DFI LanParty JR 790GX-M3H5 mATX Motherboard

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For enthusiasts, the options available within the BIOS can make a board good or great. The ability to manipulate frequencies, voltages, and fan control settings vary depending on the hardware and the amount of trust placed in the user's hands by the manufacturer.

"Genie BIOS" menu. Plenty of frequency and voltage options with good ranges are available.

"Genie BIOS" menu, continued.

"PC Health Status." The board's fan control system can be tweaked through three different on/off temperatures.

BIOS Summary
CPU Frequency
200 MHz to 700 MHz
CPU Voltage -800mV to +775mV in 25mV increments
Memory Frequency
800, 1066, 1333, 1600 MHz
Memory Timing Control
Memory Voltage
1.500V to 2.493V (1.612V default) in 0.0225V increments
NB HT Voltage
1.20V to 1.55V (1.20V default) in 0.05V increments
NB Core Voltage
1.15V to 1.50V (1.40V default) in 0.05V increments
NB PCIE Voltage
1.10V (default), 1.20V, 1.30V, 1.40V
SB PLL Voltage 1.16V (default), 1.26V, 1.36V, 1.46V
Integrated Graphics
IGX Engine Clock
150 MHz to 1000 MHz (700 MHz default)
Memory Options UMA, UMA+SidePort
UMA Frame Buffer
32MB, 64MB, 128MB, 256MB, 512MB
SidePort Clock Speed 400 MHz, 533 MHz, 667 MHz
Side Port Voltage 1.60V (default), 1.70V, 1.80V, 1.90V
Fan Control
Shutdown Temp 60°C to 90°C in 5°C increments
CPU Fan Fully On/Turn Off Temp 25°C to 50°C in 5°C increments
SYS Fan Fully On/Turn Off Temp
NB Fan Fully On/Turn Off Temp

The BIOS allows for plenty of voltage and frequency modification to satisfy overclockers. The CPU voltage can also be decreased by up to 0.800V and undervolting can be used with Cool'n'Quiet enabled meaning an undervolt can be applied to both the idle and load voltage. The fan control also looks promising — there minimum and maximum temperatures can be used to adjust the fan behavior of three different fans.

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