Re: Video card problem

Hello Keith

I believe that 70 is hot for that chip... specs below.

Dick

OUTPUT:
+3.3V +5V +12V1 +12V2 +5V SB -12V
Max Load 28.0A* 35A* 17A* 17A 2.0A 1.0A
Min Load 0.5A 0.5A 0.4A 0.4A 0A 0A
Load Reg. +- 3% +-3% +-3% +-3% +-5% +-5%
Ripple V(p-p) 50MV 120MV 120MV 50MV 120MV
* +5V, +3.3V, +12V1, 12v2 maximum output 410 Watts max.
ENVIRONMENTAL:
Operating Temperature 0 to 50degrees (i believe that is Celcius)
Operating Altitude Sea Level 10,000ft.
Non Operating Vibration Operating:10-300Hz, 0.5G, 3axes, 1hr. ea. axis
MTFB 80,000hrs. @ 25degrees (i believe that is Celcius)
Approvals UL, CUL, FCC Class B, CB, TUV

On 10/22/06, Keith Brown <brownk@usask.ca> wrote:
>
>
> Hi folks. This isn't really a linux problem but rather a hardware
> problem ... at least, I think it is.
>
> My son bought the components for a gaming machine this past summer and
> we assembled it and he started using it. The problem is that when he plays
> graphics-intensive games the machine freezes ... not immediately but
> usually after some seemingly random time. If he doesn't play games and
> uses his machine for browsing etc. it behaves normally. During one of his
> gaming sessions when it froze I touched the graphics card and it was HOT!!
> So hot that I involuntarily pulled my hand away. The card is an ATI
> Sapphire X800.
>
> We took the card back and had the vendor test it ... no problems. We
> took the whole system back and had them test it ... no problems. Bring it
> home ... problems. We loaded a program called ATI Tools and measured the
> graphics chip temperature at 70 degrees C.
>
> I took the card back yesterday and was told that this temperature is
> normal for the card operating under load. I was also told that the heat
> sink can be hotter than the chip. Now, I don't know what the normal
> operating temperature for the graphics chip is but I do know that if the
> chip is emitting heat and the heat sink is getting rid of it, the
> temperature of the heat sink cannot possibly be higher than the chip.
> Otherwise the heat flow would be in the other direction. This is basic
> physics of which I am more than a little aware.
>
> Do any of you think that there is, in fact, a problem on the graphics
> card, given what I have said? I have no gaming experience and don't know
> what to expect as far as performance of the higer end cards goes. I feel
> like we're getting the runaround from the 'technicians' ala the old place
> on Quebec Ave. (whose name escapes me at the moment) where Cbits is
> (was?).
>
>
> Dr. Keith Brown
> Department of Chemistry/
> Saskatchewan Structural Sciences Center
> University of Saskatchewan
> Saskatoon, Saskatchewan
>
> -----------------------------------------------------------------------
> Life would be so much easier if we could just look at the source code.
> -----------------------------------------------------------------------
>
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Received on Sun Oct 22 12:36:03 2006