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i7 3820 - 4820 Overclock Club - Page 135

post #1341 of 6510
Just found an awesome tool for overclocking - it's Excel!

Tried graphing my temps and voltages for various overclocks and have used that info to gradually home in on more-or-less linear graphs over a couple of late nights!

If anyone is interested, here are the results I'm getting:



Obviously the lines were a lot more jagged to begin with!

"Avg. Core Temp. is actually the average of all four cores under stress, while "Max." is the hottest core.

I've been using offset voltage for most of my tests.
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Dante
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post #1342 of 6510
Quote:
Originally Posted by BloodQuest View Post

Just found an awesome tool for overclocking - it's Excel!
Tried graphing my temps and voltages for various overclocks and have used that info to gradually home in on more-or-less linear graphs over a couple of late nights!
If anyone is interested, here are the results I'm getting:

Obviously the lines were a lot more jagged to begin with!
"Avg. Core Temp. is actually the average of all four cores under stress, while "Max." is the hottest core.
I've been using offset voltage for most of my tests.

Interesting, I didn't expect the voltage line to be so linear. +rep (and it was the first one. biggrin.gif )
post #1343 of 6510
Quote:
Originally Posted by Paradigm84 View Post

Interesting, I didn't expect the voltage line to be so linear. +rep (and it was the first one. biggrin.gif )

Thank you!

I wonder, though, if it wasn't almost a self-fulfilling phrophesy - when i found values that went above the trend line, I found myself working harder to find a working solution that brought it into line.

Does seem like it starts to go north at 4.8GHz though, and I'm wary of going much over 1.4V

I did have one scary moment - made a mistake on a decimal point in my offset and rebooted to buzzing and a CPU overvoltage warning - it was over 1.6V - I nearly wet myself!

Hit that BIOS reset button faster than you could imagine!
Dante
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Dante
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post #1344 of 6510
Quote:
Originally Posted by BloodQuest View Post

Thank you!
I wonder, though, if it wasn't almost a self-fulfilling phrophesy - when i found values that went above the trend line, I found myself working harder to find a working solution that brought it into line.
Does seem like it starts to go north at 4.8GHz though, and I'm wary of going much over 1.4V
I did have one scary moment - made a mistake on a decimal point in my offset and rebooted to buzzing and a CPU overvoltage warning - it was over 1.6V - I nearly wet myself!
Hit that BIOS reset button faster than you could imagine!

I would have thought it would just automatically shut down at so much voltage. tongue.gif

In situations like that I usually have my finger ready on the PSU power switch just in case. tongue.gif
post #1345 of 6510
After a few more tests I managed to get to 4.8GHz with under 1.4V - using an offset of +.385, but also had to change LLC to high.

It did also bring temps down pretty much in line with the graph's trend line. Actually shows 1.376V under load, and 1.384V idle, so I'm happy.

I'm running BIOS 1404 and have been hearing that at least some people have seen improvements with the newer BIOSes - 2105?

Any of this thread's veterans have any views on this (I learned a lot from you guys)?

I have no great desire to push beyond my current speed, so maybe I should just leave it alone?
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Dante
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post #1346 of 6510
thanks for the post.. i didnt even know there was a new bios... hahah...

guess i'll have to look into it.. i just hope nothing breaks because of it...
post #1347 of 6510
Pretty big noob here, so any help would be nice. Using a P9X79 Pro with 4x4GB of 1600mhz memory @ 9-9-9-24-2t/1.5v

4.625 was super easy, vcore to 1.315 and LLC to high [1.332 under load]. The typical 37x125mhz.
126w power consumption. Forgot the temps >.>


However, going any further is quite difficult.


4.75 is taking a vcore of 1.400 with LLC to Medium [1.400 under load + idle]. 38x125.
131-132w power consumption, 78c max [Avg max 73c]

Any higher is so far intangible with vcore and minor vccsa/vtt changes.

So my question(s) are:

Is spread spectrum control something I should be turning on or off? Currently it is OFF.

Are vcc/vtt/pll adjustments something that will help?

Should I attempt any bclk adjustments or is that a nono?

Thank you

Edit: Updating the motherboard bios allowed me to drop the voltage to 1.376. Anyone know how on Earth that makes sense?
Edited by Derpinheimer - 9/22/12 at 12:32am
post #1348 of 6510
I'm getting the feeling that I have done something seriously wrong with my overclock, could 1.4vcore for 4.625GHz really be right? I know there is variance between different chips but the difference between my overclock and others is more than I would expect.
post #1349 of 6510
Quote:
Originally Posted by Derpinheimer View Post

So my question(s) are:
Is spread spectrum control something I should be turning on or off? Currently it is OFF.
Quote:
Originally Posted by simonfredette View Post

anything that sounds like spread rectum should be disabled .. just saying

^This
 
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post #1350 of 6510
Quote:
Originally Posted by Paradigm84 View Post

I'm getting the feeling that I have done something seriously wrong with my overclock, could 1.4vcore for 4.625GHz really be right? I know there is variance between different chips but the difference between my overclock and others is more than I would expect.

Relax amigo. Not all chips are created equal. My 3820 is a booger to get to anything over 4.6 without pushing the voltage over 1.4 as well. It is what it is, that is a 1GHz OC afterall. Make peace with it.

Look at these BIOS settings and see if they help you any. It is for a 3930k but 3820s use the same settings.

http://www.overclock.net/t/1151946/official-asus-rog-rampage-iv-x79-owners-club/1190#post_17351751 post #1200

Es
Edited by Sporadic E - 9/22/12 at 8:37am
 
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