I'm building a new computer but I have no idea how much power I need.
My setup is a bit irregular, so I don't know what to do here.
1 x Intel i5-760 Quad 2.8GHz
1 x Gigabyte P55A-UD3
2 x 2GB DDR3-1333 1.5V CL7 RAM
6 x 7200RPM SATA2 HDs (RAID 5 using Onboard Chipset)
1 x 40GB SSD
1 x DVD-RW Drive
1 x GeForce GTX 460 Fermi Hawk OC 780MHZ 1GB
1 x Card Reader
4 x Cold Cathodes
3 x 120mm LED Fans
Right now, I'm looking at a Corsair TX750.
Is that enough or should I go higher? Any recommendations?
Have you tried going to www.antec.com and using their PSU calculator yet?
If not give it a try then add a few watts, if it tells you 450 buy a 550, if it tells you 550 buy 600. Really I think a good quality 600 -650 watt PSU will run your rig plus a decent video card. Stay away from off brand, OCZ, Corsair, Antec and Seasonic, silverstone are decent brands. Plan to spend between 90 and 120$. Buy modular if possible. Dont be fooled by the number of +12V rails. 1 is fine. Amps in the 45-55 range in that watt class is where you will be.
There was a pretty good round up article posted on this site although most of the PSU were 750 watt plus, it would give you an idea of the best brands.
I used neweggs and wow you're right. with a 5850, your cpu, high end MB and 6 HDD's it says 672 watts. That doesn't include the fans or the lights. Doesnt leave room for much upgrading either. I guess I learned something about multiple hard drive arrays, they cost a lot of power.
750 to 850 it is. http://www.tomshardware.com/reviews/gaming-psu-efficien...
The above link is to that article in case you want to read through the test results since your power requirements are in the same range as the PSU's they tested.
I think 850 would be safe. Your CPU is 95watt at 1.3V stock, OC'd to 3800 at 1.4Volts it's a 150 watt chip. I have no clue if you would be able to OC it that far, I think you would, but am not sure about it neeing the 1.4volts to get there. I think 800-850 is safe. I would be comfortable running that wattage on a top quality PSU with your specs. I think it would give you a little room to add that GFX card later. something you said earlier, adding a X1600, I think that card draws 130 idle and 240 load watts which is roughly the same draw idle/load as a gtx460 768mb. I am not sure why I thought you needed to know that, it seemed relevent when I began typing it.
Completely agree with Dadiggles comment that the best info is here with the experts but have to disagree with the suggestions to run the smaller PSU. Sorry Dadiggle. I thought the same thing as you, i thought a 650 would be over kill but the various power calculators tell us different. I wouldn't want to advise someone to go smaller and be wrong. I often learn the hard way but can't advise others to do th same. If an 850 will cover all the bases and then some and he can afford it he should go with it, IMHO.