Just want to know if power supply will be able to handle this. If can handle it being SLI'd. If can handle being SLI'd and overclocked. And rough estimate how long motherboard would last being overclocked and how long not being overclocked.
Kinda is only thing wondering about before make final decision about overclocking it or not.
edit: also curious as to how cool my system would likely be running. Dont want anything to overheat, and read that the extra cooler seems to run slightly loud when on medium/max. so, would run it low if temp would still be rather low if possible.
Two GTX 260 video cards operating in dual SLI mode use a total of 380 watts and 32 amps at full load. The Corsair TX750 has a single large 12 volt rail rated at 60 amps. It can handle two video cards without any problem.
Total power requirements are usually overestimated because there are a lot of cheap, low quality psu's that people insist on buying.
mamw93 - As cjl already pointed out, that's overkill! The Corsair TX750 can definitely handle two GTX 260 video cards operating in dual SLI mode. The two cards combined use a total of 32 amps at full load. The source of the information is a recent Tom's Hardware article about actual video card power usage. The technical information is on page 6 of the article.