1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

    Dismiss Notice

GPU operating temperatures

Discussion in 'Graphics Cards' started by CurlyWhirly, 27 Feb 2006.

  1. CurlyWhirly

    Wise Guy

    Joined: 24 May 2003

    Posts: 1,429

    Location: UK

    I think I read somewhere that GPU's can operate at up to 100C :eek:

    This is quite a bit hotter than most CPU's run at so I was wondering whether the GPU core would be manufactured in a radically different way to a processor die?

    I assume that they are composed of copper like most processors are?
    Also, is it true that the GPU core shuts down when dangerous temperatures are reached, say 100C upwards?

    I'm just curious :o
     
  2. semi-pro waster

    Man of Honour

    Joined: 27 Sep 2004

    Posts: 25,829

    Location: Glasgow

    The GPU doesn't shut down as such, it throttles back to allow itself to cool and the temperature threshold on the 6800series cards is set to 120 deg C by Nvidia as standard. I'd be worried at anything significantly over 90 deg C though.

    Not sure about the exact composition though, I'd always assumed that the manufacturing process wasn't any majorly different to that of a CPU but I have never looked into it.
     
  3. CurlyWhirly

    Wise Guy

    Joined: 24 May 2003

    Posts: 1,429

    Location: UK

    That works in a similar way to the Pentiums which also had this safety feature then.

    It's just that I have overclocked my X850 XT and when fully loaded the GPU temperature gets to around 75C but fortunately doesn't get any hotter than that.
    This I assume is okay judging by your comment that a GPU shouldn't go above 90C.
     
  4. semi-pro waster

    Man of Honour

    Joined: 27 Sep 2004

    Posts: 25,829

    Location: Glasgow

    I wouldn't worry too much about 75 deg C at all, my experience is more with the 6800series but that is still well within acceptable limits from what I know of ATI cards. Maybe an X850 owner will be able to confirm but I'm pretty sure you are absolutely fine with that :)
     
  5. CurlyWhirly

    Wise Guy

    Joined: 24 May 2003

    Posts: 1,429

    Location: UK

    Thanks for your feedback semi-pro waster :)
     
  6. Dutch Guy

    Capodecina

    Joined: 18 Oct 2002

    Posts: 24,563

    Location: Amsterdam,The Netherlands

    My old 6800NU ran at 103C fine (case with almost no casefans and a lot of dust in the cooler :o )

    GPU's can operate at higher temperatures than CPU's, a nVidia card has a throttle temperature of 115C while a CPU throttles well below 100C and becomes unstable a lot sooner.

    It's not because a CPU is more complex as GPU's have a lot more transistors than a CPU, it propably has to do with the kind of data both have to proccess and most likely the calculations done by the CPU are more prone to faults :confused:
     
  7. CurlyWhirly

    Wise Guy

    Joined: 24 May 2003

    Posts: 1,429

    Location: UK

    I would have thought that data is data irrespective of whether it's graphics data or program/data data (if you see what I mean :rolleyes: )

    Thanks for your feedback though Dutch Guy :)
     
  8. Dutch Guy

    Capodecina

    Joined: 18 Oct 2002

    Posts: 24,563

    Location: Amsterdam,The Netherlands

    Perhaps if the CPU makes a faulty calculation it messes up a program but when a GPU makes a faulty calculation all that happens is a pixel that isn't displayed correctly :confused:
     
  9. RichDuffy

    Gangster

    Joined: 8 Jun 2004

    Posts: 389

    My 6600GT regularly goes up as far as 105C under load - nothing to worry about, as I expect such high temperatures because it's passively cooled.
     
  10. CurlyWhirly

    Wise Guy

    Joined: 24 May 2003

    Posts: 1,429

    Location: UK

    That makes sense to me.
    Thanks.


    Thanks. I now see that 75C (under load) is nothing to worry about!