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clock multiplier

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  • CPUs
  • Boot
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Anonymous
a b à CPUs
August 23, 2001 4:20:36 PM

how come i can change the frequency and not the clock multiplier? once i hit 140 mhz on the frequenccy the system wont boot, so how can i oc it?

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Anonymous
a b à CPUs
August 23, 2001 4:41:59 PM

You'll need to close the L1 bridges on the cpu then you can if your mother board supports it change the multiplyer on the motherboard.

Now if I don't own an athlon nor have I ever overclocked my CPU (K6-2 so it's a point pointless imho) and I havn't asked these questions before how do you think I know the answer?

Read before you ask and you will learn much more then if you ask before you read said some wise man to me once...

Your nice new PC might be faster then my 286, but my 286 makes a better door stop :smile:
August 23, 2001 4:46:40 PM

Some more info would be useful - such as system, mobo...

Anyway, if you're using a Tbird you may change the CPU default clock multiplier if the CPU is 'unlocked' (L1 bridges intact). Otherwise you can't (you can actually change it in the mobo BIOS, but the CPU will ignore it).

Your memory probably can't handle 140Mhz (or your CPU can't handle the new frequency with its default multiplier).


How terrible is wisdom when it brings no profit to the wise
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a c 159 à CPUs
August 23, 2001 11:40:19 PM

If you unlock the L1 bridges by penciling them in, then you can change your multiplier by doing the same thing to the L6 bridges, but choices are limited by the default setting. The L7 bridges can be used to change the voltage even if your motherboard can't. The settings are listed in one of Tom's early articles on overclocking the socket a cpu. You must be patient when trying this, and use a heatsink that is easy to remove and install, because I wouldn't start up your system without the heatsink installed for even a few seconds.
a b à CPUs
August 24, 2001 2:56:59 AM

Raise the core voltage to 1.85v. Raise the I/O voltage to 3.5v. Make sure you have good memory. Lower the Cas latency if necessary. Most AMD "C" chips can hit 150MHz at least. Some "B" chips can also. Knowing your manufacturing revision helps, an Axia or AYHJA can go higher than others.

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