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Overclocking the processor

If your computer comes with an Extreme Edition CPU, the CPU is “unlocked,” which means its clock speed (operating speed) can be increased (overclocked) beyond the default processor speed. Overclocking may result in system instability.

To change the clock speed of your processor:

1Turn off your computer and disconnect the power cord.

2Place your computer on its side with the side accesss panel facing up.

3Follow the anti-static precautions in “Preventing static electricity discharge” on page 50.

4Open the side panel and locate the jumper labeled J3C2 BIOS Config on the system board.

J3C2 BIOS Config jumper

J2B3 jumper (do not adjust)

5Remove the jumper from its normal position (bridging pins 1-2), then place it in the maintenance boot position (bridging pins 2-3).

6Reconnect the power cord.

7Turn on your computer. The BIOS Setup utility opens.

8Press the arrow keys to select the Performance tab. Press the arrow keys to highlight Set Processor Multiplier, then press ENTER.

9Press the - (minus) or + (plus) key repeatedly to adjust the multiplier, then press ENTER.

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