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Old 09-15-2003, 05:45 AM   #1
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FSB speeds and processors


For testing puposes I need to run my friend's old Athlon 1GHz in my new Asus motherboard.
The problem is that I don't know what bus speeds the processor has. My motherboard has a jumper that can change between 200MHz and 266/333/400.

My question is this: is there any way of finding out what bus speed the processor uses, and if not - how do I plug it in without risking to break the processor or the motherboard?

If the processor runs at 266 and the mobo is set to 200, is it dangerous? or if the situation is the opposite?

Old 09-15-2003, 11:51 AM   #2
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I think the 1 GHz Ahtlon uses 200 mhz fsb; they didn't start using 266 till 1.3 ghz or something. If you use a greater fsb, then you'll overclock the processor, and it'll melt itself unless you cool it properly. AMD processors are multiplier locked, that is, unless you change a setting on the cpu, it'll multiply the fsb by a certain number to get it's clock speed (it'll probably try to do 1.3 ghz if you set the fsb to 266). Don't know about "underclocking" (lowering the fsb).
Old 09-15-2003, 11:55 AM   #3
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Try the chip's website: for info on their processors. The command in Linux "cat /proc/cpuinfo" will give some handy info, like the model, speed, onboard cache, and more. I don't think it gives the fsb.
Old 09-15-2003, 12:17 PM   #4
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I underclocked a AMD 2600 FSB 333 to about 2000 with FSB 266 one time until I saw that the Bios was setup wrong.Didn't damage anything.


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