Again, this can't be blamed on Firaxis.
If it was a G92 based chip (most 8xxx and 9xxx and some 2xx based Geforce boards) it was only a matter of time before this happened.
The G92 chip has a well published heat cycle problem that eventually kills it, and it happens based on the number of hot/cold cycles, so the more it is used, the sooner it fails.
Read more about it here.
Civ 5 may - due to its high graphics load - have speeded up the failures, but the game can not kill a video card that is functioning properly.
Luckily enough since it was an 8800 that failed it was practically obsolete anyway. If you want the same board you can get one used on eBay for $15.
$130 to $180 will buy you either a GTS450 or a 768mb GTX460, low to mid range boards from the current generation that will perfom much better both stability, and speed wise in this game. (and I might add, have no thermal cycling problems)