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This good enough power supply?

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Hey guys.
Just ordered all my parts from newegg, excluding monitor/mouse/keyboard. Wanting to SLI and possibly overclock this thing, and hoping my PSU is good enough for it.


Power Supply:
CORSAIR CMPSU-750TX 750W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply



Video Card: (Using 2 of them)
EVGA 896-P3-1260-AR GeForce GTX 260 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card

RAM:
OCZ 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Triple Channel Kit Desktop Memory Model OCZ3X1333LV6GK

Mother Board:
ASUS P6T LGA 1366 Intel X58 ATX Intel Motherboard

Harddrive:
Western Digital Caviar Black WD6401AALS 640GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM

Processor:
Intel Core i7 920 Nehalem 2.66GHz LGA 1366 130W Quad-Core Processor Model BX80601920

Extra Cooler:
XIGMATEK Dark Knight-S1283V 120mm Long Life Bearing CPU Cooler

DVD Burner:
LG 22X DVD±R DVD Burner Black SATA Model GH22NS30

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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.

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Okay, so any idea about the motherboard question?

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.

Reading through motherboard manual as i'm putting this together, and suggests 600W minimum, and over 1000 if doing anything like even just using 2 vid cards... =/

truth or just telling me to go buy something more expensive?
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Power supply Master

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.

was kinda hoping on sli'ing it...

but can just run them separately and will still run better than just one by itself though yeh?

apparently my PSU is broken somehow... so gotta return that. hopefully can get a refund. and change it for a better one.
Power supply Master

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.
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