I am currently looking to buy a gpu and I really like the look of the stock 770. I heard that it's temperatures can get high. I am concerned because I am looking to get card that will last. I am worried that the long periods of high temperatures with the stock cooler will shorten the lifetime of my card. I am not going to overclock, but I may be going for SLI later.Will the stock cooler decrease the lifetime of my card, or will it be ok? Would a Gigabyte windforce cooler or an Asus cooler increase the lifetime of the card vs the stock, even in SLI?