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Overclocking CPU issue 6600k

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#1 coreyd


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  • Local time:04:08 PM

Posted 01 June 2016 - 05:23 PM


MB: MSI z170a gaming M3

CPU: Intel i5 6600k

CPU: cooler: Corsair H100iGTX


Ram: 16 GB 2x8GB G Skill ddr4 (can get exact if needed)

PSU: EVGA SuperNOVA 650 G1 80+ GOLD, 650W Continuous Power, Fully Modular

Storage: 250 PNY CS1211 SSD, 1TB WD Blue HDD, 500 GB Seagate HDD


OS win 10 64bit


Hello, I am a bit new to overclocking and have some questions and I believe I have an issue. 


So I have been able to overclock my CPU to 4.7 GHz without  changing anything setting except for the clock speed I have not touched the voltage or any other setting except for enabling XMP and setting the ram o run at 3200 MHz.below is a screen cap of my OC settings.



As far as I can tell its running stable I have run prime 95 as well as some other CPU stress testing software, I get no crashes so the PC itself seems to run fine. Now where my issue comes in when I am running the CPU at max with prime 95 it jumps up to 4.7 like it should but does not stay there. it will bounce between 4.66 and 4.7. I tried dialing the OC back a bit but it does the same thing @ 4.5 is will bounce between 4.45 and 4.5.


First, off is this normal or should it run at 4.7 the whole time it's maxed out?

Is this a voltage issue?


Any help would be great. below are two more screen caps show the different clock speed. Both CPU-z and task manager bounce but they both show different 







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