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[Info] - Intel 2500k/2600k Overclocking Tips - Page 66

post #651 of 1151
Quote:
Originally Posted by jezzer View Post

Hey guys, i got a new CPU 2700k and new MB MSI Z77 GD65 GAMING

I had no problem oveclocking my 2500k on Sabertooth P68 mobo to 4.8ghz with all c states intact.

With my new mobo and cpu i seem to have some problems.

I am not even getting to the point to find a stable point with vcore and stuff because what ever i do and run prime95 multiplier lowers itself to standard setting x40, then goes to 41, 40, 41, 40.

Its not a temp issue and i cannot find a setting in the MSI bios that could cause this.

Anyone has experienced this and maybe also has a OC genie II MSI mobo? Settings are so different from solid asus boards..

I am so missing my p68 board now but had to upgrade because it did not support 2 x 3 slot videocards.

Hope you find the answer but sounds like one of the power saver features is kicking in. Figure its worth the bump in me saying that thumb.gif
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post #652 of 1151
I managed to fix it, was giving cpu to less watt wink.gif
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post #653 of 1151
I got myself a macho 120 and trying to overclock. I think I have this setup as stable now. Are those settings correct? (Running prime for 30minutes so far 70C max at one point.

asrock p67 pro3 settings:
Everything basically at default settings
only changed muliplier and vcore to offset
x47 with +0.060v.

During prime my vcore is 1,352-1,360.

Is that good or too low vcore? Can too low but stable vcore make performance lower than it should be?
And btw. I cannot seem to get past win7 loading screen with anything above 3.7 No matter what offset.
I dont know much about sb and p67 oc
Edited by HiCZoK - 6/12/13 at 2:21pm
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post #654 of 1151
Quote:
Originally Posted by HiCZoK View Post

I got myself a macho 120 and trying to overclock. I think I have this setup as stable now. Are those settings correct? (Running prime for 30minutes so far 70C max at one point.

asrock p67 pro3 settings:
Everything basically at default settings
only changed muliplier and vcore to offset
x47 with +0.060v.

During prime my vcore is 1,352-1,360.

Is that good or too low vcore? Can too low but stable vcore make performance lower than it should be?
And btw. I cannot seem to get past win7 loading screen with anything above 3.7 No matter what offset.
I dont know much about sb and p67 oc

Personally I dont use offset when determining stability. Turn that off and set the speed manually. Voltage seems in the ballpark but your could need more or you can get away with less. Just switch it to manual for now and determine what you really need because cpu offset can be screwy if you have no idea what your cpu really needs for stability. Just my .02cents
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post #655 of 1151
I used this guide cause I trusted this guide. redface.gif

A few things to note about sandy bridge overclocking...

1) Voltages are so confusing. I can't seem to trust the BIOS cause I don't know how much load is on the processor in offset mode! I can't trust manual mode/auto or offset mode/auto cause they both shoot the voltage up to 1.47 under load when I have LLC at Ultra! I finally figure out that LLC @ ultra and offset +0.005 provides the best voltage ranges. (1.368v @ max load (Intel burn test) 1.36v while gaming and 0.960v @ idle) for a 4.5Ghz overclock. I wasted a lot of time on manual voltage to find my stable (1.352v @ max load) for 4.5Ghz when I could of just turned on offset mode +0.005v! I can't seem to boot with -0.005... Voltage is so wild and crazy and out of control on sandy bridge it seems. You need to have a really good understanding of how offset mode and speedstep/turbo works...

2) Stress testing! I do not have time to wait for stress testing or use P95 for days...so what I have been doing is running Intel burn (to get an idea of max temperatures and loading) test at default settings (10 runs) and trusting the (your oc is stable) message after every voltage and ratio change. Then after I found the stable voltage @ 45x ratio I went down my steam list and ran all available benchmark programs for the games I actually play! And I just USE my PC in every natural possible scenario... seems good enough for me.

3) I really wanted to understand scaling in games. Comparing the benchmarks to what I had before there seems to be a 5-10fps in most games from stock clocks and a few games only 2fps difference. This is underwhelming and makes me wonder if I should even bother overclocking.

FPS Difference between 2500K Stock and Overclocked.
Code:
FPS Difference between 2500K Stock and Overclocked to 4.5Ghz:

Crysis 1:                                                       4.90
Crysis 2:                               63.34/63.68             0.34
Grand Theft Auto IV:                    64.80/65.86             1.06
IL-2 Sturmovik: Cliffs Of Dover:        57/62.33                5.33
Metro 2033:                             59.49/61.40             1.91
Stalker: Call Of Pripyat:               109.60/118.14           8.54
BF3                                     103.39/105.47           2.08

4) Seems best to leave most BIOS settings at auto as the guide suggests and only turn things off when you run into trouble, the exception is the LLC, Phase control, duty control, current capability....

5) Current capability seems to be limited to %120 in my BIOS is it because my board had limited VRM?

6) I installed all the AI suite from the asus site but I find that good old fashioned BIOS, Core Temp, CPU-Z, and Intel burn test to be my favorite overclocking tools...Also all the auto tune and auto overclock bogus should never be touched...can't believe they waste their time adding useless and dangerous software to make it appear that their boards have more functionality. Marketing BS.
Edited by SIDWULF - 6/26/13 at 12:24am
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post #656 of 1151
Inaccurate voltages sounds like the board you have is pretty faulty or has poor monitoring components. Saying "all of sandy bridge" has "inaccurate voltages" is too broad to speak.
post #657 of 1151
Quote:
Originally Posted by Aesthethc View Post

Inaccurate voltages sounds like the board you have is pretty faulty or has poor monitoring components. Saying "all of sandy bridge" has "inaccurate voltages" is too broad to speak.

Hmm I meant just the way voltages are handled when you add in turbo and offset mode...and the implementation of LLC...it just skews and makes everything so messy.

There I changed my poor wording to..."confusing"..."messy"...you get what im saying...
Edited by SIDWULF - 6/26/13 at 12:27am
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post #658 of 1151
Thread Starter 
SIDWULF I included a quick explanation on the first post about offset voltage, essentially whatever you put in offset in either subtracted or added from your cpu's VID, which you can find using realtemp.

Soon as you know that you just need to go into windows and check your cpu voltage at idle and full load.
post #659 of 1151
Quote:
Originally Posted by $ilent View Post

SIDWULF I included a quick explanation on the first post about offset voltage, essentially whatever you put in offset in either subtracted or added from your cpu's VID, which you can find using realtemp.

Soon as you know that you just need to go into windows and check your cpu voltage at idle and full load.

1.4011v VID on Core Temp
1.384v at max load using intel burn test
1.344v Running games.

I have an offset of 0.020v set in my BIOS.

In this case what is the usefulness of knowing my VID? I had to guess the offset by starting at 0.005v and I found out it wasn't stable at that so I had to keep increasing voltage.
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Samsung S23A700D / 120Hz / 23" Dell 2312HM / IPS / 23" LG IPS231 / IPS / 23" CMStorm Quick Fire Rapid 
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post #660 of 1151
Quote:
Originally Posted by Aesthethc View Post

Inaccurate voltages sounds like the board you have is pretty faulty or has poor monitoring components. Saying "all of sandy bridge" has "inaccurate voltages" is too broad to speak.

I think voltage measurements vary, especially among mfrs. What is says is less important than that it says the same thing consistently.

If you have a good cooler installed properly & temps are high, so is voltage, regardless what the board says.
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