1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

CPU Temps

Discussion in 'Overclocking & Cooling' started by TheMailMan78, Jan 14, 2009.

  1. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,194 (7.74/day)
    Thanks Received:
    7,711
    Well I see a lot of people asking what safe temperatures for their CPUs are. It would be nice to have a sticky somewhere like the PSU guide as to what CPUs minimum and maximum stock temperatures are. Maybe even have an OC section. It would be nice to have a quick reference.
     
  2. Castiel

    Castiel

    Joined:
    May 5, 2008
    Messages:
    3,319 (1.38/day)
    Thanks Received:
    310
    I 2nd that!
     
  3. crtecha

    crtecha New Member

    Joined:
    Dec 8, 2008
    Messages:
    2,407 (1.10/day)
    Thanks Received:
    207
    Location:
    ipsay meechigan
    I would really appreciate it if we had a something like this.
     
    Last edited: Jan 26, 2009
  4. Polaris573

    Polaris573 Senior Moderator

    Joined:
    Feb 26, 2005
    Messages:
    4,281 (1.20/day)
    Thanks Received:
    718
    Location:
    Little Rock, USA
    Make it nice, make it accurate, and I'll sticky it.

    Don't make one word posts. At least say "I'll second that" like Castiel did.
     
    crtecha says thanks.
  5. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,194 (7.74/day)
    Thanks Received:
    7,711
    Sounds good. Ill work on it.
     
  6. erocker

    erocker Super Moderator Staff Member

    Joined:
    Jul 19, 2006
    Messages:
    39,901 (13.06/day)
    Thanks Received:
    14,309
    You should collarborate with UncleWebb on the subject. He likes to abuse CPU's and see what they can really take.:)
     
  7. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,194 (7.74/day)
    Thanks Received:
    7,711
    Iv never met UncleWebb. He wont touch me or anything.
     
  8. erocker

    erocker Super Moderator Staff Member

    Joined:
    Jul 19, 2006
    Messages:
    39,901 (13.06/day)
    Thanks Received:
    14,309
    Maybe if you're lucky!:D But he designed RealTemp. Have a look in the RealTemp discussion forum.
     
  9. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,194 (7.74/day)
    Thanks Received:
    7,711
    Is he a member of TPU?
     
  10. erocker

    erocker Super Moderator Staff Member

    Joined:
    Jul 19, 2006
    Messages:
    39,901 (13.06/day)
    Thanks Received:
    14,309
    TheMailMan78 says thanks.
  11. TheMailMan78

    TheMailMan78 Big Member

    Joined:
    Jun 3, 2007
    Messages:
    21,194 (7.74/day)
    Thanks Received:
    7,711
    I just sent him a PM over at xtreamsystems.
     
  12. unclewebb

    unclewebb RealTemp Author

    Joined:
    Jun 1, 2008
    Messages:
    953 (0.40/day)
    Thanks Received:
    424
    I often times here about what is a "safe" temperature and for me that is a very subjective question.

    Here's my E8400 running Prime 95 Small FFTs for 3 hours while over volted and overclocked with the CPU fan umplugged.

    [​IMG]

    I don't recommend doing this 24/7 but Intel CPUs seem to run happily at pretty much any temperature.

    When you are fully overclocked, you're going to have to leave yourself some more head room than that to maintain Prime stability.
    For me what is a safe temperature can be summed up like this, "As long as your computer is stable, you don't have to give a second thought to your CPU temperature."
     
    sneekypeet says thanks.
  13. spearman914

    spearman914 New Member

    Joined:
    Apr 14, 2008
    Messages:
    3,339 (1.38/day)
    Thanks Received:
    502
    Location:
    Brooklyn, New York 11223
    Wouldn't that thing overheat alreaddy???!?!
     
  14. Jakl

    Jakl New Member

    Joined:
    Nov 18, 2008
    Messages:
    515 (0.23/day)
    Thanks Received:
    50
    Location:
    Home
    Whoa... 98*C !?!?!?!?!?! :wtf: You can cook Bacon on that...
     
  15. Marineborn

    Marineborn New Member

    Joined:
    Jan 17, 2009
    Messages:
    2,144 (1.00/day)
    Thanks Received:
    312
    holy ballsmacks thats hot...lol
     
  16. MRCL

    MRCL

    Joined:
    May 31, 2008
    Messages:
    5,791 (2.44/day)
    Thanks Received:
    860
    Location:
    Switzerland, Heart of Europe
    Such a chart would be very nice indeed.

