4790K Prime95 Temps Seem Very High

Guinibee · Dec 7, 2014

Hello all,

Just installed a new Asus Rog Hero VII, some Corsair 2400 16GB Ram, and a 4790K. I let the easy tuner OC my cpu for me (which I'm not too sure what it did) and it seems to have put the boost at around 4.58ghz...which is odd...about 4.6. Anyway I ran Prime95 to see what temps I'm getting with the slight OC and I'm running at the high 80C range...I feel like that might be too high. I also ran 3DMark Firestrike and during the physics test I was getting around 70C.

I'm idling around 27-30C though which seems normal.

I am using a Corsair H100i cooler. Are these temperatures I should be worried about or does this CPU just run that hot? I haven't tried re-seating the cooler yet because I don't want to waste my time with that if these are actually normal temps for this cpu.

Thanks

coolcole01 · Dec 7, 2014

thats pretty warm for daily use start dropping the vcore those oc utilities usually use to much bring it down till it becomes unstable then give it just enough juice to be stable.

A_Goat · Dec 7, 2014

Guinibee :

You should not be getting anywhere close to 70c with an H100i.
I run an 8320 overclocked and temps don't rise above 40C during hours of Prime 95.

http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

Guinibee · Dec 7, 2014

A_Goat :

Guinibee :

You should not be getting anywhere close to 70c with an H100i.
I run an 8320 overclocked and temps don't rise above 40C during hours of Prime 95.

http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

So what should I do? I used the utility because I'm unsure of how to OC this thing manually...lots of options. I will bring the cpu back to stock and test it again, but I don't think it will drop the temps much.

A_Goat · Dec 7, 2014

Guinibee :

A_Goat :

So what should I do? I used the utility because I'm unsure of how to OC this thing manually...lots of options. I will bring the cpu back to stock and test it again, but I don't think it will drop the temps much.

I would recommend not OC through windows. I've never got anything stable through windows overclock.
BIOS settings will always offer the most exact and stable settings.

Remove easy tune settings, and get stock setting temps. '
Use core temp to measure.

matabuntu · Dec 7, 2014

Try these prime v26.6 (if you currently using prime v27/28)
Windows: ftp://mersenne.org/gimps/p95v266.zip
Windows 64-bit: ftp://mersenne.org/gimps/p64v266.zip

The latest prime95 uses AVX programming which force your CPU to a very worst case scenario. You can also try AIDA64 extreme (6-12 hrs Stress Test) or x264 'cool' stresser (30 loops) as an alternative to test stability

If you want to learn oc I would suggest you to start with this link: http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics

if anything just post back here.

Guinibee · Dec 7, 2014

matabuntu :

Thanks for the info! Alright well I actually saw that thread already...but I haven't really started to OC anything manually. I had to manually set the multiplier back down to 44 so that it would only boost to 4.4ghz. I was using some Prime v28.5 before. With the 4.4ghz boost I'm getting low 70s in Prime v28.5 and high 60s in the Prime v26.6. Using x264 I'm getting 60-65C for 1 loop (only tested one loop for now so I could respond faster).

Perhaps it was just the utility threw some high voltage spike in there or something...but these temps sound much better correct?

Also I have been using HWMonitor and MSI Afterburner for my temps.

A_Goat · Dec 7, 2014

Guinibee :

matabuntu :

Thanks for the info! Alright well I actually saw that thread already...but I haven't really started to OC anything manually. I had to manually set the multiplier back down to 44 so that it would only boost to 4.4ghz. I was using some Prime v28.5 before. With the 4.4ghz boost I'm getting low 70s in Prime v28.5 and high 60s in the Prime v26.6. Using x264 I'm getting 60-65C for 1 loop (only tested one loop for now so I could respond faster).

Perhaps it was just the utility threw some high voltage spike in there or something...but these temps sound much better correct?

Also I have been using HWMonitor and MSI Afterburner for my temps.

Only here bad things about HWMonitor. Try coretemp.
Staying under 70 is much better, but still.... you should NOT be approaching those temps with an h100i.

Guinibee · Dec 7, 2014

A_Goat :

Guinibee :

Only here bad things about HWMonitor. Try coretemp.
Staying under 70 is much better, but still.... you should NOT be approaching those temps with an h100i.

After doing a bunch of research it seems with Prime people can easily get over 70C with the 4790K?

