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5GHz and Beyond! - The Quest for a Stable Overclock - Page 2

post #11 of 45
80-85max while stressing and under 1.520v max..
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Red X9
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post #12 of 45
Thread Starter 
Quote:
Originally Posted by Hambone07si View Post
80-85max while stressing and under 1.520v max..
That's more or less what I've settled on.
post #13 of 45
I have that same water block on my tech bench right now with my 2500k running 5ghz 1.400v load with offset 1.060v idle. I picked up this ASRock Extreme4 Gen3 just to try out and got 5ghz but this board doesn't play as nice as the Asus's do trying for 5ghz. Here's prime blend load temps for 10min or so.

Red X9
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Red X9
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4790K @ 5ghz 1.350v 75c max load temps Asus Maximus VI Formula Evga Gtx Titan X @ 1500mhz / 7800mhz +112mv EK Acetal / Nickel / Nickel back plate 
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post #14 of 45
Thread Starter 
Ok, I've got a couple questions now:

As far as the C states, etc, does it really matter if I have them enabled? Based on what I've read in the 124 thread, it say you "must" have then enabled and they don't effect stability for manual voltage, so I set them to enabled. But you are saying that they can cause 124 BSODs?

How likely is it that OS or software can cause 124 BSODs? I just noticed that, in my resent restarts, uTorrent doesn't start up automatically any more. When I looked at its settings, the "start with Windows" box was disabled. I mean, this could have just been a fluke, but is it possible I'm getting OS/software corruption? I mean, I have no problem reinstalling Windows (it's not like I put a whole lot of time into the setup, and only installed a few basic programs), but if this could be causing me to artificially interpret an unstable OC when it is actually stable, then I'd be worried.

Also, I never ran a "stock" p95 test before I started OCing (I didn't even think of it, to be honest). Should I reset back to default settings and see if I can run it for a while? I did check the memory using memtest for 24+ hours at stock before installing the OS, though (if that matters).

Current Status:

I got lazy going through all the VCCIO for now, so I'm trying 1.47V w/ 1.1625 VCCIO and 1.7 PLL (based on your recommendation). I'm currently at 20mins, and I usually last between 1 and 5 hours on 1.47V, so we'll see what happens.
post #15 of 45
See what happens. Most likely it was cuz the Vccio being low. 1.150v failed and 1.175v passed 15hrs blend.
Red X9
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Corsair Vengence Pro 32gig 2400mhz c11 red (4x8... 6x 256gig (1.5tb) in Raid 0 , OS / Gaming Drive 2 x Liteon 256gig (512gig) storage drives Asus Dvd-RW 
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2x 360mm Alphacool XT45 / 1x 480mm Alphacool Mo... EK X-Res 140 D5 vario Pump/Res combo + EK X-top... EK Supreme HF cpu / EK Acetal / Nickel with Nic... Windows 8.1 64bit 
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Red X9
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RAMHard DriveHard DriveOptical Drive
Corsair Vengence Pro 32gig 2400mhz c11 red (4x8... 6x 256gig (1.5tb) in Raid 0 , OS / Gaming Drive 2 x Liteon 256gig (512gig) storage drives Asus Dvd-RW 
CoolingCoolingCoolingOS
2x 360mm Alphacool XT45 / 1x 480mm Alphacool Mo... EK X-Res 140 D5 vario Pump/Res combo + EK X-top... EK Supreme HF cpu / EK Acetal / Nickel with Nic... Windows 8.1 64bit 
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post #16 of 45
Thread Starter 
Quote:
Originally Posted by Hambone07si View Post
See what happens. Most likely it was cuz the Vccio being low. 1.150v failed and 1.175v passed 15hrs blend.
Is that from your experience? I don't mean to be dense, just checking.
post #17 of 45
Nick as soon as I saw your table I got good idea of where your going wrong...PLL Voltage

Its set to auto. Set that to 1.80 and try your overclock again. Now heres the hard/boring part, be prepared to go down an INCREMENT at a time until your at 1.5/1.6v.

9/10 my overclock fails with 124 bsod and its down to PLL voltage, either being too high or too low can make it bsod.

Also VCCIO generally is ok to be left at Auto, or 1.15v is fine. I set mine to 1.15 to keep it within 0.5v of my ram voltage (ram is 1.65, vccio is 1.15v). That is usually recommended when overclocking on sandy bridge, however due to the fact that alot of people use ram rated at 1.50v, you generally do not need to set vccio voltage manually.
Edited by $ilent - 10/30/11 at 6:33pm
post #18 of 45
Quote:
Originally Posted by $ilent View Post
I set mine to 1.15 to keep it within 0.5v of my ram voltage (ram is 1.65, vccio is 1.15v). That is usually recommended when overclocking on sandy bridge, however due to the fact that alot of people use ram rated at 1.50v, you generally do not need to set vccio voltage manually.
You don't have keep QPI/VTT within 0.5v of DRAM voltage, sandybridge is different
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post #19 of 45
Quote:
Originally Posted by munaim1 View Post
You don't have keep QPI/VTT within 0.5v of DRAM voltage, sandybridge is different
I know, im just pointing out something else when speaking about vccio. Im fairly confident his problem is down to PLL voltage.

Also OP I notied that you havent overclocked up to 5ghz, your just going for it. This isnt a bash at you, but its so much easier to start from stock and work your way up then. The way I see it, by going right to the 5ghz clock speed you could end up being lost for ages working out problems that you could have detected and been able to correct if you had worked your way up from stock.

Anyhow, if you need more info check out the 2600k overclocking thread in my sig
post #20 of 45
Thread Starter 
Quote:
Originally Posted by $ilent View Post
I know, im just pointing out something else when speaking about vccio. Im fairly confident his problem is down to PLL voltage.

Also OP I notied that you havent overclocked up to 5ghz, your just going for it. This isnt a bash at you, but its so much easier to start from stock and work your way up then. The way I see it, by going right to the 5ghz clock speed you could end up being lost for ages working out problems that you could have detected and been able to correct if you had worked your way up from stock.

Anyhow, if you need more info check out the 2600k overclocking thread in my sig
Thank you so much for your help. I'm still going on my current setup (1hr strong at 1.47 vcore, 1.1625 VCCIO, 1.7 PLL), and I'll definitely be back here, either with good news or not if I BSOD.

I do have a question about your approach to OCing, since I'm not sure if this is a philosophical one, or a substantive one. In my experience with 755, it really didn't matter if I "worked my way up" to my final OC. I found that I ended up wasting a lot of time on P95 runs that were fairly useless in the long run. Even if I stabilized the CPU at one frequency, I found that I had to run through all the iterative checks again for the next frequency because the variable interplay was so complex. Am I missing something, or is SB actually not as complex as before, so VCCIO and PLL voltages, once stabilized at lower frequencies, are fairly good indicators of the VCCIO and PLL voltages at higher frequencies?

EDIT: more questions

Something I've noticed is that certain P95 workers sometimes fall way behind or get way ahead of everyone else (like by two or three tests). Is this just a fluke in P95, or does this point to a deeper issue?

Also, I've noticed that when I set manual voltages, the BIOS shows that the "current" voltage is one or two notches above the set voltage. Is this normal?

As always, that you all so much for your help. I could never have gotten to where I am without you all at OCN!

EDIT 2:

My current run just BSODed after 1.5 hours. Now its time for PLL voltage iterating!
Edited by Nick2253 - 10/30/11 at 7:32pm
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