increment
– PCI Express frequency tuning from 100MHz up to 150MHz at 1MHz increment
– GPU tuning from 500MHz up to 1500MHz
Overclocking Protection
– ASUS C.P.R.(CPU Parameter Recall)
Back Panel I/O Ports 1 x DVI
1 x D-Sub
1 x HDMI
1 x External SATA
1 x S/PDIF Out (Optical)
1 x IEEE 1394a
1 x LAN(RJ45) port
4 x USB 2.0/1.1
10 -Channel Audio I/O
2-ch RCA auido output connectors
Internal I/O Connectors 3 x USB connectors (6 ports)
1 x IDE connector
5 x SATA connectors
1 x CPU Fan connector
2 x Chassis Fan connector
1 x Power Fan connector
Front panel audio connector
1 x S/PDIF out header
CD audio in
24-pin ATX Power connector
4-pin ATX 12V Power connector
4-pin ATX 12V Audio power connector
System Panel
BIOS 16 Mb Flash ROM , AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0
Accessories User’s manual
1 x I/O Shield
1 x UltraDMA 133/100/66 cable
2 x SATA cable(s)
2 in 1 Q-connector (USB, System panel; Retail version only)
Support Disc Drivers
Anti-virus software (OEM version)
ASUS Update
ASUS Utility
Form Factor uATX Form Factor
9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

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