I'll try CoreTemp instead. I have a feeling I may have put too much thermal paste on the cpu...I read you only need the size of a pea...I did a couple lines of paste...prob too much. I've run out of arctic silver though, so I ordered more and when I get it I will try to re-seat the cooler and see if that helps.

CompuTronix · Dec 8, 2014

Guinibee,

Ambient temperature hasn't yet been mentioned, which is always a basic and critical bit of information that shouldn't be overlooked when working a temperature problem. What is your ambient temperature please?

I know A_Goat already posted this, but you should actually give it a read: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

It will help you understand a complex and confusing topic, and show you how to properly test your rig at load and at idle to get valid thermal benchmarks.

CT :sol:

Guinibee · Dec 8, 2014

well that was a great read! I don't have the time to really do all the tests right now, but I will when I get time and I will update. I'm still very confident that I put way too much paste on my cpu and I am waiting to get more paste before I try again. My ambient temps are around 20-22C...so def low. It's winter right now and I'm in the Northeast so def cold.

My tests on Prime95 were def the blend test. I will try the small FFT test instead next time and I will re apply the paste the correct way and update everyone in a few days when I receive the new paste. Again my temps with the blend test was in the 70s on the most rigorous version of Prime, so it seems I shouldn't have to worry for the next few days. I will use the pea size method for applying the new paste and I have an IR gun that I will measure ambient with to get real temps.

Thanks for the help!

Guinibee · Dec 12, 2014

well I haven't gotten official tests done yet according to that article, but I did a couple things of note. I re-seated the cooler and made sure it was snug. I read that some people have issues with the h100i and some play in the backplate, which I have def some looseness until I tighten down the nuts. The copper block does not move at all when secured. I used the "pea size" method with the arctic silver 5. I also noticed that the fans I had for the cooler are intakes on the top of my case; hot air rises so I should really be exhausting out of the top. I swapped the direction of these fans and the fans above them (sort of a push/pull setup, I have a CM Haf X case and I'm using the top mounted fans to assist in the exhaust from the h100i fans). The other big thing I did was fix corsair link, which my version of the software seemed to have issues and wouldn't let me fix the color of my waterblock or see my pump speed. I was starting to think maybe my pump wasn't working at all. After I fixed the software I see a pump speed so I guess it is working and I verified all fans are spinning.

Anyway after doing these fixes I'm getting the following temps:

x264: high 60s
Prime95 26.6 small FTT: low 70s
Prime95 26.6 blend: mid 60s

Clock is stock 4.0, turbo 4.4ghz.
Voltage stays at a steady 1.221V (set to auto).

I'm thinking I could push 4.5ghz and keep the same vcore and maybe 4.6ghz with a slight bump on the vcore and hopefully the temps still remain workable. I was hoping for 4.6ghz stable when I got this cpu...
Ambient is 20C, so these temps might be a touch higher according to the Intel Temp Guide (22C is the reference point).

These tests were done with twitch running in the background and for around 5 minutes long. Obviously not really official results, but due to the extra work on the cpu and the temps being acceptable even if they were in optimal conditions I think I can live with these numbers.

Are these numbers good for the situation?

DubbleClick · Dec 13, 2014

That voltage explains all the temperature problems. At stock 4.4ghz, you should be around 1.1-1.18v vcore. You will probably be able to hit 4.6ghz with 1.22v with the same temperatures.

Guinibee · Dec 13, 2014

Oh awesome! Yeah I was reading devil's canyon is super touchy when it comes to voltage. Should I manually set it to like 1.1 with an offset of +. 05 and see the temps at stock speed?

DubbleClick · Dec 13, 2014

Set it down gradually in like 0.01v steps until it becomes unstable. Not every chip is the same. Also, I prefer manual/override mode voltage, but that's up to you.

CompuTronix · Dec 13, 2014

Use adaptive voltage ... you can read about it here: 3 Step Guide to Overclock Your i7 / i5 Haswell Platform - http://www.overclockers.com/3step-guide-to-overclock-intel-haswell

Guinibee · Dec 13, 2014

CompuTronix :

lol you're loaded with guides...thank you!

CompuTronix · Dec 13, 2014

Well ... if nothing else ... it's nice to be thought of as loaded!

4790K Prime95 Temps Seem Very High

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