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[Official] The Sandy Stable Club **Guides, Voltages, Temps & BIOS Templates** Inc SPREADSHEET - Page 530

post #5291 of 10702
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Quote:
Originally Posted by klaxian View Post
Thanks. I'm working at it, but so far it's looking like my chip likes lots of PLL voltage. Is there something that I might be missing that would cause it to need so much? I will edit my above post with results so that I don't clutter the thread. Hopefully it will help someone else in a similar situation
Not sure unless you post screenshots of your BIOS.

That would be great!!
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post #5292 of 10702
Here is my modest OC. I'm just using Easytune 6 to oc to 4.1.

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post #5293 of 10702
Quick question... does anyone know if ASUS P8P67 BIOS upgrades definitely affect overclocking ability? I am running version 1202 now, but I see there is 1402 out now. From the release notes, I don't see anything major that was changed that would affect its ability to overclock, but what have your experiences been? Is 1402 better or worse than 1202 for overclocking? Thanks.
post #5294 of 10702
Aight here you go guys just finished 12hrs of p95 4.9ghz @1.344. I actually got it to 5.2ghz @1.42 with p95 for 4hrs but just didnt like the temps oh yea sorry running a 2500kwith a Asrock exteme 3 gen 3
[IMG]<a href="http://imgur.com/2QB9y"><img src="http://i.imgur.com/2QB9y.png" title="Hosted by imgur.com" alt="" /></a>[/IMG]
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post #5295 of 10702
Disabling CPU Spread Spectrum seems to have fixed that bug that caused my previous stable 4.7 and 4.8GHz settings to suddenly become unstable (After shutdowns or reboots I believe). This happened both at CPU Spread Spectrum AUTO and Enabled.

I've heard that for Sandybridge, CPU Spread Spectrum will always default to Enabled when CPU Spread Spectrum is sat to Auto. And that it is recommended to have it Enabled (Or Auto) when using default 100MHz BCLK.

I've been playing with 4.7GHz and High LLC with C3/C6 Auto. I just compensatet using a higher Offset Value in order to get about the same Load Vcore I did with LLC at Ultra High.

Been stable for days now. Had several shutdowns to test if stability would stick when CPU Spread Spectrum was Disabled. And it has really been solid.

So strangely enough, on my particular system it seems CPU Spread Spectrum must be Disabled. At least on my tested 4.7GHz and 4.8GHz overclocks.
Edited by turrican9 - 11/5/11 at 1:30pm
    
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post #5296 of 10702
Quote:
Originally Posted by klaxian View Post
Hello all. I just picked up a 2500k for gaming on Thursday and I've been working on an OC. My current 4.8GHz is stable (prime95 1344 + 1792 1hr, blend 1hr, F@H 36hr.). However, the voltages required make me a little nervous, especially seeing lots of folks getting 4.8GHz on a lot less. I am using 1.45 vCore (1.43V after Vdroop) and 1.89V on the PLL right now. I hit 75C in the most demanding stress tests, 60C for F@H.

What seems most unusual is my PLL voltage. I thought I was almost stable at 1.42 vCore 1.7V PLL, but I got stopped workers. I then I lowered the PLL voltage to 1.6 - same thing. A PLL voltage of 1.55V gave me BSOD 101 errors so I thought I needed more vCore. I kept going up by 0.01V until I hit 1.45 vCore and I didn't want to go higher than that. I kept the PLL voltage at 1.6V and still got stopped workers in prime95. At 1.6V PLL or below, I needed to enable "PLL overvoltage" to boot.

After everything I read, I thought lower PLL voltage was more stable, but I thought I'd give a higher PLL voltage a try. I set it to 1.89V and everything has been stable since. It is strange that my chip needs more than 1.8V PLL to be stable at these clocks while others are running better with much less?

Now that the system is stable and it seems that more PLL voltage is needed for my chip, I bet I can reduce the vCore and I will try that next. Do you have any recommendations? Thanks.

Thanks for help. My buddy helped put together.. what does TIM stand for? Cable management shouldnt causing more heat. Its not perfect but the majority is tucked where it should be on the Corsaid 500r.. I left PLL on auto. Could this be the issue?
Edited by stephenk - 11/5/11 at 3:25pm
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post #5297 of 10702
Ok so i switched to intel. Bulldozer was epic failure

Bought a used p67 ud5
used all the rest of my amd build
bought a brand new 2500k

The 2500k takes 1.45-1.475 volts to be stable at 4.5 and wont go any higher stable no matter the volts.
Question is.....
Is it the chip or the board that decides the voltage needed?
batch number is 3125b502
Other chips ive seen on other forums from same batch were all great clockers and took low volts.
What do i do?
Buy new chip
Buy new mb?
i want 4.8-5.0 24-7
post #5298 of 10702
Quote:
Originally Posted by stephenk View Post
Thanks for help. My buddy helped put together.. what does TIM stand for? Cable management shouldnt causing more heat. Its not perfect but the majority is tucked where it should be on the Corsaid 500r.. I left PLL on auto. Could this be the issue?
You're welcome. TIM = Thermal Interface Material. It's what you put between your processor and heat sink. It need to be applied in proper amounts and in the right way for maximum effectiveness. Cables don't cause more heat because they get hot (for the most part), but they can create poor airflow in your case. That means less air going where it needs to go and possibly creating "hot spots". Run cables behind your motherboard tray if your case supports it.
post #5299 of 10702
My third core gets the hottest lingering around 78 and peaking at 82... The second hits 80 and the first and fourth are only around 70-73

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post #5300 of 10702
here's my submission



Wondering if I can get that voltage down somehow, it fluctuates between 1.360 and 1.384. My H70 needs to be cleaned, should get the temps down a bit. I'll post my settings in a minute.



EDIT:


Settings

PLL overvoltage: disabled
EPU power saving: disabled
LLC: High
VRM: Manual, 350
Phase Control: Standard
Duty Control: T.Probe
Cpu current: 100%
Offset: + 0.050
DRAM: 1.5v
Cpu spread spectrum: Enabled

Everything else auto or stock.

Edited by tahqa - 11/5/11 at 5:23pm
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