Asus M4A78-HTPC/RC: A Complete HTPC Solution?

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For enthusiasts, the options available in the BIOS can make a good board a great one. 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.

Frequency/Voltage options. Voltage tweaks are severely limited and no undervolting is possible.

More Frequency/Voltage options. Minor adjustments can be made to chipset/SB voltage.

"Hardware Monitor." Q-Fan control is available for both CPU and Chassis fans.

BIOS Summary
CPU Frequency
200 MHz to 500 MHz
CPU Voltage +50 mV, +100 mV, +150 mV
Overclock Options
2%, 5%, 8%, 10%
Memory Frequency
Athlon X2 4850e - 667 MHz, 800 MHz
Phenom II X3 720 - 667 MHz, 800 MHz, 1066 MHz
Memory Timing Control
Memory Voltage
1.800V, 1.900V, 2.000V, 2.100V
Processor-Northbridge Voltage
+50 mV, +100 mV, +150 mV
Chipset Voltage
1.1V, 1.2V, 1.3V, 1.4V
Southbridge Voltage
1.1V, 1.2V
Integrated Graphics
GPU Clock
150 MHz to 999 MHz (500 MHz default)
UMA Frame Buffer
32MB, 64MB, 128MB, 256MB,
Fan Control
CPU Fan Type PWM or DC Fan
CPU Q-Fan Mode
Performance, Optimal, Silent
Chassis Q-Fan Mode
Performance, Optimal, Silent

Overall the BIOS is much more restrictive than most 780G boards. As CPU voltage can only be increased, and by only a small amount at that, the M4A78-HTPC/RC is a poor choice for both overclocking and underclocking. It's fine for HTPC, but a bit of extra versatility wouldn't have hurt.

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