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SLI GTX-570's - Second slot card hotter and running at a higher voltage than first?

Tags:
  • Gtx
  • SLI
  • Graphics
Last response: in Graphics & Displays
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June 18, 2014 11:56:51 AM

For as long as I've had this set-up, the bottom card has consistently run 10 degrees hotter than the first, even in idle.

I randomly had a look at my desktop GPU gadget and noticed for the first time that one card is running at 0.91V while the hotter card is running at 0.96V.

Can anyone make sense of this? They should be running exactly the same right? Especially at idle..

More about : sli gtx 570 slot card hotter running higher voltage

June 18, 2014 12:26:31 PM

Not necessarily .
Every piece of silicone is different.
Each chip is tested to find its Ideal frequency and voltage.
The better the silicone the lower the voltage and higher the frequency it will run at. So manufacturers set a range of values. So that more chips are usable as higher end parts.
The ones that fall outside this range are then designated as lower end parts.
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June 19, 2014 7:38:49 PM

Unolocogringo said:
The ones that fall outside this range are then designated as lower end parts.


I forgot to mention that the lower voltage card is Asus while the Higher voltage is Gainward. That would be a likely cause?
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Best solution

June 20, 2014 4:52:03 AM

If they have aftermarket coolers the Asus models have some very good coolers. Gainward does too.
It depends on the model.
The ones with the reference cooler, having one centrifugal fan usually run hotter than ones with 2 or 3 fan after market coolers.
My top card is always 3-7 degrees hotter than the bottom card.
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June 21, 2014 3:20:14 AM

Both cards have 2 fans. The Asus card is literally twice as thick though, so I'm sure it's got some better cooling factors tucked away under it. It's good to know that I'm not the only one with one card running hotter than the other,
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