DFI LanParty JR 790GX-M3H5 mATX Motherboard

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DFI LanParty JR 790GX-M3H5

June 28, 2009 by Lawrence Lee

Product DFI LP JR 790GX-M3H5
AMD AM3 mATX Motherboard
Manufacturer DFI
Street Price US$140~$150

To many, with the demise of ABIT, DFI has become the undisputed king of enthusiast motherboards. DFI boards typically overclock well, offer nifty features and assertive style. The "LANParty" moniker used for their current desktop boards perhaps most aptly applies to the LANParty JR 790GX-M3H5. It is a mATX motherboard utilizing the AMD 790GX chipset, so it can be run without a graphics card, but it also sports two full-sized PCI Express slots to utilize dual graphics cards in CrossFire. Gamers who lug their systems frequently to LAN parties would most appreciate the promise of a small, yet potent gaming system. The high level of customization the board provides may also be a boon for those interested in silent computing.


Typically colorful retail box.



Package contents, minus the board.

The included cables are bright yellow and UV reflective, and the IDE cable is rounded. Also included are a CrossFire bridge and the DFI equivalent of Asus' Q-Connector kit which eases the task of wiring the front panel and USB headers.

DFI LP JR 790GX-M3H5: Specifications (from the product web page)
CPU * AMD® Phenom™ II processor
* HyperTransport 3.0 (5200MT/s) HyperTransport 1.0 (2000/1600MT/s)
* AMD OverDrive provides tuning options using the new “Advanced Clock Calibration” overclocking feature.
* Socket 938 AM3 45nm
Chipset * AMD chipset - Northbridge: AMD 790GX - Southbridge: AMD SB750
System Memory * Four 240-pin DDR3 DIMM sockets
* Supports DDR3 1600(O.C.)/1333/1066 MHz
* Delivers up to 21Gb/s bandwidth at 1333MHz
* Supports dual channel (128-bit wide) memory interface
* Supports non-ECC unbuffered DIMMs
* Supports up to 16GB system memory Windows® 32-bit operating system is unable to accurately detect more than 4GB system memory. Therefore, if you are using this operating system, we strongly recommend that you install a less than 3GB system memory.
Expansion Slots * 2 PCI Express (Gen 2) x16 slots - Hybrid CrossFireXTM - combination of the integrated graphics and a discrete graphics card in a PCIE slot (8-lane port). - Two graphics cards support CrossFireXTM; each operating at x8 (8-lane ports) bandwidth
* 1 PCI Express x1 slot
* 1 PCI slot
BIOS * Award BIOS
* CMOS Reloaded
* CPU/DRAM overclocking
* CPU/DRAM/Chipset overvoltage
* 8Mbit SPI flash memory
Graphics * Integrated ATI Radeon™ HD 3300 graphics core
* Onboard graphics interface - HDMI port for both digital audio and video HD display - DVI-I port for digital LCD display
* Microsoft® DirectX 10
* Hybrid CrossFireX™ technology combines the onboard GPU and a discrete PCIE graphics card
* Onboard Performance cache for added performance
Audio * Realtek ALC885 8-channel HD Audio Codec
* High-performance DACs with 106dB dynamic range (A-Weight), ADCs with 101dB dynamic range (A-Weight)
LAN * Marvell 88E8056 PCIE Gigabit LAN controllers
* Fully compliant to IEEE 802.3 (10BASE-T), 802.3u (100BASE-TX) and 802.3ab (1000BASE-T) standards
Serial ATA with RAID * Supports up to 6 SATA devices
* SATA speed up to 3Gb/s
* RAID 0/1/0+1(10)/5/JBOD/AHCI
IDE * One IDE connector allows connecting up to two UltraDMA 133Mbps hard drives
Rear Panel I/O * 1 mini-DIN-6 PS/2 mouse port
* 1 mini-DIN-6 PS/2 keyboard port
* 1 HDMI-out port
* 1 coaxial RCA S/PDIF-out port
* 1 optical S/PDIF-out port
* 1 DVI-I port
* 4 USB 2.0/1.1 ports
* 1 RJ45 LAN port
* Center/subwoofer, rear R/L and side R/L jacks
* Line-in, line-out (front R/L) and mic-in jacks
Internal I/O * 4 connectors for 8 additional external USB 2.0 ports
* 1 connector for an external COM port
* 1 front audio connector
* 1 CD-in connector
* 1 IrDA connector
* 1 CIR connector
* 6 Serial ATA connectors
* 1 40-pin IDE connector
* 1 floppy connector
* 1 24-pin ATX power connector
* 1 8-pin 12V power connector
* 1 4-pin 5V/12V power connector (FDD type)
* 1 front panel connector
* 6 fan connectors
* EZ touch switches (power switch and reset switch)
Power Management * ACPI and OS Directed Power Management
* ACPI STR (Suspend to RAM) function
* Wake-On-PS/2 Keyboard/Mouse
* Wake-On-USB Keyboard/Mouse
* Wake-On-Ring
* Wake-On-LAN
* RTC timer to power-on the system
* AC power failure recovery

Hardware Monitor
* Monitors CPU/system/chipset temperature
* Monitors 12V/5V/3.3V/Vcore/Vbat/5Vsb/Vdimm/Vchip voltages
* Monitors the speed of the cooling fans
* CPU Overheat Protection function monitors CPU temperature during system boot-up
PCB * microATX form factor
* 24.5cm (9.64”) x 24.5cm (9.64”)


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