    @ unclewebb

    Well, you certainly don't need an USB coffe cup warmer anymore :D
     
  17. cdawall where the hell are my stars

    Joined:
    Jul 23, 2006
    Messages:
    20,683 (6.78/day)
    Thanks Received:
    2,984
    Location:
    some AF base
    from what i have heard from some intel based sources is the chips are tested to run several years @75C 100% load so i never worry about temps if it runs then its cool by me



    but then again i pushed 2v through 4 65nm celerons on water just for the hell of it
     
  18. unclewebb

    unclewebb RealTemp Author

    Joined:
    Jun 1, 2008
    Messages:
    953 (0.40/day)
    Thanks Received:
    424
    That graph is a perfect example of the effectiveness of Intel thermal throttling. It's definitely a good idea to have TM1 and TM2 turned on in the bios. After 3 hours, only one core of this CPU hit 100C and that happened only once. As the temperature hit 98C, thermal throttling would kick in and drop the multiplier down to 6, which cooled off the processor. (Relatively speaking of course!)

    Either the CPU Tcase sensor is overly optimistic reporting 107C, or the core temperatures are reading a little on the low side. I trust the core temperature sensors at these temperatures more than Tcase readings that are usually bastardized by the bios.

    The multiplier is rapidly cycled a zillion times a second to keep the temperature from getting too out of control. If TM1 and TM2 aren't enabled then it would have gone over 100C. Thermal shut down is at approximately 125C but the most I've ever been able to see is 122C. ;)
     
    Jakl and spearman914 say thanks.
  19. spearman914

    spearman914 New Member

    Joined:
    Apr 14, 2008
    Messages:
    3,339 (1.38/day)
    Thanks Received:
    502
    Location:
    Brooklyn, New York 11223
    Thx for the info!!! Ur smart. lol :D
     
  20. Jakl

    Jakl New Member

    Joined:
    Nov 18, 2008
    Messages:
    515 (0.23/day)
    Thanks Received:
    50
    Location:
    Home
    Interesting... this is the first time I've seem someone pushing the CPU as high as it can go... and I am truly amazed of how high and hot those go . . .

    Thx Dude! :toast:
     
  21. unclewebb

    unclewebb RealTemp Author

    Joined:
    Jun 1, 2008
    Messages:
    953 (0.40/day)
    Thanks Received:
    424
    With this exact same chip on the same board, etc. I ran Prime stable for 9+ hours without any problems at 4050 MHz with the CPU fan on. After I proved that it was nice and stable I decided to pull the heatsink fan to let it warm up and to see what would happen. Core 0 reported an error about 5 minutes later when it reached 77C. (I'll post a SpeedFan graph later of this test.)

    With this E8400, at 3600 MHz, core temperature is nothing you have to be concerned with. When you are pushing your chip harder with more MHz, then you are forced to keep it cool or you'll lose Prime stability. These CPUs are limited. They can only take so much abuse before they say, "OK, that's enough!" :D

    100C doesn't seem to hurt them but there's no way you'll get your maximum overclock at that temperature. This E8400 can run perfectly stable at 3600 MHz at this temperature but there's no way it can run stable at 4000 MHz at the same temperature.

    That's why I always recommend letting stability be your guide and not core temperature. If you are pushing an Intel chip too hard, it will let you know either by erroring out in Prime or it might re-boot while running Prime. Either way you'll know that you've hit the wall. When you hit the edge of this thermal envelope, you'll either need to back off the MHz or find a way to make your CPU run cooler. Some magic number like 75C or 80C is "bad" is not really true. For me, the only thing that is bad is losing stability.

    After reading the above, I can think of a few people that might not agree!
     
    flyin15sec and spearman914 say thanks.
  22. Haytch

    Haytch New Member

    Joined:
    Apr 7, 2008
    Messages:
    510 (0.21/day)
    Thanks Received:
    28
    Location:
    Australia
    100% Load @ 75c Intel testing is probably why they dont release CPU's running at 4Ghz stock.
    We will all appreciate some kind of accurate guide.
     
  23. spearman914

    spearman914 New Member

    Joined:
    Apr 14, 2008
    Messages:
    3,339 (1.38/day)
    Thanks Received:
    502
    Location:
    Brooklyn, New York 11223
    If intel did release 4GHz stock cpu's then the whole point of ocing will be dead.
     
  24. crtecha

    crtecha New Member

    Joined:
    Dec 8, 2008
    Messages:
    2,407 (1.10/day)
    Thanks Received:
    207
    Location:
    ipsay meechigan
    Im sure Id try to get it to 5.5ghz hahahhaah
     
  25. madmanjohn

    madmanjohn New Member

    Joined:
    Jan 24, 2009
    Messages:
    213 (0.10/day)
    Thanks Received:
    26
    Location:
    midwestern IL-WI stateline area
    all this has got me wondering--

    never been big on oc' but i watched a q6600 recently die on the job and a phenom 9800 in an asus eat its lunch taking its place on stage running lights

    :wtf:

    maybe its time i tried another intel again:rockout:
     

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)

Share This Page