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Recommended Book
Maximum PC Guide to Extreme PC Mods (Maximum PC Guide To...)
By Jon Phillips
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Price: $29.99

Home » Video
How to Overclock Your Video Card
Author: Gabriel Torres
Type: Tutorials Last Updated: November 28, 2006
Page: 10 of 12
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Tweaking the I/O Bus (Cont’d)

Besides increasing the I/O bus clock rate, you can also increase its voltage. Usually by increasing its voltage you will be able to set it at higher clock rates without making the system to crash. But we recommend you to first find out the maximum clock rate the I/O bus will run with stability (i.e. without crashing), and only then increase the I/O bus voltage to see if your system will run without crashing with a higher clock rate. Keep in mind that sometimes you won’t be able to increase the clock rate even increasing the bus voltage.

Not all motherboards provide this option. But from all the motherboards we shown above, only the one portrayed on Figure 17 didn’t provide it. On the motherboard on Figure 15 it was called “AGP OverVoltage Control”, on Figure 16 it was called “AGP Voltage”, on Figures 18 and 19 you would have to select “Advanced Voltage Control” and then would see this option as “NB Core/PCI-E Voltage” (see Figure 20) or “NB to PCIE VGA Voltage” (see Figure 21).

PCI Express Voltage
click to enlarge
Figure 20:  Option for increasing the PCI Express x16 voltage.

PCI Express Voltage
click to enlarge
Figure 21: Option for increasing the PCI Express x16 voltage.

As you may have noticed, the exact name of each option varies a lot, and we tried to give some examples, but of course it is impossible to cover all motherboard models available at the market and tell you how each option will be called on your motherboard in particular. We hope that with our examples you at least got a clue on how to identify these options.

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