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BIOS
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.
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Frequency/Voltage options. Voltage tweaks are severely limited and no
undervolting is possible.
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More Frequency/Voltage options. Minor adjustments can be made to chipset/SB
voltage.
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"Hardware Monitor." Q-Fan control is available for both CPU
and Chassis fans.
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BIOS Summary
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Setting
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Options
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CPU Frequency
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200 MHz to 500 MHz |
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CPU Voltage |
+50 mV, +100 mV, +150 mV |
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Overclock Options
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2%, 5%, 8%, 10% |
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Memory Frequency
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Athlon X2 4850e - 667 MHz, 800 MHz
Phenom II X3 720 - 667 MHz, 800 MHz, 1066 MHz |
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Memory Timing Control
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Intermediate |
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Memory Voltage
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1.800V, 1.900V, 2.000V, 2.100V |
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Processor-Northbridge Voltage
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+50 mV, +100 mV, +150 mV |
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Chipset Voltage
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1.1V, 1.2V, 1.3V, 1.4V |
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Southbridge Voltage
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1.1V, 1.2V |
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Integrated Graphics
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GPU Clock
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150 MHz to 999 MHz (500 MHz default) |
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UMA Frame Buffer
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32MB, 64MB, 128MB, 256MB, |
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Fan Control
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CPU Fan Type |
PWM or DC Fan |
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CPU Q-Fan Mode
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Performance, Optimal, Silent |
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Chassis Q-Fan Mode
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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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