Weird cpu overheating during games

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ploglo

Honorable
Jan 2, 2013
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10,530
Hello,Hello, I've been having a recent issue with my year old, custom build gaming pc that involves strange cpu overheating. Only recently, my cpu has started to hit around 60-65 degrees C. The kicker is that if i simply alt tab out of the game, it goes straight back down to 40 C, like if it were idling. Is it usual for the cpu to get hot only if the game is actually running, but not if it is alt tabbed out yet still on. Also, only my cpu is overheating, my gpu is fine. Don't know if this will help but this also doesn't happen for games that actually overheat my pc, specificly Far Cry 3. It gets that hot even if i'm alt tabbed out, so I will be getting a new heatsink soon. Any suggestions about what the problem may be, I would love to keep playing games. My specs are windows 7, 64 bit, an intel core i5 2400 @ 3.10GHz cpu, 8 GB of ram, a biostar group TZ68K+ mobo, GeForce 9800 GTX+ gpu, 699 GB Hitachi HDS721075DLE630 hard drive. Any help would be appreciated.
 
I never said lack of it. I meant it could be faulty. Windows memory scan is bad. Don't use it.

And rising temperatures are normal. CPUs perform calculations, and their product is heat. That's how they work.

Anyway, on which step of memtest have you stuck?
 

Well, over the past week the temps have gotten hotter by over 20c while playing games, even nonintensive games like minecraft are unplayable with my cpu getting so hot it shuts off, a problem I have never had before. My problem with memtest is that I can't get either the normal download or the usb download to work. I can download them but then I can't do anything with them.
 

For my processor, it autoshuts off at 73C or so because of heat.
 

I'm also not getting a "burn disk image" option
 
the tcas of the i5 2400 is 73'c (source intel ark) anything over this depending on the quality of the sample can cause throttling or a shut down.
some will quite happily go on to the tjmax of 104'c but there is always a potential for damage to the cpu 1s you go over tcas.
it could well be that theres a thermal setting in bios that shuts down the cpu 1s it gets to a certain temp. some boards, have this some dont. i would have to look at the bios to see.
what ever the reason for the sut down 70+ is to warm 60 or less would be better.
maybe the op shgould go into bios and load optomized defaults. making sure he sets stuff like enhanced precision timer and pci-e priority b4 he saves and quits.
my guess is he didnt load the optimum defaults when he got the motherboard and cpu so it may well be over volting if its incorrectly set up.
if you can get windows up and running maybe you can run a simple test. prime 95 blend and then memeory also run superpi 32m. it will tell you very quickly if you have a memory issue. on the 32m test super pi uses a lot of ram and will cause the pc to lock up if the ram is unstable.
prime 95 blend will tell you if your cpu and or memory is unstable.

 

Would hitting the "restore defaults" set my bios to optimum defaults because I am having an issue where the same shutdown occurs around 15 seconds after I open bios, making it a bit hard to mess around with stuff. It took several speed tries to even turn off my autospeed fan so that it would run at full all the time.
 


T_case doesn't have anything to do with monitored core temps man. It's usually 15-20°C lower than the core temperature but you cannot measure it unless you have a thermometer placed between heatsink and the CPU.

Anyway, OP: are you sure you're right clicking the .ISO file and not the .ZIP/.GZ file?

P. S. I can guarantee that new heatsink will not help.
 

Yeh, i'm clicking on the file called mt420.iso
 

Also, what would happen to my computer if I were to straight up by more ram. Would it alter any of my memory or just possibly fix the problem?
 


Thanks for the help but you were wrong about the heatsink. I got the heatsink and it lowered temps by 10-20 degrees. Everything works fine
 
it is entirley possible he got a bad sample that isnt stable up to the tjmax. it often happens if you pick a board that auto over-volts past recommended... my gigiabyte for instance runs my cpu at 1.18125v at stock while a comparable evga runs its cpu voltage at 1.2500v both are running the cpu at stock 2.6-2.8turbo.
thing is i can run my cpu at 3.6 on stock volts but on the evga the same cpu was unstable and throttled the turbo due to heat.
100 is my tjmax but its not recommended you go over 74. mine tops out at 65'c @4.2 while my mates was doing 76 at the same speed.
so yeah not all boards or cpu samples are made equal.