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Intel 3570k bus speed (fsb) fluctuating - Page 2

post #11 of 16
Thread Starter 
I have Windows 8 pro and power plan is set to balanced. Processor power management > system cooling policy is Activated but anything else is power safe is disabled.
Just now when i opened the computer (before i shut down it normally) cpu core speed is correct > about 4300Mhz
See image below:
post #12 of 16
Please wait for somebody else, I have no idea what to call this frown.gif
     
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CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.5Ghz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1450/1900 Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveCooling
WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 120.5 Custom Loop 
OSMonitorKeyboardPower
Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) Corsair AX Series 850w 
CaseMouseAudio
NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
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post #13 of 16
Thread Starter 
Yep thanks.
post #14 of 16
Thread Starter 
Anyone?
post #15 of 16
Bump
post #16 of 16
Monitoring software uses different Windows timers to calculate the MHz. When overclocking the BCLK in Windows, these timers can get out of sync so the high performance timer might not be accurate. You can try running

WinTimerTester 1.1
http://www.mediafire.com/download/xzo9n84d8lze9nb/WinTimerTester_1.1.zip

Let it run for about 100 seconds and it should show both of your timers running at the exact same pace. If there is a problem, post your results.

You can change what source Windows uses for its high performance timer function. Open up a command window and enter this line.

bcdedit /set useplatformclock true

You will need to reboot to get Windows to switch to a different timer.

If you want to go back to the original timer that Windows uses then open up a new command window and enter this.

bcdedit /deletevalue useplatformclock

You won't hurt anything trying a different timer. The alternate timer is based on a chip that runs at a fixed frequency of exactly 14.31818 MHz. I prefer using this timer since it runs at the exact same speed even if you adjust the BCLK in Windows. The latest version of CPU-Z seems very accurate at calculating the BCLK. RealTemp is overdue for an update and Windows 8 is a work in progress.

Edit: Here's a couple of examples of what WinTimerTest shows; first when your timers are broken and the second picture is after Windows was switched to the 14.31818 MHz timer.

http://img202.imageshack.us/img202/3778/timerbroken.png

http://img96.imageshack.us/img96/8417/timerfix.png
Edited by unclewebb - 12/1/13 at 2:12pm
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