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The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 34

post #331 of 713
Quote:
Originally Posted by Sin0822 View Post
yea batch number means nothing, so does stock VID, really meaning less compared to clocks. I have seen many batches in where the max OCes at 400-500mhz apart.
The one I tried last night can only boot up w/o issues upto x48 @ 1.500vcore and PLL off. Probably a bad clocker?
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post #332 of 713
Quote:
Originally Posted by EarlZ View Post
The one I tried last night can only boot up w/o issues upto x48 @ 1.500vcore and PLL off. Probably a bad clocker?
Ouch, 1.5V for 4.8GHz is horrible. Is that manually voltage or auto? I can get my 2600K stable at 4.8GHz at 1.32V.
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post #333 of 713
Sin0822 advised me on running the chips at 1.500vcore PLL off and all other settings in auto, to find out which is the better 2600K.. I currently have 2pcs here and Im figuring out which one to keep.

Your 1.32v is windows loaded? How are the other voltages set?
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post #334 of 713
Quote:
Originally Posted by EarlZ View Post
Sin0822 advised me on running the chips at 1.500vcore PLL off and all other settings in auto, to find out which is the better 2600K.. I currently have 2pcs here and Im figuring out which one to keep.

Your 1.32v is windows loaded? How are the other voltages set?
He was just saying use 1.5V Vcore to find out which chip would boot with the highest multiplier with PLL Overvoltage disabled. Which ever chip booted the highest at 1.5V, you should keep.

I wouldn't recommend running the chip at that voltage. See back a few pages for Sin's recommend max voltages for an idea on what you should shoot for.

My 4.8GHz 1.32V is 12H prime95 blend stable and 50x LinX AVX stable.

After using Sin's method to finding which chip to keep, now you need to dial in your overclock.
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post #335 of 713
Thats what I actually did just boot into bios with 1.5vcore with PLL overvoltage off. Im now trying chip B and it can boot up x50 to bios vs x48 on the other one.

I tried 4.8Ghz now with voltage set to 1.380 manual I get the 124 BSOD error code, I upped the VTT to 1.1 and it freezes on the windows loading animation.

Do you have PLL overvoltage on that 4.8 , what VTT are you using?

Also Im just going what what he posted on these:

Quote:
Stock-4GHz on Stock VID
4.0-4.3GHz 1.300v-1.325v
4.3-4.5GHz 1.325v-1.375v
4.5-4.8GHz 1.375v-1.450v
Pretty nice chip for 1.32 at 4.8Ghz, either im doing something wrong or this is just a bad clocker.

EDIT:

Chip B seems to ultimate fail at all auto even at 4.5Ghz.
Edited by EarlZ - 5/4/11 at 10:19pm
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post #336 of 713
Quote:
Originally Posted by EarlZ View Post
Thats what I actually did just boot into bios with 1.5vcore with PLL overvoltage off. Im now trying chip B and it can boot up x50 to bios vs x48 on the other one.

I tried 4.8Ghz now with voltage set to 1.380 manual I get the 124 BSOD error code, I upped the VTT to 1.1 and it freezes on the windows loading animation.

Do you have PLL overvoltage on that 4.8 , what VTT are you using?

Also Im just going what what he posted on these:



Pretty nice chip for 1.32 at 4.8Ghz, either im doing something wrong or this is just a bad clocker.
Sorry, I reacted to your post without knowing the full story. Yeah, 48x isn't terrible. 50x is better of course.

The chip I currently have either maxes out at 48-49x with PLL Overvoltage disabled, can't remember. The chip I previously had maxed out at 51x. Previous chip did 4.8GHz at 1.37V while my current chip does 4.8GHz at 1.32V. However, my current chip runs hotter even though it's a lower voltage.

I keep PLL Overvoltage disabled. I use Vcore 1.335V in Bios with LLC on Ultra High on my Asus board. My personal goal for LLC settings is to use the highest setting which keeps your load voltage below your bios voltage. If you only have on/off then on is preferred. VCCIO (aka QPI/VTT) is default at 1.05V. VCCSA is default at 0.0925V. RAM is default at 1.5V. CPU PLL voltage is 1.7625V. Lowering CPU PLL voltage from default of 1.8V allowed me to lower my Vcore from 1.365V to 1.335V.
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post #337 of 713
I seem to be getting errors from Prime95 on all auto settings at 4.5Ghz.... Im not sure whats wrong..

EDIT:

Arggh I dunno, I was able to get 4.5Ghz stable and now it errors out again when prime starts!
Must be a mobo or bios issue?

My cpu really wants LLC now its running stable again, does realtemp 3.67 show realtime voltages?

EDIT2:

Im a little bit confused about the Voltage read outs, if I go x45 the bios gives me a 1.360 read out even if I set it to 1.335v, RealTemp also shows me 1.3671v
Edited by EarlZ - 5/5/11 at 2:50am
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post #338 of 713
Quote:
Originally Posted by EarlZ View Post
I seem to be getting errors from Prime95 on all auto settings at 4.5Ghz.... Im not sure whats wrong..

EDIT:

Arggh I dunno, I was able to get 4.5Ghz stable and now it errors out again when prime starts!
Must be a mobo or bios issue?

My cpu really wants LLC now its running stable again, does realtemp 3.67 show realtime voltages?

EDIT2:

Im a little bit confused about the Voltage read outs, if I go x45 the bios gives me a 1.360 read out even if I set it to 1.335v, RealTemp also shows me 1.3671v
Latest CPU-Z should give you accurate voltage readings: ftp://ftp.cpuid.com/cpu-z/cpu-z_1.57.1-setup-en.exe
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post #339 of 713
Thanks, Seems like 4.5Ghz on this chip is 1.285v to get stability with 1.1VTT. I think ill stay with 4.5Ghz as 4.8Ghz is a bit of a pain to stabilize and I dont know whats causing it to error out right away in Prime95 smallFTT.
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post #340 of 713
Hey Sin. I have been using your guide for a day now, trying to stabilize my 2600k on my ud5. Thought I had it figured out last night, but nah... prime 95 crashed during the night.

What I find strange is that llc level 1 seems to actually make my "load voltages" go lower than usual. Having level 1 enabled I have had a really bad day so far and have experienced quite a few crashes. However, after disabling llc I am back in the game and can continue with finding the golden spot

I have manually set my cpu voltage at 1.370. Cpu-z now reads my load voltages at 1.296v, sometimes 1.284v, while with llc it went lower than that. I guess using llc level 2 isnt really a good idea in my situation?

Is this extra vdroop with llc enabled logical at all?

My aim is to get 4.5 ghz up and running without worrying levels of temps (stay under 80c, right?). My true extreme does a less than perfect job in cooling my cpu (same with the last q9550) but it maxes out at 71c so far in my current prime run. I dont think my chip is the best of clockers either, but as long as I can use 4.5 ghz, judging from the results I got in certain cpu heavy games last night, I will be more than pleased.

Edit: EarlZ: Is that 1.285v on load? Generally, are you guys referring to load voltages, not "bios settings"?

Edit2: Oh, and I got HT enabled.
Edited by Chris Ihao - 5/5/11 at 9:04am
    
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