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Topic Title: !!!Solution Possibility For Users of 6400+/6000+ Processors Who Encounter Problems!!!
Topic Summary: Cool'n'Quiet problems and loss of performance for processors above 5000+ is dealt with here.
Created On: 07/27/2008 10:17 AM
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 07/27/2008 10:17 AM
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Pitchblack.Sphere
Junior Member

Posts: 7
Joined: 07/27/2008

Hey guys,

I´ve been stuck with a problem for quite some time now. Cool'n'Quiet wouldn´t work, I also encountered strong loss of performance and the CPU seemed to be interrupted in clean intervals.

If you have performance/C'n'Q problems on an AMD Athlon64 X2 Dual Core 6000+/6400+ or in some cases any other one above 5000+ model you may want to check out the following lines.

Let´s get to the topic

It loos like there are lots of problems with the 6400+ processor if you search the web. Also with a little slower processors of the same family as e.g. 6000+.

This is due to the fact, that many mainboards, even though they may be brand new are simply incompatible with this sort of processor, as they cannot support the performance it reaches by overheating at specific connecion-points. I was able to find something about this on the Mindfactory forum (German) and the stuff was mentioned there fits quite well to my trouble.

This overheating is what causes the CPU to be interrupted in clean intervalls or not to reach the estimated power at all.

Many companies on the web are selling computers where the cuomer is able to decide what parts he wants to be in his machine. However the combinations they present are not always to be combinated. An example for this is tecstore.net, which is a good site as for prices, but they don´t seem to check their machines properly as they present incompatible mainboard/processor combinations as an option.

Possible Solution for 6400+ processors or processors above 5000+

This solution maybe only a temporary one. Since there is a conflict between the processor (which is possibly to strong for the mainboard) and the mainboad itself you may want to underperform it, to at least have a stable system until you are able to replace parts if you are not content with the results.

I advise to underperform your machine.

First of all you should check if your mainboard is compatible with the CPU or not. You should do that on the mainboard-manufactorer´s website at their support section.

If you find out there is an incompatibility issue then set the processor to max. 2x2500Mhz alias 5000Mhz. To do that enter BIOS and check the section Frequency/Voltage Control and set the multiplier to 12,5, which is 2x2500Mhz.
Randomly it should have been set to Auto before.

Also remember to disable Cool'n'Quiet. The problem with C'n'Q is, that the processor may simply choose not t stop at the 2500Mhz/core limit and set each of the cores to 3200Mhz if performance is required. However if the mainboard is unable to stand that power at those connection-points you may receive an instable system with the result of crashing or freezing, where freezing should be rather possible.

If you are not willing to stay with a modded 5000+ machine you should look out for a new mainboard and check the compatibility first. To show an example, I have an MSI K9N Neo-F V3, which is pretty new and still not supporting that processor.


Possible solution of minor importance (1)

This solution deals especially with Cool'n'Quiet.

If you are encountering bluescreens while having C'n'Q enabled and have already stubled across a message that said "IRQL_NOT_LESS_OR_EQUAL" you may have stumbled across a corrupted Windows version. Such cases are rather often if you are a user of pirated software, extreme cases are such when your Windows installer also installs a bunch of different other software illegaly, such as Adobe software, Office software or advanced burning software (CloneDVD, Nero, Alcohol, etc etc etc).

There are also cases where a legal version of Windows is corrupted. However this is extremely rare.

"IRQL_NOT_LESS_OR_EQUAL" indicates a driver error, usually in the kernel area.
if you are used to see this with C'n'Q enabed, try installing another Windows version, importantly from another disc/another version of it.

If C'n'Q caused trouble due to corrupted drivers you should be able to solve this problem with a cleaner version of WinXP, for example you may want to try out a WinXP demo-version (legally).

Or check whether one of your hardware drivers is corrupted.


Possible solution of minor importance (2)

This solution deals especially with Cool'n'Quiet.

In some rather rare cases WLAN hardware causes interrupted CPUs as the frequency of the WLAN hardware may be disturbing the processors functionality.

To check that simply disable all the WLAN hardware (including no name WLAN keyboards/mice) and see with programs such as AMDClock.exe if your frequency remains stable or jumps like a crazy rabbit. Check that with C'n'Q being disabled.


I am hoping to have helped someone, make sure to read those texts carefully to prevent misunderstandings.


Moderators, you may want to change this into a sticky if you feel that this short guide may help some of the troubled users out there.

- Pitchblack.Sphere
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