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Damaged GPU on crossfire

Tags:
  • GPUs
  • Crossfire
  • Graphics
Last response: in Graphics & Displays
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November 18, 2013 6:06:20 AM

I have 2 HD3870 gpus an old and a bit damaged (showed some graphical glitches from time to time) and one that works correctly. Can I use the damaged one to support the working one in crossfire without it messing the graphics and such (I suppose it'll have less work load if supporting the good one)?

More about : damaged gpu crossfire

November 18, 2013 6:24:11 AM

You will probably still get some graphical glitches, but I think I am of the mindset that if you already have the hardware why not just give it a shot? You can always take the second card back out without any real hassle except maybe removing or hiding the PCI-E power cables if the cards need them.
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November 18, 2013 6:28:02 AM

I would get the damaged one sorted out first. (You may be able to downclock it and get it stable.) If downclocking works, you will need to run both cards at the slower clock speed, but two underclocked cards will probably be faster than a single card at full speed.

If you can't get it to work right before crossfire, I doubt it will improve after crossfire.

I would not expect it to damage the good card regardless.

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November 18, 2013 6:29:45 AM

Well you definitely do not want to throw in a faulty gpu. The first reason is because it may corrupt the second card as well, since it won't be able to properly communicate with the second card. Also, your performance might actually drop so prefer to just stick with the good card. Finally, the good card might as well downgrade to poorer performances due to the faulty card. Their is always the chance for upgrading on the other hand. You can find good cheap solutions on the market, like the HD6670, which can do your job pretty good, since I assume you are not a heavy gamer.

Hope this helps!
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November 18, 2013 7:28:45 AM

Gate9er said:
Well you definitely do not want to throw in a faulty gpu. The first reason is because it may corrupt the second card as well, since it won't be able to properly communicate with the second card.


Lets be clear on this, by "corrupt" the second card, you don't mean damage the other card.

Unless the bad card can cause the good card to overheat and/or overvolt, (which it can't do) the instability that it may happen will go away once the bad card is stabilized (downclocked) or removed.

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