Relationship between Temperature and Performance

So are we on agreement that at 70c the Frame Rate would be the same as at 30c?

This applies to both CPU and GPU, sorry that I confused it with just GPU by using that as an example.

From what everyone's saying, yes. As long as it isn't throttling or unstable, you should theoretically get the same results with a toasty chip as you would with a cold one, albeit with different levels of power consumption, less potential for overclocking, and less lifespan of the component. Good thread, I often wondered this myself. Next up: how much does heat affect stability! :p
 
I don't think that practically speaking you need to worry about it. My reasoning is the extra gain from overclocking yields more performance than you could gain by spending on dropping the temperatures to try and gain similar performance. If indeed dropping the temperature will get you more performance.

The simple answer, overclock it and keep it within specified temp. and enjoy :)
 
So are we on agreement that at 70c the Frame Rate would be the same as at 30c?

This applies to both CPU and GPU, sorry that I confused it with just GPU by using that as an example.

For all intents and purposes yes. But there is always someone like Jokester to enter geek mode and teasingly reveal that, as with most things, in reality it's a bit more complicated, and there are dozens of physical phenomena in play that even experts wont have a full grasp of, so you can never really have a straight black and white answer :) :p

For example, since we're in geek mode now, it doesn't end at Jokester's description of how the cooler CPU gets its data out a fraction of a clock cycle quicker due to minutely faster pulse rises/falls.

Ordokai described two otherwise identical CPUs in 'environments' of 10 and 60 degrees, right? So that would imply the reference quartz crystals that feed the mobo clock generators are also at different temperatures due to their environments. Crystal oscillators have a frequency output that varies slightly with temperature which will feed into the CPU clock generator. So even though set the same in BIOS, the clocks of the two systems wont actually be the same - the cooler CPU might be running something like tens of ppms (parts per million) quicker, or of the order of 0.001% due to the thermal shift in the crystal frequency. They might use temperature compensated oscillator circuits but I wouldn't have thought so for such an uncritical application as a PC mobo, and mine appears to just have simple discrete 25MHz crystals. And of course even if they were compensated, the compensation wouldn't be perfect, etc, etc, etc......

So in actual fact the answer is they wouldn't really be the same, but you'd struggle to measure the difference! Leave the two CPUs running IBT (magically finding a way to ensure running IBT doesn't alter their temperatures from your thought experiment values) and the cooler CPU would gain a few runs in a year or so :)

Well, you did ask :)
 
In conclusion, there will be no noticable short term effects to performance depending on temperature, only long term effects.

My reasoning is the extra gain from overclocking yields more performance than you could gain by spending on dropping the temperatures to try and gain similar performance.
Sorry if I'm getting the wrong end of the stick here, but if my CPU Overclock is at it's limit (because if it goes higher the voltage needed produces temperatures which crash my computer) does this even apply?

Last question of the day (maybe a new one tomorrow :) ) is it worth me getting Vapor-X or is the extra 35 Pounds not worth it? And just how good is the iCooler?
 
I do so love to sip and peek, more is revealed, the world unravels... I gain.

The mind eagerly gobbles up them scrumptious bits of info with overwhelming glee ! Today has been a good day, cheers for that. :p


- Ordokai
 
the cooler CPU might be running something like tens of ppms (parts per million) quicker, or of the order of 0.001% due to the thermal shift in the crystal frequency.

I know you weren't being literal but I think it would be more of the order of 0.00000001%.
 
I'd say it would all depend on cooling method. A Core i7 water-cooled may idle at about 20-30? And the old Pentium's at my school idle about 45 on air :)
 
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