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Underclock/Overclock my 3930k - Page 2

post #11 of 22
Quote:
Originally Posted by iinversion View Post

They are not the same because as I mentioned above changing the BCLK(unless done on a strap) will change other frequencies I mentioned. Yes, they will reach the end result in terms of CPU clock, but any significant deviation from the BCLK strap will result in instability and is not recommended for 24/7 usage.


OP is trying to say that a 105(or whatever) BCLK will have more benefits than OC'ing with the multiplier regardless of what CPU clock ends up being.

+1 your right im talking about haswell that has strap OC older chip cant OC more than 105 with full stable system
   
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post #12 of 22
Quote:
Originally Posted by jasonkidd123 View Post

The game supports internal timing regarding the clock frequency of the Front Side Bus (FSB) / BCLK which is read and sent by the basic input / output system (BIOS). If someone overclocks this FSB / BCLK frequency with certain software, it differs from the actual frequency that is sent by the BIOS. This has an impact on the basic calculation of the game and makes you gain advantages from this.
That's why I'm saying the multiplier won't make a difference, while the BCLK will
How much of an advantage though? If it's only something like 5%, is it really worth the effort and possible risk? I once raised the BCLK on a MSI Z77 board to 105 MHz and when I replaced it with an X79 board I noticed that one of the capacitors near the north bridge was bulging. I think it was a result of the BCLK overclock and may have eventually caused damage.
post #13 of 22
Quote:
Originally Posted by jasonkidd123 View Post

The game supports internal timing regarding the clock frequency of the Front Side Bus (FSB) / BCLK which is read and sent by the basic input / output system (BIOS). If someone overclocks this FSB / BCLK frequency with certain software, it differs from the actual frequency that is sent by the BIOS. This has an impact on the basic calculation of the game and makes you gain advantages from this.
That's why I'm saying the multiplier won't make a difference, while the BCLK will

It sounds like an older system would be better then since you could obtain much higher FSB. Sandy Bridge and onwards BCLK is extremely limited and can cause problems with other parts of your system and is typically only changed for reaching high OC's or benching.
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post #14 of 22
Thread Starter 
Yes, even 5% makes an advantage. And i've done it for about 3 years with my 2600k and never had a problem.
I know there's risks, but I'm not gonna push it too much; I just want to raise it from about 96 to 101-103.
post #15 of 22
Quote:
Originally Posted by jasonkidd123 View Post

Yes, even 5% makes an advantage. And i've done it for about 3 years with my 2600k and never had a problem.
I know there's risks, but I'm not gonna push it too much; I just want to raise it from about 96 to 101-103.

Every chip is different and there is no guarantee it will hit a certain BCLK.
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post #16 of 22
What game are you referring to? I have modified the baseclock on my 3930k and it did nothing but cause instability, threw my RAM timings out etc not really worth it in my opinion.
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post #17 of 22
Changing the BCLK while in Windows screws up the accuracy of the timers that some games use internally to calculate FPS, etc. If a game or benchmark program does not compensate for this timing error, it can do some funny things like randomly speed up parts of a game.

I wrote a program called WinTimerTester which lets a person test their timers.

WinTimerTester
https://drive.google.com/file/d/0B0dpSo9k93jDZlZ6NWNlV0RTcUU/view?usp=sharing
https://www.sendspace.com/file/xadvhe

It runs the two main timers in Windows and compares the two to see if they are running in sync. Normally these timers will run at a perfect 1.0000:1 ratio. When you change the BCLK in the bios, Windows is designed so that it will automatically correct and sync your timers as it boots up. If you use software and overclock the BCLK by 5% while in Windows, WinTimerTester will probably show a change in the ratio reported. This means your timers are out of sync.

As for your problem, you could try booting up at a reduced multiplier, adjust your BCLK while in Windows and then adjust your multiplier back up to the proper value. You might be able to do this using Intel XTU but you can definitely do this using ThrottleStop. It lets you adjust the multiplier down to 8 while in Windows. Changing the BCLK while the CPU is at only ~800 MHz might be easier on the CPU compared to changing the BCLK while the CPU is running at full speed.

You could also try using slightly more CPU core voltage. This might help avoid the CPU freezing up. Post some screenshots if you need any help with these programs.

ThrottleStop 8.00
https://drive.google.com/open?id=0B0dpSo9k93jDTE1fcHNtbUMwdGc
https://www.sendspace.com/file/b4oure
Edited by unclewebb - 7/13/15 at 9:03pm
post #18 of 22
Thread Starter 
Hey unclewebb, thanks for your answer
but if I boot the CPU with a ratio of 8, then raise BCLK, then raise the ratio back to 40-44, do I have have to change radically the voltage of something?
And will it damage the CPU to raise manually so much the multiplier?
Thanks
post #19 of 22
Intel designs their CPUs so the multiplier and voltage can change from the lowest to the highest values within a matter of microseconds. These changes happen so rapidly that monitoring software has an impossible time showing you what is really going on within a CPU. Using software to do this sort of speed switching manually is not going to hurt anything.

Best case, this fixes your problem and allows you to adjust the BCLK by 5%. Worst case, your CPU freezes up and you have to reboot just like it was doing before. No harm in trying.

Mr.Fox on NotebookReview has been using this program for years to fine tune his laptops. Here is a video he did using the most recent version if you need to know some more about this program.

https://www.youtube.com/watch?v=KRUfmPvaOzI
post #20 of 22
Thread Starter 
I checked the video, but I have no FIVD on my ThrottleStop 8.00. Plus, the BCLK button doesn't do anything.
I'll try another program to do what you told me and I'll give you news.
Thanks!
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