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Getting my 2600k to 5GHz stable - Page 2

post #11 of 56
Have you enabled PLL overvoltage? its on auto by default which I THINK is disabled..

Have you set your vtt to 1.15 - 1.20? because you have 16gb ram?

Does your vcore droop at load or rise? Sorry but I dont have that board.
    
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post #12 of 56
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
28minutes? lol Not long enough to get a peak temperature reading.
The temp issue was mainly a side question. I run P95 for 30 mins because I crash

Quote:
Originally Posted by ttoadd.nz View Post
Have you enabled PLL overvoltage? its on auto by default which I THINK is disabled..

Have you set your vtt to 1.15 - 1.20? because you have 16gb ram?

Does your vcore droop at load or rise? Sorry but I dont have that board.

PLL ov is auto, so off I imagine. I'll try vtt at 1.15 asap. What exactly does that do?

Will answer your vcore droop/rise question shortly.
post #13 of 56
For 5ghz enable internal PLL overvoltage.
Edited by beetlespin - 7/27/11 at 3:41pm
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post #14 of 56
Thread Starter 
New bios settings:
Multi: 50
BCLK: 100
Internal PLL: On
Mem Frequency: Auto (1600)
Mem bandwidth booster: disabled
EPU power saving mode: disabled (enable this? I've heard power saving options help on SB)

Extreme OV: Disabled
vcore: 1.5
DRAM: 1.5 (stock)
VCCIO (VTT): 1.5625
CPU PLL: 1.7


VCore PWM mode: Extreme
VCore LLC: 75%
VRM Frequency: 350
Vcore Phase Control: 140%

Running P95 now.
post #15 of 56
Thread Starter 
Quote:
Originally Posted by ttoadd.nz View Post
Does your vcore droop at load or rise? Sorry but I dont have that board.
vcore droops at load. 1.504 idle to 1.488 during blend.

Could probably do with remounting my CPU block, cores 0 and 3 are 6-10c cooler than 1 and 2. Normal?
post #16 of 56
Thread Starter 
Crash 20 minutes in. Frozen screen, not a BSOD. Paying the price for giving in to lower prices on RAM recently maybe? Upped VCCIO 1 notch. Still on the fence about EPU power saving though.

This could be a RAM thing, right? Still fairly new to all this but if it was the CPU I would get a BSOD?

Going to reseat my cpu block in the morning too.
post #17 of 56
Leave your RAM at stock and concentrate on just the CPU, if it crashes it needs more vcore, simple as that, eror 101 is most definitely vcore and error 124 is also vcore but could also be RAM, but if you take ram to stock then it would need more vcore.
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post #18 of 56
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
Leave your RAM at stock and concentrate on just the CPU, if it crashes it needs more vcore, simple as that, eror 101 is most definitely vcore and error 124 is also vcore but could also be RAM, but if you take ram to stock then it would need more vcore.
RAM is at stock of course, but like I said, I am no longer actually BSOD'ing, the screen simply freezes... smells like RAM failure to me. Remember, I'm using 16gb, more dimms = potentially harder to OC CPU as far as I'm aware.

Tried EPU power saving last night and P95 actually shut down the PC Will be turning that off today when I try again.
post #19 of 56
Make sure you ENABLE Internal PLL Overvoltage. It's only supposed to be disabled for lower clocks, and its very possible that Auto = disabled because ASUS did that for another SB board. This would explain a little bit, it allows Vcore to reach higher levels I believe, so with it disabled you could put 1.5v and have it do absolutely nothing more than 1.45v. That's what I've heard at least, from a credible source, I just can't remember where.

Also lower CPU PLL to 1.7 like someone said, and try the highest LLC setting. I find LLC reduces voltage fluctuations for me at all loading levels, idle to full. I honestly really like the LLC setting.... I compared various settings and I don't see any good reason at all, at least for MY chip, to be using the lower settings.

Last thing would be to adjust BCLK manually.

1.5v is a lot though....... I think the max "safe" voltage is 1.38v, and 1.52 is where you can zap it, so be careful.

Quote:
Originally Posted by munaim1 View Post
If in everday usage nothing will get the temps higher than prime95 Custom blend with 90% or so of your available RAM then why on earth would you run IBT? I guess you could if you don't have time or your not that patient. It's been said countless times Prime blend is the best stability tester for sandy and can even stress it using some decent temps.

I personally would rather run 12hours of Prime blend and peak my temps at 70c rather than run IBT/LinX for 50/100 runs which might take 30mins I don't know and allow my temps to go to 85c.

Just my two cents
Yeah, I feel the same about the AVX thing. It's incredibly unrealistic. For me its about 15C higher, and I haven't been able to get my temps anywhere near those numbers normally. Prime95 appears to me to be a pretty accurate indication of my max temps which I really like, but, its pretty slow. Maybe you guys are used to it I dont know. I know overclocking involves a lot of patience, and I have been, but 24hrs is a little on the slow side. (side note: is 12 hours really sufficient when I keep hearing its necessary to do 24 because P95 often catches errors in the 20th hour?)

Is OCCT reliable for short durations (like 2-4 hr runs on max stress/threading)?
    
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post #20 of 56
Thread Starter 
Quote:
Originally Posted by donkrx View Post
Make sure you ENABLE Internal PLL Overvoltage.
Done already

Quote:
Originally Posted by donkrx View Post
Also lower CPU PLL to 1.7 like someone said, and try the highest LLC setting.
Also already done

Quote:
Originally Posted by donkrx View Post
Last thing would be to adjust BCLK manually.
What do you mean by this? 'Manually' set it to 100? It already is if so.

1.5v isn't ideal I agree, if I can't get 5GHz at 1.5 then there's not much point in pushing it further to try and get it stable. I'm not willing to go over that voltage. I have a feeling it's possible and I'm just missing something, like I mentioned earlier I'm not even BSOD'ing anymore.. just freezes up. Left it frozen for like 15 minutes at one point 'just in case' heh. No BSOD.

Couple more questions;
What is a safe VCCIO max?
And would underclocking my RAM to 1333MHz help CPU OC stability?(temporarily while trying to get it stable)
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