Description M3A78-T - AMD AM2+/AM2 Platform  
Support latest AMD Phenom ™ Quad-Core Processor  
Dual-Channel DDR2 -1066/800/667  
AMD Hybrid CrossFireX™ and DX10 Support  
SidePort Memory Onboard  
Quad-CrossFire Support  
HDMI/DVI/RGB Support  
Instant Internet Access with Express Gate  
 
Specification  
CPU  
AMD Socket AM2+ / AM2 Processors  
AMD Phenom™ FX / Phenom / Athlon™ / Sempron™  
AMD Cool n Quiet™ Technology  
Support CPU up to 140W  
 
Chipset  
AMD 790GX/SB750  
 
System Bus  
Up to 5200/MT/s HyperTransport™ 3.0 interface for AM2+ CPU  
2000 / 1600 MT/s for AM2 CPU  
 
Memory  
4 x DIMM, Max. 16 GB, DDR2 1066/800/667 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*Due to AMD CPU limitation, DDR2 1066 is supported by AM2+ CPU for one DIMM per channel only.  
**Please refer to www.asus.com or user manual for Memory QVL(Quality Vender List).  
***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  
3 x PCIe x16 (Support PCIe 2.0 / 1.0 Architecture ) (Dual x8 or  
Dual x16/x4; Triple x8/x4/x8)  
1 x PCIe x1  
2 x PCI 2.2  
 
VGA Integrated  
ATI Radeon™ HD 3300 GPU  
SidePort Memory - onboard 128MB DDR3 1333 memory  
Supports HDMI™ Technology with max. resolution up to 1920 x 1200 (1080P)  
Supports Dual-link DVI with max. resolution up to 2560x1600 @60Hz  
Supports D-Sub with max. resolution up to 2560x1440 @ 75Hz  
Hybrid CrossFireX™ Support (For Windows Vista only)  
HDMI/DVI/RGB Support  
Supports Microsoft® DirectX 10, OpenGL 2.0, Pixel Shader 4.0  
Maximum shared memory of 512MB  
 
Storage  
Southbridge  
1 xUltraDMA 133/100  
5 xSATA 3 Gb/s ports 1 x eSATA 3Gb/s ports with RAID 0, 1, 5 and 10 support  
 
LAN  
Gigabit LAN
 
Audio  
Realtek® ALC1200 8 -Channel High Definition Audio CODEC  
-Coaxial S/PDIF out port at back I/O  
 
USB  
12 USB 2.0 ports  
 
ASUS Unique Features  
ASUS Express Gate  
ASUS Quiet Thermal Solution:  
- ASUS AI Gear 2  
- ASUS AI Nap  
- ASUS Q-Fan2  
- 4+1 Phases ASUS Power Design  
ASUS Crystal Sound  
- ASUS Noise Filter  
ASUS EZ DIY:  
- ASUS Q-Shield  
- ASUS Q-Connector  
- ASUS O.C. Profile  
- ASUS EZ Flash 2  
 
Overclocking Features  
Intelligent overclocking tools:  
- AI Overclocking (Intelligent CPU Frequency Tuner)  
- ASUS AI Booster Utility  
Precision Tweaker 2  
- vCore: Adjustable CPU voltage at 0.125V increment  
- vChipset (N.B.): 25-step voltage control  
- vDIMM: 35-step DRAM voltage control  
SFS (Stepless Frequency Selection)  
- FSB tuning from 200MHz up to 600MHz at 1MHz increment  
- Memory tuning from 533MHz up to 1066MHz  
- PCIe frequency tuning from 100MHz up to 200MHz at 1MHz increment  
Overclocking Protection:  
- ASUS C.P.R. (CPU Parameter Recall)  
 
Special Features  
Uses 100% All High-quality Conductive Polymer Capacitors!  
ASUS MyLogo 2  
AMD OverDrive Support*  
* Advanced cooling system is required when advanced overclock functions of AMD OverDrive are enabled.  
 
Back Panel I/O Ports  
1 x PS/2 Keyboard/Mouse  
1 x S/PDIF Out (Optical)  
1 x HDMI  
1 x DVI  
1 x D-Sub  
1 x External SATA  
1 x IEEE 1394a  
1 x RJ45 port  
6 x USB 2.0/1.1  
8-Channel Audio I/O  
 
Internal I/O Connectors  
3 x USB connector (6 ports)  
1 x Floppy disk drive connector  
1 x IDE connector  
5 x SATA connectors  
1 x CPU Fan connector  
2 x Chassis Fan connectors  
1 x Power Fan connector  
Front panel audio connector  
1 x IEEE 1394a connector  
1 x S/PDIF Out Header  
Chassis Intrusion connector  
CD audio in  
24-pin ATX Power connector  
4-pin ATX 12V Power connector  
System Panel  
 
BIOS  
8 Mb Flash ROM  
DMI 2.0
AMI BIOS  
PnP
WfM 2.0  
SM BIOS 2.3  
ACPI 2.0a  
ASUS EZ Flash 2  
 
Accessories  
UltraDMA 133/100/66 cable  
FDD cable  
SATA cables  
SATA power cables  
Q-Shield  
User s manual  
3 in 1 Q-connector  
Support Disc Drivers  
Express Gate  
ASUS PC Probe II  
ASUS Update  
AMD AOD  
Anti-virus software (OEM version)  
 
Form Factor  
ATX Form Factor  
12 inch x 9.6 inch ( 30.5 cm x 24.5 cm )