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The ULTIMATE Sandy Bridge OC Guide + P67A-UD7 Performance Review - Page 26

post #251 of 713
Quote:
Originally Posted by compudaze View Post
Looks normal to me. What board are you using?
p67a-ud4-b3.

Hhmm this is interesting. Now when I dropped it to 1.365 it seems to be working (only 10 min of p95 but still). I thought I tried that before and it was not working.

In windows at load is is fluctuating between 1.272 and 1.284. Not sure if I have seen it fluctuate but is that bad? Would I be better off at 1.37 with no fluctuation? At idle it is at 1.332.

Also, Do you think I will need to change the votage when I enable power saving features? I just like the idea of having them on.

Guess I will try 1.360, update shortly
post #252 of 713
Well... 1.360 blue screened during p95 after about 10-15 min. Not really sure why but this seems high to me. OP was saying the range should be up to 1.375 for up to 45x, so me being at 44x and having to use 1.370 seems high. 45x was not working even at 1.38...

So...Should I rock 44x at 1.37, or drop to 43x where i Believe I had it stable at 1.335? Whatcha think guys?

Max temps are around 60 for 44x
Edited by OneSlickDeal - 3/29/11 at 8:18am
post #253 of 713
He's talking load voltage.

You're only at 1.284v during load. That's pretty good.

It's normal and within spec to set the voltage in BIOS to 1.37v and only have 1.28v during load.

If you want to decrease that (Vdroop is what it's called I think), enable LLC (load line calibration) in BIOS.

With my ASUS board, LLC set to Ultra High, the voltage I set in BIOS is the same as my idle voltage and load voltage in windows.
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post #254 of 713
Here's a good reference for Vdroop: http://www.anandtech.com/show/2404/5

Hopefully it helps you make an informed decision as to whether or not you want to eliminate or decrease it.
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post #255 of 713
Quote:
Originally Posted by compudaze View Post
He's talking load voltage..
Oh really? I was under the impression he was talking about the voltage in bios. hhmm. Hopefully he chimes in . Either way I will read up on that vdroop and make a decision. Thanks again for your help.

This is fun...but at the same time it is driving me crazy
post #256 of 713
Thread Starter 
don't worry from seeing some chips they require more voltage than what i posted, don't take it like its teh law, you can of course use more voltage. lol. Personally i have seen some chips that need like 1.45v for 4.8ghz and some that need 1.35v. Its all about the CPU.

That article from anand is old, technology has come a FAR way since that was written, LLC is fine, transient overshoot is not a problem like it used to be, even on X58 it was fine to use LLC, no one has killed a chip from LLC, they have from higher voltage. Don't worry use LLC.
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post #257 of 713
Quote:
Originally Posted by Sin0822 View Post
don't worry from seeing some chips they require more voltage than what i posted, don't take it like its teh law, you can of course use more voltage. lol. Personally i have seen some chips that need like 1.45v for 4.8ghz and some that need 1.35v. Its all about the CPU.

That article from anand is old, technology has come a FAR way since that was written, LLC is fine, transient overshoot is not a problem like it used to be, even on X58 it was fine to use LLC, no one has killed a chip from LLC, they have from higher voltage. Don't worry use LLC.
So My board has LLC but just enable/disable/auto. I have no level 1, level 2 etc.

Another question. I plan on sticking to a modest overclock of 4.2 to keep the voltage low. Do you still recomend LLC? With it disabled, I have a .08 variance between idle and load. Do you think thats going to kill me? Or is it fine to just leave it as is. At 42x its looking like i need 1.295V to keep it stable. This is with the power saving features on, turbo off, llc off, and PLL disabled.

Whatcha think. And thanks again u rock

Edit: I have been noticing that if the voltage fluctuates while at load (1.212-1.224) I will crash. Wonder if this is standard. Is the system more stable when the voltage stays stable at load...hhmmmm
Edited by OneSlickDeal - 3/29/11 at 11:05am
post #258 of 713
Thread Starter 
Here i want yout o look at something, the UD5 and UD7 only have levels, the UD4 has enable or disable, look at this, someone did this, notice that easytune reads teh wrong voltage, cpu-z reads the same if its a B2 board, but this is for the UD4 B3:
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post #259 of 713
hhmm... interesting. So basically I am F'ed if I want true voltage readings. Cpu z doesnt give the right voltage, it says 1.068 at all times. EasyTune is Obviously F'ed. Lol actually look at this.

Bios = 1.30
Load:
EasyTune = 1.212-1.224
CPUID HwMonitor = 1.21-1.22
CPU-Z = 1.068 ?
HWiNFO32 -> VID = 1.3411

Idle: (with pwr saving features, clocks down to 16x)
EasyTune6 = 1.296
CPUID HwMonitor = 1.3
CPU Z = 1.056?
HWiNFO32 -> VID = 0.975

I mean honestly....where can I find my true Voltage?

Also, Whatcha think about LLC on a low 42x overclock?
post #260 of 713
Thread Starter 
you need to buy a digital multimeter, they are 10 bucks even 20 maybe, you can get it at a radioshack, and then you can measure the voltage off the board. That LLC measurements are done on yoru board, you can see the difference between easytune and the DMM reading off the choke, you can use that to calculate your real voltage.

CPU-Z did show correct voltage for B2 boards, as in same voltage as easytune, id go with easytune. Anyways B3 its showing qpi/vtt voltage instead.
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