3930k... one core 12 degrees hotter than another core....

[Hexstatic]

Hi!

Im overclocking my 3930k and running Linx to stability test, whilst monitoring my coretemps this is what I see... (in degress Celsius) (running for >30 mins) (monitoring with RealTempGT)...

81. 73. 72. 68. 69. 73

O/C is running stable at 4.70 Ghz, but the temperature difference between core 0 and core 3 worries me. ... the temps are good, but why is the one core so much hotter than all others? ?


Thanks!!

 

[AverageNinja]

Could be you've applied to much thermal compound. I'd try re-applying it and I also suggest you to use Noctua NT-H1 paste.

 

[Hexstatic]

hhmmm OK, is that the best thermal paste to use? at the moment im using Arctic Silver 5.

CPU cooler is the NH-D14.

 

[FTLN]

Replace the thermal paste under you IHS if you got balls

http://www.youtube.com/watch?v=XXs0I5kuoX4

 

[grok23]

He's got a Sandy Bridge E chip, not one of the Ivy Bridge ones that Intel cheaped out on the IHS.

 

[Hexstatic]

Yep, as above, socket 2011, Sandy Bridge-E

 

[B3rni3]

I would definately reseat the cooler. My 3930k has one core that runs a little hotter but no where near 12 degrees hotter.

What voltage are you running at ?

 

[seumasbeathan]

hhmmm OK, is that the best thermal paste to use? at the moment im using Arctic Silver 5.

CPU cooler is the NH-D14.

You dont want to be using AC5, stick to MX-4 or NH-1

 

[AverageNinja]

Agreed, Artic Silver MX-4 or Noctua NH-T1 seem like the best choices. Though the MX-4 is conductive, which is a negative point.
I'm sure TTL would tell you the same

 

[Hexstatic]

I would definately reseat the cooler. My 3930k has one core that runs a little hotter but no where near 12 degrees hotter.

What voltage are you running at ?

OK thanks, will do that when i get some new paste. Voltage is 1.425

 

[seumasbeathan]

Agreed, Artic Silver MX-4 or Noctua NH-T1 seem like the best choices. Though the MX-4 is conductive, which is a negative point.
I'm sure TTL would tell you the same

Na mx-4 isnt conductive its AC5 that is

 

[B3rni3]

OK thanks, will do that when i get some new paste. Voltage is 1.425

That seems a little high. I wouldn't go over 1.4v. You should be able to get 4.6ghz around 1.3-1.35v and that would help lengthen your cpu's life while also lowering your temps. The performance loss shouldn't be noticeable too.

 

[Hexstatic]

That seems a little high. I wouldn't go over 1.4v. You should be able to get 4.6ghz around 1.3-1.35v and that would help lengthen your cpu's life while also lowering your temps. The performance loss shouldn't be noticeable too.

I've reduced the voltage to 1.340 whilst keeping 4.7 ghz, i'll run some tests and see how it holds up

 

[RadeonHDx]

Actually MX-4 is a non-conductive compound, and that is a nice overclock and temps for that voltage!

 

[grassman]

I've reduced the voltage to 1.340 whilst keeping 4.7 ghz, i'll run some tests and see how it holds up

Jesus why such a massive jump :lol:

 

[Hexstatic]

Jesus why such a massive jump :lol:

If the 3930k can run at 4.6 ghz on 1.300v, then 4.7 ghz on 1.340v is a realistic setting.

CPU's been running (playing games) for the last few hours at 4.7 ghz on 1.340v and no problems so far. Will do a Linx test later and see how she performs, but I suspect all it good at these lower voltages.

update/
Trying 1.360 now, 1.340 was too low

 

[grassman]

If the 3930k can run at 4.6 ghz on 1.300v, then 4.7 ghz on 1.340v is a realistic setting.

CPU's been running (playing games) for the last few hours at 4.7 ghz on 1.340v and no problems so far. Will do a Linx test later and see how she performs, but I suspect all it good at these lower voltages.

Yes what I meant was 1.425 down to 1.340 how did you miss you were putting way too much into it.

Btw think your steps should be smaller go up by 0.010 or even 0.005 yes its time consuming but you spent allot on that rig it deserves the time spent.

 

[SolarNova]

From my experiance 4.7ghz should be around the 1.35v to 1.39v area. depending on type of OC (Offset vs set)

I run at 4.6ghz with a offset OC(+0.015) , Vcore maxes out at 1.368v, usualy at 1.360v. Idles at 0.880v @ 1.2ghz.

Make sure when u test for stability u test for atleast 6 hours. I found that on Prime 95 if it was going to BSOD it would happen within the 1st 4 hours, and if it was going to error out it would do it within 6 hours. After that it would last the full 12hours+ without issues ..for me atleast.

 

[Hexstatic]

From my experiance 4.7ghz should be around the 1.35v to 1.39v area. depending on type of OC (Offset vs set)

I run at 4.6ghz with a offset OC(+0.015) , Vcore maxes out at 1.368v, usualy at 1.360v. Idles at 0.880v @ 1.2ghz.

Make sure when u test for stability u test for atleast 6 hours. I found that on Prime 95 if it was going to BSOD it would happen within the 1st 4 hours, and if it was going to error out it would do it within 6 hours. After that it would last the full 12hours+ without issues ..for me atleast.

Thanks! How did you get yours to auto idle down? Mine always runs at 4.7 even when idle...

 

[airdeano]

check your power options in control panel.
if on high performance the CPU will idle full throttle.
balanced mode allows to idle at lower core speed..