Mad Cow said:
If you voltmod, and get an avarage temp that your card temp will go upto under load(stock), (2 or 3 hours hardcore demanding games) then whatever you card roughly runs at under these extreme loads then you know how hot it runs unmodded.
If you voltmod, and you find that the temps go alot high above the original stock temps then reduce the vmod voltage. I would say that 70-75 degs is about the limit if you want you card to last a fair few years
Some people would argue with this, im not saying they are wrong but its all about personal preference. remember, a properly cooled card thats modded can last longer than a stock card thats unmodded with stock cooler, because it runs cooler. And for how dangerous it is, if your cards running at 80+ degrees, (unless its something stupidly hot) then dont panic, the damage can only be done long term over long periods like weeks etc.
On the flashing note.... I dont see why you would need to flash your GTX... you cant unlock anything, the only thing you could do is change the clocks in the bios, and then reflash it. This would save having to set the clocks every time you install the drivers
.... No point in flashing that beast really
3.6 cpu vid card at 585/635
you can stop there don't want you to catch up to me .. lol 
