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Haswell Overclocking Guide [With Statistics] - Page 217

post #2161 of 19540
Quote:
Originally Posted by Spritanium View Post

So I've heard that a lot of chips have a certain point at which they hit a "wall" and cannot go any further without significantly more vcore.

Is it possible for a chip to reach much higher clocks after said wall has been passed?

For example, say a chip will run at 4.1ghz with 1.20v, but won't get to 4.2ghz until 1.35v. Is it possible that said chip would be able to get to 4.3 or 4.4 at slightly higher voltages than 1.35?

Just trying to figure out if delidding is even worth it. If I can get manageable temps at 1.4v, I might actually get a decent overclock.

They can keep going past that wall, but the heavy voltage increases also bring on the heat. Delidding can help the temps, it's hard to predict the possible clock gain though.
    
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post #2162 of 19540
Thread Starter 
Quote:
Originally Posted by Spritanium View Post

So I've heard that a lot of chips have a certain point at which they hit a "wall" and cannot go any further without significantly more vcore.

Is it possible for a chip to reach much higher clocks after said wall has been passed?

For example, say a chip will run at 4.1ghz with 1.20v, but won't get to 4.2ghz until 1.35v. Is it possible that said chip would be able to get to 4.3 or 4.4 at slightly higher voltages than 1.35?

Just trying to figure out if delidding is even worth it. If I can get manageable temps at 1.4v, I might actually get a decent overclock.

 

Maybe 200mhz. Depends on how ballsy you are and how good cooling.

For me 4.5 1.28v. 4.6 1.425v. 4.7 = god knows what volts. If I really didn't care about losing my CPU sure I can maybe stabilize at say, 1.6v. Maybe not, I imagine the wall gets much worse after each multiplier. So you hit the wall expect to just get past the wall. Only the most hardcore can get 2 notches higher for the multiplier despite the wall.

 

I tried 1.5v+ for 4.7, nothing resembled a good stability. Things would crash within 15 minutes. Christ, even for 4.6 I'm having some issues with stability, the phantom 9c error is upon me today.

 

 

Then again today is hot. Forecast predicts 90F degree weather all week long.

Just kill me now.

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post #2163 of 19540
Quote:
Originally Posted by The Storm View Post

I am not a fan of aida64, i could test for hours on end with this but crash in seconds on occt or prime. With aida i could clock up to 4.6 and pass stress for long periods of time, with occt I struggle to get 4.4 stable.

Same here, Aida64 takes much longer to bluescreen than other tools.
Quote:
Originally Posted by Spritanium View Post

So I've heard that a lot of chips have a certain point at which they hit a "wall" and cannot go any further without significantly more vcore.

Is it possible for a chip to reach much higher clocks after said wall has been passed?

For example, say a chip will run at 4.1ghz with 1.20v, but won't get to 4.2ghz until 1.35v. Is it possible that said chip would be able to get to 4.3 or 4.4 at slightly higher voltages than 1.35?

Just trying to figure out if delidding is even worth it. If I can get manageable temps at 1.4v, I might actually get a decent overclock.

Everything I've seen so far indicates it's exponential, so the next stop after 1.35v would be 1.45-1.5v. You could try messing with the base clock or straps to hit an intermediate clock frequency to work with 1.4v.

Unrelated to the above, I tried to save some core voltage by dropping my cache ratio from 45x down to 39x, but it bluescreens just the same. So I can choose between 4.8GHz with adaptive at 1.34v, and 4.7GHz at adaptive 1.265v. Both with the cache at 8x-45x at 1.275v adaptive.

Also possibly of interest, 4.9GHz requires 1.35v minimum to boot, and 5.0GHz requires 1.41. That kinda gives you an idea of how fast the voltage requirement goes up. Probably add +0.1v to actually be stable enough to benchmark at those.
post #2164 of 19540
Username:HemiRick
CPU Model:4770K
Core Multiplier: 47
CPU VID: 1.25
Vcore: 1.32 for a split second during XTU Benchmark, XTU stress and Folding is consistently 1.26 using adaptive
Uncore set at 40
Uncore Voltage:1.1
Cooling Solution:Thermalright True Spirit 140
Stability Test:XTU CPU stress 15 min. Folding 6 hrs so far
Batch Number: L313B329
Ram Speed:1600 XMP profile
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post #2165 of 19540
I am trying to get my head round this chip and board and vcore use under load and maybe one of you guys will know. I am using adaptive setting with a setting put in for example which was 1.25@4.4. I noticed under load it would take more so up to 1.3 during some stress tests. I have been reducing this vcore setting and testing, I have it set right down to 1.150 now but still takes 1.23 under prime load so I thought this must be llc, found llc set to auto which equates to level 8, set it lo level 1 manual and restarted test on getting up this morning and the vcore under load is still 1.23 lol, officially @confused
post #2166 of 19540
I have a question... I have MSI Z87 G45 and I set voltage in BIOS to override from adaptive, and my voltage still is dropping down, from set vcore in BIOS. Is that the way it should work?



As you can see, CPUZ shows vcore of 1.295 with 800mhz, so it is not dropping. But HWinfo and HWmonitor shows vcore 0.120 dropped from 1.32 set in BIOS.

I do not understand that at all... Is this should be at 1.32 all the time when set to override, right?

Also, there is SS from my BIOS settings:

Edited by BrX1991 - 9/8/13 at 3:46am
post #2167 of 19540
So I've started to overclock my 4670k with AIDA64 extreme edition. But how does the program respond, when it detects an error? Does it just stop the tests on itself? Or will there be some kind of error log?

I'm asking because I've now been running some quick tests. 1 hour stress cpu only, and 1 hour stress fpu only. And I didnt notice any kind of instability signs anywhere?
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post #2168 of 19540
Quote:
Originally Posted by wendigo4700 View Post

So I've started to overclock my 4670k with AIDA64 extreme edition. But how does the program respond, when it detects an error? Does it just stop the tests on itself? Or will there be some kind of error log?

I'm asking because I've now been running some quick tests. 1 hour stress cpu only, and 1 hour stress fpu only. And I didnt notice any kind of instability signs anywhere?
BSOD (Usually Core related), lockups (usually Uncore related), reboots without BSODs (usually Input Voltage related).

on another note. i just HAD to try Prime 95 28.1 beta with AVX2 and FMA3 support. I said I gave up stress testing. But I was COMPELLED TO DISOBEY! haha

I only ran the inplace Large FFT tests because small FFT tests would bring the temps almost to 100C at least on one core. i didn't want to run Small FFT tests long enough. since this would hard core, I didn't think running it for more than 2 hours would make sense. however, I had to increase the Vcore from 1.24V to 1.25V to pass 30min mark.
Warning: Spoiler! (Click to show)

guess you better update it with these settings Darkwizzie (1.24V -> 1.25V and OCCT 4.4 6hrs + Prime95 28.1 2hrs). They should be "more stable" than the OCCT 6Hrs run.
post #2169 of 19540
4770k @ 4.6 , 1.300v wc ,maximus vi hero !! temp ?? thumb.gif

http://i.imgur.com/32Hbata.jpg

post #2170 of 19540
Just a reminder to people with adaptive, don't stress your machine with adaptive.
It's been said before even by JJ from ASUS, when using adaptive it can draw way more voltage then it actually needs when necessary.
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