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Sandy Bridge - Voltage @ Mhz list - Page 2

post #11 of 401
lol turning LLC off on my board makes the load voltage go up
LLC on 1.42 vcore set in bios, mid 1.3's load
LLC off 1.42 vcore set in bios, 1.47 load Which in turn means my 4.7 ghz is stable. Where as with LLC it was not stable.
post #12 of 401
Thread Starter 
It seems we're all on beta bios
    
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post #13 of 401

Here.. easiest way is to just post my ppd/watt spreadsheet from my 2600k build; contains my voltage settings for 4 different speeds, gives you an idea how much more power it will pull once you OC also.

Google Spreadsheet

*cough* Balla are you going to post your ppd numbers in my database? Pretty please?
post #14 of 401
Quote:
Originally Posted by cory1234 View Post
Prime95 just failed after an hour and a half. Bumped it up to 1.31v. I never did full stability testing at 4.5ghz, but I passed 20 linx runs @ 1.25v (load).
Haha damn mine just failed too after I came back; an reboot happened which I assume a bsod occured (too low for a 4.5 I guess). I bumped it up to 1.31, cpu-z 1.56.2 reading 1.304 as of prime95 in blend testing.

You might want to add another 0.005 or two for a 4.6 to get a stable oc and than find the perfect low vcore by lowering it 0.005 a time.

Anyone know if these rams can be oc'ed at all?

EDIT: down to 1.30v from 1.31v with same 4.5ghz
Edited by SovereigN7 - 1/15/11 at 5:53pm
    
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post #15 of 401
Quote:
Originally Posted by gooddog View Post
should also add if HT is on or off...

4.8g HT off. 1.34. Prime95 3hrs, IBT: 20 runs
4.5g HT on. 1.3 Same


I haven't tried to optimize, I just wanted to see what I could get below 1.35 with HT on and off.
if you are going to off HT why do you buy 2600k ?
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post #16 of 401
Thread Starter 
Quote:
Originally Posted by Digigami View Post
Here.. easiest way is to just post my ppd/watt spreadsheet from my 2600k build; contains my voltage settings for 4 different speeds, gives you an idea how much more power it will pull once you OC also.

2600K PPD/Watt

*cough* Balla are you going to post your ppd numbers in my database? Pretty please?

My ppd is terrible, like 16k on my i5-2500k and 17k on my gtx 470.
    
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post #17 of 401
http://www.overclock.net/intel-build...l#post12018273

"Minimum stable voltage" means voltage at which the CPU can sustain at least a couple of minutes of prime95. Going below the curve typically means an immediate blue screen or a crash in one of the prime95 threads. Voltage is read using either CPUID's HW Monitor or Gigabyte's Easy Tune 6 (those two agree with each other).
Edited by hamster3null - 1/15/11 at 5:18am
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post #18 of 401
Thread Starter 
Ahhh yes, I had a run in with ASUS LLC back on my AMD chips.

I remember being able to do 4.1GHz on a 965 with 1.2v whereas everyone else needed 1.45 or more.

I'd be careful if I was on an ASUS board - they report power voltage but temps and stability don't reflect the actual voltage being used.
    
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post #19 of 401
1.47v during load, 1.45v in BIOS. 4.9 GHz HT on.
Still tweaking, done Prime95 for 5 minutes, but no crashes yet.
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post #20 of 401
Thread Starter 
Here we go I found it: Notice my voltage, and my temps...




It was a rather large thread here on OCN trying to figure out why I was .1v or more below what everyone else needed.

It turns out it was because of LLC on the ASUS board, it would boot at lower voltage and report said lower voltage, but the actual voltage was far higher in Windows despite it not being reported as such.

It was all quite embarrassing to me to be honest.


Here is the thread: http://www.overclock.net/amd-cpus/82...-ii-965-a.html

As I said it turned out to be an LLC issue, and the actual voltage needed with less LLC was around 1.46 I believe with the exact same temps.
Edited by BallaTheFeared - 1/15/11 at 5:38am
    
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