Intel i7 4790 extremely high temps

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Feb 14, 2017
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Hello, I have an intel i7 4790 with a GTX 770 graphics card. Lately, my computer has been having problems booting up, such as turning on but the screen will still be black. The only fix is to keep powering down and back on until it decides to work.

Another issue I'm having is extreme framerate drop. I have been playing most games on high graphics settings with no issues, but recently I can't even play a game of league of legends on the lowest graphics settings because I only get 4 fps.

I downloaded a program that checks my CPU temperatures and all four of the core temps were 95+ degrees Celsius. This is the case whether the pc is idle or if I'm in a game. As far as I know, the core temperatures have just recently started getting that high and that is causing a huge fps loss in every game.

Also, it may be worth noting that my Core speed and Core voltage are rapidly fluctuating.
Core speed fluctuates from 800MHz-3600MHz...
Does anyone have an idea of what they think might be wrong?

P.S. Sorry for bad formatting. I'm posting from my phone.
 
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I have a few suggestions:
1. Problems booting up may be your hard drive dying. Getting a new one or an SSD is recommended.
2. I doubt this is the case, but maybe try replacing your thermal paste.
3. Check for any dust in the CPU fan.
 
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I have three fans in total and they're working properly and there is no buildup of any dust or dirt inside the case at all. I've thoroughly cleaned the pc since the happening of this situation. The problem is that I've had the same system for two years and I've never had any problems. Now it's a miracle if it even turns on properly.
 
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Intel Core i7 4790 (Haswell) @ 3.60GHz
ASRock Z97 Pro4 mainboard
8GB DDR3 memory
Nvidia GeForce GTX 770 graphics card
800w battery - not sure what type it is.
Anything else you're looking for just let me know.
 
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I replaced the thermal paste after noticing it was nearly all gone. How long should i wait to see results from it?
 
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I just simply applied the paste then put the HSF back on to let it smooth itself out. I rechecked my core temps and I'm scared to even let my computer keep running. All four cores are still 95 degrees+ celsius.
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Yes I haven't added or changed anything since I bought the PC. It has two fans that are working properly and a fan built in on the graphics card that is also working properly.
 
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I have two builds with 4790k's and they both reach between 90-100c when placed under full load, using a stock cooler. Don't freak out man, that's the stock cooler for you. Unless you are rendering/video editing or compressing video, just playing games isn't going to cause a constant 100% load and temperatures that high. If you are really concerned, purchase an aftermarket cpu cooler (That will definitely bring temperatures down) but don't be concerned if you aren't constantly stressing your cpu to full load with a locked processor. After all, you not even overclocking. They just run hot and there's not much you can do about it. Let me know if you are interested and i'll help you find the right cpu cooler for your build.
 
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I'd love some help finding a good cooler. Also, should I replace my hard drive since I'm having issues booting up? And what can I do about my framerate loss when I'm playing a video game. I'm fine with the temperatures if they're normal (I was told they weren't) but I'm still having issues overall that I thought were stemming from the overheating.
 
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Intel has a Processor Diagnostic Tool that you can download and run to check your cpu http://www.intel.com/content/www/us/en/support/processors/000005567.html.

If the Intel tool shows the processor to be in good health, what Crimstar said about replacing the OS hard drive, and as cheap as SSDs are these days, a 256 GB Samsung 850 EVO would be a good choice

as to cooler, i've got another computer besides the one you see in the sig below, running the same 4790 cpu (non-k)
- i'm running a noctura-U12S and been real happy with it's performance. If you want a step up in cooling, i'm running a noctura-U14S on an i7-5960X cpu - price on the U12S should be in mid $60 range, the U14S in the mid $70.

The U14S definitely has an edge on the U12S

there are other more economical coolers folks will step in and mention - i'm just stuck on the Noctura quality
 
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No it is not a new build. I bought it approximately 2 years ago. I did confirm that I am running the newest version of BIOS. [strike]As for the case, I'm not sure how to figure out which one I have and I dont remember which one it is but there is plenty of room inside for anything.[/strike] I actually just found the case online. It is an X-titan 200 full size
 
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Ok - to address your startup issue:
1. Do you have a second graphics card we can use for testing?
2. What power supply do you have? I know its 800w but I need to know more.
If you don't have a second graphic card, i'd like for you to take the gtx 770 completely out of your build and plug your monitor into the onboard video. I'd like to see if the startup issue persists after you do this. If it DOES, then i'd be inclined to say your issue resides either with the power supply or the motherboard. If it DOESN'T, then the issue is likely either your graphics card or the power supply.
 
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I do not have a second graphics card, so I will try to hook my monitor up to the board, though I'm not sure how to do that. My power supply is an ATNG aped-950fc.
The startup issue seems to be resolved after I updated the mainboard, but I'm still dropping to about 4 fps in every game I try to open. The same games I've been getting 140fps on for months
 
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I appreciate your input. I downloaded the diagnostic tool and it did indeed pass. However, after I upgraded my BIOS to the newest version it boots up properly. I'll still be looking into that cooling system you suggested and see what its all about. If you have any idea why my frames are dropping to 4fps when i load a game up, I'd be open to them. Thanks again.
 
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Another thing I forgot to ask is if you install cpu-z and run a full load stress test, what voltage is your motherboard running the cpu at? I'm wondering if your motherboard is causing your cpu to run at higher voltages, hence the high temperatures.
You said you didn't know how to use the onboard? Easy, take the graphics card out of the system and plug your monitor in to the motherboard video ports.
 
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I did a stress test and it was pulling 0.7 volts but I think that is because it is being throttled due to the high temperatures. It only uses about 40% of my cpu when under a stress test.
 
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I went to the bench tab in cpu-z and just clicked on stress CPU. Then I looked at the core speed which was really low and realized it was only using about 40% of my CPU in order not to overheat. Which could be causing my frame lag when I open up a video game. My CPU runs normally until it hits 95+ degrees then it gets throttled so try and stay cool, even under a stress test apparently.
 
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