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JohnZS: My friend burebista discovered something interesting when testing with SetFSB. The internal Windows timers that some benchmark programs use can get screwed up when you start overclocking.
http://www.hardwarecanucks.com/forum...tml#post383693
I don't think this problem applies to your QX9650 but after seeing that test, anything is possible.
When you use ThrottleStop to adjust your multiplier higher in Windows, on some motherboards, that might be changing timings within your chipset so memory bandwidth performance decreases. I haven't seen that problem when testing with a QX9650 on the older Intel P965 chipset. If the Windows timers are not being screwed up by adjusting the multiplier then I would have to assume it is a bug or limitation of the chipset you are using.
Can you post or send me a link John of a freely available benchmark program that shows this problem on your computer? I'd like to run that bench on my computer just to see if this problem can be isolated.
I think the reduction in memory performance that you measured earlier is real. Another user with a QX9300 mobile CPU which was on a board with an Nvidia chipset showed the same thing when ThrottleStop was used to increase the multiplier from within Windows. In his tests, the increase in CPU speed more than made up for any decrease in memory performance so overall benchmark performance increased even when memory performance decreased.
Edit: Here's a testing program I wrote to make sure the timers in your computer are running at the same speed when overclocking. If your internal timers get out of whack, some benchmark programs won't be reliable. The long term timer ratio reported by this program should be 1.0000
WinTimerTester
http://www.mediafire.com/?220h640tyxiwwpi

ThrottleStop 2.80
http://www.fileden.com/files/2008/3/...rottleStop.zip
http://www.mediafire.com/?89u0sctu15vn9g2
Last edited by unclewebb; 08-14-2010 at 10:14 AM.
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