Well, if he really had the card and cables installed like that, and excess bending of the cables doesn't seem like the cause of the fire. So it's either one of those "things happen" cases or Gigabyte went with this the wrong supplier for its cables. And if it's the second option, we'll know.
And yeah, it's quite ironic that, of all the possible brands, this has happened with a Gigabyte card.
Please excuse my bad English.
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