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[Info] - Intel 2500k/2600k Overclocking Tips - Page 83

post #821 of 1151
Quote:
Originally Posted by pc-illiterate View Post

but its possible it isnt bad ram. it might need more vdimm or might need more vccio. 4 dimm of ram is hard on a memory controller compared to 2 dimm.

Interesting. I'll have to give that a try. I do have 4 dimms.
post #822 of 1151
I might have to try upping the DIMM voltage to get my 4500MHz OC back. I though my last RAM was 2x4GB sticks, it was actually 4x2GB sticks of this stuff, and had no problem with 4500MHz with a +0.020 offset. Right now I'm running 4 sticks of this stuff.

Currently running 4300MHz with with a -0.010 offset and everything is fine. I'll play with it more later.
post #823 of 1151
First of all: Thanks for this awesome guide!

I set everything exactly like you said. First I tried a multiplier of 36 which ran fine with the 1.20v but when I increased the multiplier to 40 I had crashes with the 1792 prime test. I increased to 1.22 and still had a bsod. Now I increased to 1.23 and everything is fine and that leads me to some questions.

- What is a "Prime blend test" and how can I run it. Is just the normal torture test but longer than 20 mins?
- how much should I increase the voltage if my CPU is not stable? Is it ok to jump from 1.20 to 1.22 or should I try smaller steps first?
- After those two prime tests (1344 and 1792) I want to go higher than 4 Ghz but the guide only says "increase voltage and multiplier". Again, how much? Just jump to 1.25 and 43 multiplier or more carefully?
- Is 1.23 v while running on 4Ghz still good, average or is it not good? Temps are below 50 °C with my H100i running in quiet mode while ambient is 22.2

//edit

well, forget about that blend test question. Sometimes you just need to read before asking wink.gifredface.gif


//edit

11.5 hour blend test passed.
Edited by Amr0d - 1/11/14 at 2:30am
    
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post #824 of 1151
Well the stock voltage for the 2500k is 1.2V
Keep increasing the multiplier and up to voltage only if u get instabilities
Also Download INTEL EXTREME TUNING UTILITY THATS WHAT I USE FOR STRESS TEST (INTEL XTU)
I can do 4.5GHz at 1.29V
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post #825 of 1151
Is Prime95 not recommended anymore?
    
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post #826 of 1151
yes p95 is fine to test with. everyone has their own "its stable for me" level and testing.
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post #827 of 1151
Ok, now I have some problems. I raised voltage to 1.24 and multiplier to 41. Everything fine with the two tests (each over 20 minutes). Then I raised the voltage to 1.26 and multiplier to 43. When starting with the stress test computer reboots after two seconds of testing and now, after I set everything back to 1.23 and 40, I had like Orange-White stripes on screen when the computer tried to boot. Anything I can do about this?

The stripes are gone now, but I still want to know what the problem was?
Edited by Amr0d - 1/11/14 at 7:50am
    
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post #828 of 1151
dont raise the voltage until you need to. as far as the stripes, thats video output and would be purely the video card. it would have nothing to do with windows or your overclock, unless of course you were past post. you didnt give a full description for my sleeping brain to make heads or tails from it.
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post #829 of 1151
Ok, so always raise the multiplier and if it's crashing I need to raise the voltage aswell?
    
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post #830 of 1151
raise the multiplier until u get instability
Then when u find that u have instabilities raise the voltage by small steps for example from 1.23-1.24 not huge bumps
Also check the cpu temperature and don't go over 75 degrees Celsius
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