i7 6700k / my first overclocking, prime95 question

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belegCZE

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Oct 3, 2015
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Hello guys,
by the start of the got myself new PC rig, with i7 6700k Skylake and Noctua NH-U12S pro as cooler, running with ASUS Z170 PRO GAMING.

lately trying to OC, for a first time, so i better to ask arround, when it comes to stress testing and most importantly which temperatures i should keep eye on.

currently sitting on 4,4 GHz, voltage on 1,35

after like 20 min of stress testing with Prime95, my temperatures are mostly arround 65 - 72 °C. but what worries me a bit are those max. temperatures which prime95 showing: 88 - 92 °C. those max temperatures jumps out for a split of a second, literraly, noticed it like 3 times during those 20 min of testing.
so i start to wonder, should i focus on max measured values, or the "average" ones?

tryed to play Fallout 4 with this setup aswell, after 2 hours of gaming, i havent passed 70°C on my GPU once.

so it seems like everything is fine to me, only those max. temperatures from Prime95 scares me a bit.

thnx

 
Solution
synphul
Have a look at the intel temp guide here.
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

1.35v is around the max I'd want to run it at for 24/7 use, overclocking is a matter of fine tuning the vcore with the multiplier. 4.4ghz isn't a very high overclock given the voltage unless you've already stress tested it. Everyone has their own opinions about what's stable or what to use for stress testing. Asus rog realbench is a pretty good multicomponent stress test, hitting cpu, memory, gpu etc. So long as it's stable I'd try lowering the vcore a little to say maybe 1.33v and see if it's still stable.

For temps using p95 on the newer intel cpu's, it's better to use v26.6 and small fft's. (Read the article above)...
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synphul

synphul

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Mar 11, 2011
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Have a look at the intel temp guide here.
http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

1.35v is around the max I'd want to run it at for 24/7 use, overclocking is a matter of fine tuning the vcore with the multiplier. 4.4ghz isn't a very high overclock given the voltage unless you've already stress tested it. Everyone has their own opinions about what's stable or what to use for stress testing. Asus rog realbench is a pretty good multicomponent stress test, hitting cpu, memory, gpu etc. So long as it's stable I'd try lowering the vcore a little to say maybe 1.33v and see if it's still stable.

For temps using p95 on the newer intel cpu's, it's better to use v26.6 and small fft's. (Read the article above). That runs a steady state load so the temps shouldn't fluctuate like you're seeing. 10min of p95 should be fine, no real need to go 20min.

Generally I run realtemp to keep an eye on thermals, run realbench, p95 v26.6, intel burn test and intel's xtu. Sometimes a cpu can pass as 'stable' in one and crash in another test. Again just personal preference. I consider p95 more of a thermal test than stability test since it's pretty narrow scoped. When running stress tests, best to keep an eye on temps and not walk off and leave it, especially for p95 or ibt. The purpose of thermal stress tests is to work the cpu harder than you usually will in regular applications creating a safe 'worst case scenario'.
 
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belegCZE

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Oct 3, 2015
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4,510
thnx for the reply,
havent tryed to push my CPU tot max (yet), taking one step at the time you know, real rookie here :)

tbh 100MHz more or less, aint much of a difference in the end. but ofc its nice to see where your hardware can go

anyway gonna try v26.6 like you mentioned, together with during gaming temps ofc.

PS: my bad posting in wrong section, havent seen this section when i wrote this topic, obviously :p
 
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