One core alot hotter than the other cores

gasolin · Jun 23, 2017

I have a i7 7400 and one core get's up to 8-10 c hotter than the other cores and it's not core #0 it's core #1

Is that normal? I tried to put a bit more thermal paste on the cpu than what i normally us (but still not alot) in the center of my cpy, only small pea sized. Use Gelid gc Extreme

Last i tried according to manual of my hyper 412s (using 1 NF-P12PWM fan) to put thermal paste on the cpu cooler, YES the manual tells you to put it on the cpu cooler, so i tried that.

RobCrezz · Jun 23, 2017

Thats pretty normal.

What temp does the hottest core get to under load?

gasolin · Jun 23, 2017

About 9 c hotter than ther rest, max 45c prime 95 small fft.

Highest temp for the coolest core 37c, it's hot atm so max temps could get about 5c hotter.

RobCrezz · Jun 23, 2017

max 45'c under load? Thats crazy low, are you sure? if thats right then thats great temps.

gasolin · Jun 23, 2017

yes, it's only a 65 watt tdp cpu, i lowered cpu pll oc voltage to 1.090, heres my temps hyper 412s with 1 nf-p12pwm fan running at 60 or 70%

http://peecee.dk/uploads/062017/2017-06-23_16_02_45-Indstillinger.jpg

Coldest core was core#3 at 19 c (core temp 1.0 rc7 and hardwareinfo 64 bit v5.46-3100, hardwareinfo wasn't open when core temps showed lowest temp at 19 c)

RobCrezz · Jun 23, 2017

Yeah that screen shot is only running it for like 1 minute though? still good temps.

What motherboard do you have? Might be worth seeing if you can do some overclocking on the CPU, some motherboards can do some overclocking on non-K cpus.

gasolin · Jun 23, 2017

I could run it longer, just don't think i atm when it's not warm where i live that i would have higher temps than under 50c,mid 40's

Try reading this and see if it makes any sense to you

https://communities.intel.com/thread/112262

I so this in a forum a changed my cpu pll oc voltage and boom, as if i suddenly got a 360mm aio my temps dropped (seems only to be related to msi although asus have something called internal pll overvoltage which could be the same)

Msi B250 PC MATE, i could run it at 3.5ghz all the time but according to the passmark performance test it made almost no difference, although 3.5ghz is not on all cores, with settings on aut it shouldn't run 3.5ghz on more than 1-2 cores not 4 (but i can oc it to 3.5ghz on all cores)

RobCrezz · Jun 23, 2017

3.5 on all cores would be well worthwhile for games.

gasolin · Jun 23, 2017

https://www.youtube.com/watch?v=nioRVSqjFg0&app=desktop

gasolin · Jun 23, 2017

I thought it could run 3.5ghz on all core. but it can't.

1 core 3.5ghz 2 cores 3.4ghz 3 cores 3.4ghz 4 cores 3.3ghz

RobCrezz · Jun 26, 2017

Can you adjust the BCLK in your bios? As you might be able to get a bit more clock speed by raising that.

gasolin · Jun 26, 2017

RobCrezz :

No, as fare as i know you can't oc non k kabylake cpu not evben using bclk, i only have a B250 mb

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