Measuring multi-core processor performance

A client recently came to me with a Gateway GT5082 whose drive he had reformatted and on which he had reinstalled Windows (XP MCE 2005). He told me that since he had reinstalled the OS his dual-core AMD processor was not functioning properly. One core, he said, was functioning at 1/4th the rate of the other and he wanted me to correct this condition. Based upon his description, I could not determine how he came to this conclusion.

I discovered that he had not installed the latest drivers; the system was running on the drivers loaded by the WXP install process. I downloaded and installed the latest drivers, including a recently-updated AMD processor driver.

The system seems to function well and, when I open the 'Performance' panel in the Task Manager, performance graphs for both cores are displayed and the activity of the cores appears to have relative parity (with some variation, of course, as each core handles its tasks).

In an effort to assure my client that the system is functioning properly, I also downloaded CPU-Z and Scannow's 'CPU Monitor v2'.

CPU-Z shows that there are 2 cores (and 2 threads) but does not, of course, display much information as to performance, core-usage, etc. Neither does 'perfmon', which I also tried but which does not display core-by-core activity or stats. CPU Monitor v2 shows relatively even CPU activity and performance for both cores.

Is there a utility that will show usage and performance on a core-by-core basis in a more detailed way than the 'Performance' panel? Does my client have any cause for concern?

Thanks for your time and energy!
cscadminAsked:
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AustinComputerLabsCommented:
I am not sure if this will give the exact detail you are looking for, but it is an industry standard.

PassMark has a free 30 day trial after that $24.
http://www.passmark.com/products/pt.htm 
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cscadminAuthor Commented:
Thanks! I'll try this right away.
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cscadminAuthor Commented:
Thanks for that tip.

I downloaded, installed and ran this app. It is actually very good and I'm going to check out purchasing a copy for the shop.

I don't see any option, though, for displaying the performance for each core. I've checked the preferences, menus  and options but I don't see any way to display this information. Is there a way to do so?

Thanks again.
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cscadminAuthor Commented:
I have done some further research but can still find no software that shows core-by-core speed and performance and am forced to accept that there may not be such an app.

I appreciate AustinComputing's suggestion and would like to award partial points for it but I don't want to 'accept it as a solution', as it really isn't one (not for this particular question, anyway). As there is only one suggestion, I can't award multiple suggestions either.

What should I do in this sort of situation?
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AustinComputerLabsCommented:
You can accept your last comment as the solution and one of the answers by us as an assist and give as many points for the assist as you think is right.
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cscadminAuthor Commented:
Thanks, Austin, and thanks for the advice. I do appreciate it!
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AustinComputerLabsCommented:
Sounds fair to me.
Thanks,

Rick
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cscadminAuthor Commented:
The partial award of points is simply that there seems to be no tool that addresses my query. AustinComputer got me as close as possible, though, and I appreciate it.
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