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On Mon, 18 Aug 2008 17:25:30 +0200, Invisible <voi### [at] dev null> wrote:
>>>> 4. Hardware fault on the graphics card (eg bad RAM)
>>>
>>> Surely that's a rather rare failure mode on a graphics card?
>> Not if it has been overheating.
>
> True, but since the GPU generates far more heat than a block of RAM
> does...
The GPU also has far better cooling. Modern high-performance RAM can get
rather hot, particularly video RAM.
>> Have you checked the temperature of the video RAM?
>
> I don't have a way to do that.
Try touching a VRAM chip (very briefly) while the game is running.
--
FE
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>> True, but since the GPU generates far more heat than a block of RAM
>> does...
>
> The GPU also has far better cooling. Modern high-performance RAM can get
> rather hot, particularly video RAM.
Well, if they don't bother fitting cooling to a component, that
presumably means they don't think it's necessary. ;-)
> Try touching a VRAM chip (very briefly) while the game is running.
Wouldn't simply having the case open radically alter the operating
temperature of the components inside? ;-)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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scott wrote:
> Actual chip core temperature of 55 degrees seems fine to me,
Compare it to your CPU temperature. I dunno about my GPU, but my CPU is
close to 55 just sitting idle.
--
Darren New / San Diego, CA, USA (PST)
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On Mon, 18 Aug 2008 17:39:57 +0200, Invisible <voi### [at] devnull> wrote:
>>> True, but since the GPU generates far more heat than a block of RAM
>>> does...
>> The GPU also has far better cooling. Modern high-performance RAM can
>> get rather hot, particularly video RAM.
>
> Well, if they don't bother fitting cooling to a component, that
> presumably means they don't think it's necessary. ;-)
It can also mean that they chose not to include VRAM coolers because it is
cheaper that way. Whether they are necessary or not depends on many
factors outside the control of video card designers. Also, simply having a
cooler is not the same as having an effective cooler.
>> Try touching a VRAM chip (very briefly) while the game is running.
>
> Wouldn't simply having the case open radically alter the operating
> temperature of the components inside? ;-)
It can change the temperature, but not radically, unless you are talking
about the video card casing. In any event I doubt you could get an
accurate temperature reading using only your fingertip under any
circumstances. The point of the exercise is simply to get a feel for how
hot those things get.
--
FE
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>> Actual chip core temperature of 55 degrees seems fine to me,
>
> Compare it to your CPU temperature. I dunno about my GPU, but my CPU is
> close to 55 just sitting idle.
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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>>> Try touching a VRAM chip (very briefly) while the game is running.
>>
>> Wouldn't simply having the case open radically alter the operating
>> temperature of the components inside? ;-)
>
> It can change the temperature, but not radically, unless you are talking
> about the video card casing. In any event I doubt you could get an
> accurate temperature reading using only your fingertip under any
> circumstances. The point of the exercise is simply to get a feel for how
> hot those things get.
Ooo... Maybe I should use my IR thermometer? :-D
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Invisible wrote:
>> Try touching a VRAM chip (very briefly) while the game is running.
>
> Wouldn't simply having the case open radically alter the operating
> temperature of the components inside? ;-)
Also, I've read somewhere that that is a very bad thing to do. (Touch an
operating chip to check its temperature) it has something to do with
heat saturation at the point of contact and can cause a chip that was
operating within its parameters to actually overheat.
Of course, that's just hearsay...
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Invisible wrote:
>
> Ooo... Maybe I should use my IR thermometer? :-D
>
Now you're thinking :)
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Chambers wrote:
> Very hot to touch, not so hot to run. IIRC, most chips are fine up to
> 65-70C, and several can go higher w/o a problem.
My Pentium IV used to be at 72C constantly (full load; I never let a CPU
idle :P). According to specs, 75C is the limit.
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>> Compare it to your CPU temperature. I dunno about my GPU, but my CPU is
>> close to 55 just sitting idle.
>
Where is that temperature measured though?
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