Average 4670K Undervolt - Comparison thread

RTWP

New member
Dear Forum members,

Is was messing about with the voltage on my 4670K and I wanted to know how far down I could get the voltage from stock.

When I reached 0.980v at 3.8Ghz (stock), and was able to run multiple stable 30 min. runs of OCCT, CPU: Linpack, 90% RAM usage and AVX Capable Linpack checked, I thought to myself: is this average? did I win some kind of silicon lottery?

So I decided to post a new thread just for the sake of comparing the 'undervolts' you guys were able to achieve (because there are already so many overclock dick-measuring threads out there and this is only my second post or so) And to come up with some kind of average.

Have a nice day!


(the cooler is a Hyper 212 Evo, since my H100i decided it didn't want to serve me anymore... Temps min/max: ±28 - 52)(screenshots on request)
 
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CPU:Linpack by itself is not a complete test. You'd need to run 1 hour of CPU:OCCT and then 1 hour of Prime95 Blend, then use system as you normally would. Only then can you mark it down as stable. ^_^
 
CPU:Linpack by itself is not a complete test. You'd need to run 1 hour of CPU:OCCT and then 1 hour of Prime95 Blend, then use system as you normally would. Only then can you mark it down as stable. ^_^

Personally, I wouldn't say that is either.

I've had CPUs able to run Prime95 fine for 10 hours or so, but then failed in the 11th.

Everyone will have different ideas about what exactly is stable.

I'd probably run OCCT for a couple of hours, and then probably Prime95 overnight/for 12 hours.

To be honest, as long as your temperatures are good, you shouldn't be bothered so much about comparing your chip to somebody elses. How much have your temperatures gone down since stock/auto volts?

You should definitely test more programs and for longer periods of time.
 
Hey guys,

First of all, thanks for the pointers!

Secondly, when I started, my CPU was running stock @ around 1.18v. The temperatures were: min-max 31-68C not accounting for room temps.

Now, stock @ 0.980v the temps are: min-max 25-55,25C again not taking room temps.

I later found out that the 0.980v was fine for handling my daily business (games mostly). But when I ran Prime it crashed about an hour into the test. Will this be a problem, seen as I only play games?

Thanks for the replies, and again, have a nice day!

Gr. RTWP
 
Hey guys,

First of all, thanks for the pointers!

Secondly, when I started, my CPU was running stock @ around 1.18v. The temperatures were: min-max 31-68C not accounting for room temps.

Now, stock @ 0.980v the temps are: min-max 25-55,25C again not taking room temps.

I later found out that the 0.980v was fine for handling my daily business (games mostly). But when I ran Prime it crashed about an hour into the test. Will this be a problem, seen as I only play games?

Thanks for the replies, and again, have a nice day!

Gr. RTWP

I've had chips that have been stable from 6+ hours of Prime95 but failed eventually in gaming. It really depends.

Personally, if it isn't stable in any way, whether Prime95 or OCCT, it isn't stable at all. I'm pretty sure most other members here will agree with me on that.

If you're using Prime95, I wouldn't settle for less than 12 hours. Could probably get away with a little less than 12 on OCCT, but I've always used Prime95 myself for longer term stability testing.
 
With that Id just set it to 1v and see how you get on over the next week or so.

It may need other things tweaking if you put some silly fast ram in....
 
Hi everyone!

The 4670K passed OCCT while I ran it overnight for 7 and a half hour @ 0.995V.

And I'm planning on running some Prime95 as soon as I get home, starting at 1V.
Do you guys have anything to point out, as to, setting up Prime95 for running it for a long period of time?

RAM is on 2133, XMP. But do I need to adjust the RAM-timings from standard if I run into problems and want to run a lower frequency? I'm not really that familiar with adjust RAM settings and such.

After all the undervolting is done, I will probably be overclocking as soon as my watercooling kit arrives, which is in back-order -_-

Thanks for the replies, I'll make sure to keep you posted!

Met vriendelijke groeten/kind regards,

RTWP
 
Have you checked for WHEA errors?

http://msdn.microsoft.com/en-us/library/windows/hardware/gg463286.aspx

I have been able to pass all those stability tests, until I checked my WHEA errors, and I was not as stable as I thought.

Also, I have had BF4 kick out more stability problems on my 3770K than the other big three ever did.

Here is a handy tool to check it.

https://docs.google.com/file/d/0B7CtGVODPUTteWE2V3VWV2FmRGM/edit

Here's the person that made it.

http://forums.anandtech.com/showpost.php?p=34857207&postcount=1
 
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