AOpen AX4SG-U - Full-Range Adjustable CPU Core Voltage

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This motherboard supports CPU VID function. The CPU core voltage will be automatically detected and the range is from 0.8375V to
1.6000V. It is not necessary to set CPU Core Voltage.
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BIOS Setup > Frequency/Voltage Control > CPU Bus Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency in BIOS; no jumpers or switches are needed. The default
setting is "table select mode". You can adjust the FSB from "CPU Host/RAM/PCI Clock" for overclocking.
Core Frequency = CPU FSB Clock * CPU Ratio
PCI Clock = CPU FSB Clock / Clock Ratio
AGP Clock = PCI Clock x 2
CPU Ratio 8x, 10x… 25x, 26x, 27x, 28x
CPU FSB (By BIOS table) 100-400MHz