• Weird temperature measurements on my i7 4790K
    25 replies, posted
Hello, I've recently got problems with my CPU. While i was rendering a video, my Pc just shut itself off and rebooted without any warning. After reading something about that problem I've found out that the temperature has something to do with it. So i did a stress test (prime95) and looked at my Cpu temps while doing the test. These are the Temps on Idle. [img]http://img5.fotos-hochladen.net/uploads/1gqb8mxe6zc.png[/img] These are the Temps immediately a second after started the test. [img]http://img5.fotos-hochladen.net/uploads/206n1sag8yr.png[/img] And these are the Temps i get after a second when i press stop. [img]http://img5.fotos-hochladen.net/uploads/3enc6pdraj1.png[/img] Does anybody know what the problem here is ? thanks, IJerry2595I
[QUOTE=~Kiwi~v2;49561087]thermal paste gone bad not enough mounting pressure coolers fan isn't working hard enough[/QUOTE] I've just applied new paste a few days ago. Mounting pressure seems pretty good. No problems with the Fan either. I've even touched the plate from the cooler with my finger while it was showing 100° and it wasnt even near that hot.
[QUOTE=~Kiwi~v2;49561119]have you remounted it ENTIRELY?[/QUOTE] The Cooler ? if so, yes
[QUOTE=~Kiwi~v2;49561152]Paste gone bad or CPU temp sensor gone bad. Former is more likely, the latter is rare. What paste did ya use and how much did you use?[/QUOTE] I used the paste that came with the CPU, i used so much that a paper thin layer was evenly across the chip. Is it normal that the temp can change 60° in less than a second ?
[QUOTE=~Kiwi~v2;49561182]not normal also its meant to be a pea sized[/QUOTE] ok, should i remove the paste and get new one? like.. does it do any harm if i leave it like this ?
[QUOTE=~Kiwi~v2;49561220]only if you throw it under load you should grab new stuff yeah [url]http://www.amazon.de/ARCTIC-MX-4-Gramm-Hochleistungs-W%C3%A4rmeleitpaste-K%C3%BChler/dp/B0045JCFLY/ref=sr_1_9?s=computers&ie=UTF8&qid=1453170585&sr=1-9&keywords=mx-5[/url][/QUOTE] Ok, bought. And if it is the temp sensors fault ? Do i have to send back my CPU or is there any fix.
[QUOTE=~Kiwi~v2;49561259]yeah send the CPU back[/QUOTE] Alright, thanks for your help
What cooler do you have?
IIRC Arctic Silver has a really good tutorial for how to apply thermal paste to different cpus. Depending on the cpu, they recommend either setting a pea-sized drop on the center and letting the cooler spread it or spreading it manually via credit card or similar hard plastic
[QUOTE=Levelog;49561304]What cooler do you have?[/QUOTE] I've got the be quiet! Dark Rock Advanced C1
Don't honestly believe the CPU is all that bad, I don't think its possible for the CPU to jump immediately to 100 degrees in under a second, and then promptly stay there. Especially considering you touched the CPU and it didn't feel like it could boil water. That being said, you might wanna check out some other temperature graphing software to check.
[QUOTE=Dawnkiller;49561394]Don't honestly believe the CPU is all that bad, I don't think its possible for the CPU to jump immediately to 100 degrees in under a second, and then promptly stay there. Especially considering you touched the CPU and it didn't feel like it could boil water. That being said, you might wanna check out some other temperature graphing software to check.[/QUOTE] Downloaded the Intel Tuning programm thing. [img]http://i.imgur.com/IXQxIJp.png[/img] I clicked the [Start Test] and stopped it right afterwards 2 times. You can see the spikes. It's either 35~ or 90+
As the others said, probably something fishy with your cooler. Redo putting the cooler on, with new paste, and see what happens. If not that, then definitely CPU is the issue.
Spreading out thermal paste so it's paper thin doesn't really work too well. put a pea sized dollop on there than the heatsink will flatten it out itself.
I don't think it would be possible for a +60 degrees jump in temp instantly like the graph suggests then an instant cool down back to 30 it's not physically possible. I think you should take off your cooler and make sure it's not touching any thing metallic but other then that there's something really weird going on
You'd be surprised at how bad the temperature swings are when the CPU heatsink isn't on properly.
[QUOTE=WastedJamacan;49561334]IIRC Arctic Silver has a really good tutorial for how to apply thermal paste to different cpus. Depending on the cpu, they recommend either setting a pea-sized drop on the center and letting the cooler spread it or [b]spreading it manually via credit card or similar hard plastic[/b][/QUOTE] DO NOT do this. Just drop it in the middle and let the cooler do the work. Spreading it manually will make a mess and will cause air bubbles to form.
[QUOTE=Toats MaGoats;49626375]DO NOT do this. Just drop it in the middle and let the cooler do the work. Spreading it manually will make a mess and will cause air bubbles to form.[/QUOTE] It depends on the cooler. If the bottom/contact area of it looks like this: [IMG]http://www.vortez.net/index.php?ct=articles&action=file&id=14258[/IMG] you have to spread out a thin layer of paste evenly across it for it to work properly But if it's flat like this: [IMG]http://c1.neweggimages.com/BizIntell/item/35/103/35-103-099/hyper212_001.jpg[/IMG] then you're correct
It doesn't matter, the die itself is only like 15x15mm the outside areas of the CPU heatspreader don't dissipate a significant amount of heat, so you just put a drop in the middle.
[QUOTE=Cold;49647859]It doesn't matter, you just put a drop in the middle.[/QUOTE] Currently trying to find a source stating otherwise, but I've forgotten what that first sort of pipe solution is called. I've had that cooler in the past, though (CM TX3), and can assure you that a thin, even spread works a lot (I.E >20%) better than just letting the pressure spread it out [editline]1st February 2016[/editline] Ah, here we go, they're called HDT coolers, Heat-Pipe Direct Touch: [URL]http://archive.benchmarkreviews.com/index.php?option=com_content&task=view&id=170&Itemid=1&limit=1&limitstart=5[/URL] It's not the same source I originally got the information from, I read about it on a Swedish overclocking forum after I had bought the TX3 and was sort of not very happy with its performance. The source I provided does not mention manually spreading the paste, other than in the comments, that's what the Swedes told me to do with HDT coolers, using a credit card, and it worked really well, but my point is that the single-dot method is not optimal for those kinds of coolers And if you don't want to take my or the source's word for it, just try it yourself, you'll see a difference
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