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Originally Posted by Dilbert1234567
Although overclocking is generally safe, improperly overclocking can damage components, if you think there is no risk, you’re just kidding your self. if you take it nice and slow, with a good motherboard, RAM, cooling, etc, the risk is really low, however, in Chris H's case, his motherboard does not have the proper safety features, such as locking the PCI bus, or small increments for raising the FSB, Furthermore, he has an AMD xp 1800, with out physically altering the CPU itself, it can not have its multiplier changed from the standard 11.5.
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Which i have done with a pencil and a magnifying glass and got the core voltage up to around 2200mhz - roughly the same as a 2400+. It was fine, no components failed, the motherboard had been used to overclock another chip previously too.
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Originally Posted by Dilbert1234567
Going further to show the risk, by not having a method to lock the PCI bus to 33 MHz, by increasing the FSB to 166 MHz from 133 MHz (the smallest jump he can make) that increases the PCI bus to 41 MHz instead of the standard 33 MHz, in effect overclocking all device that resides on it, which is nearly all of them, so you are stressing everything beyond what they are designed for don’t forget that the AGP bus is on the PCI bus, and should be running at 66 MHz, but will be running at 82 MHz, if it is a 2x or 4x AGP slot, although the clock rate does not increase, the signals per clock do making a 4x AGP slot (my guess on what he has) would run effectively at 333 MHz instead of the standard effective rate of 266 MHz which can damage the card, theoretically, the system should halt before damage is caused, but safeties do fail.
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We aren't working with a lot of info here, rather than using the predefined settings, are you able to manually set them? I find it hard to believe that his motherboard would be setting everything higher across the board rather than just the cpu - ram interactions.
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Originally Posted by Dilbert1234567
Further more, you are flat wrong about why overvolting increases stability, its not due to more power going through, it has to do with the speed it can change between the high and low voltage that the transistors are expecting.
Here is a wonderful thread about overvolting to expand your knowledge:
http://www.ocforums.com/showthread.php?t=384756 |
I've had a fair bit of experience with vcores, i was putting it in easier terms to understand, since that's essentially what is happening - more voltage for the cpu and more stability.
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Originally Posted by Dilbert1234567
I’m not telling Chris H to never overclock, it’s a lot of fun, and as you said, and you learn a lot about the internals of a computer, however the system he wants to overclock is not overclockable.
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I think it might be a better idea to find out the type of mobo, the stepping on his chip and so on before making that judgment - my old asus mobo had the preset options as well as the user defined options.
Also, it's a free computer, what's wrong with thrashing the absolute shit out of it? I'd do it.