Overclocking PowerPC 750gx...

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   It has always been necessary for me to try to push my computers as far as their hardware will go. This usually starts off with trying to overclock the processor for me. There are usually two methods for doing this: overclocking the frontside bus, or upping the processor's multiplier.
   Firstly, increasing the speed of the frontside bus does generate better performance sometimes because it overclocks other components on the motherboard and not just the CPU. Of course, these other components might not react well to the overclock and might stymie one's efforts. Sadly, I've not heard good reports from overclocking the bus on a B&W G3, probably due to the Grackle chip.
   The only method left that I could use is upping the processors's multiplier to just increase its clock frequency. The chip I have in there now is only rated at 1GHz but runs fine at 1.1Ghz. 10% is a nice and modest overclock, it's not enough for me.
   That is why I intend to push my lowly G3 to 1.2GHz. The reason behind why I believe it will take the relatively small jump to 1.2GHz is that it seems to run fine for a while at this frequency. I've come to the conclusion that the heatsink that came with the B&W may be quite inadequate to handle the heat output of an overclocked 750gx. It does put out more heat than previous G3s.
   With this knowledge, I'm hoping to get a hold of a 1U socket A or 370 heatsink that will fit in the B&W's case. Until then...

3 Comments

cappy said:

aye, a larger heatsink made of gleaming, polished gold would be best. Copper will do if you can't find gold.

bubu said:

yay! pretty sparklies!

Thomas Mc. said:

I have ordered another socket A / 370 1u heatsink. The fan part of it won't fit, but the heatsink part will.

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This page contains a single entry by Thomas the Mighty published on June 17, 2006 4:22 PM.

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