need help with power supply choice..?

Question

for my computer i have a 500w psu currently and it is really really low for my computer. im trying to figure out the max size power supply i should get, minimum watts is 700 according to the Asus power supply calculator.
my build is...
CPU: Intel i7 930
GPU: Asus Nvidia GTX 570
MB: Big Bang Xpower, MSI
Memory: 3x 2gb ddr3 1333
Case: antec 1200 tower (7 fans)
Harddrive: 1x 1TB hard disk memory
external disk drive

need anything else please let me know..
thanks for all the help

Answer 1

1200W ?? MUCH TOO LESS !

i would recommend to order straight a nuclear power plant for it.



when will you ever learn? this setup will run even with a 550W psu if it's of a good quality like Seasonic, Corsair, Antec or XFX. in order to have some headroom for upgrades a 650W quality psu will do. those psu calculators (except the one of extreme.outervision.com) calculate huge reserves in order to mislead customers to buy extremely expensive psu's.



this XFX 650W 80 Plus Bronze Certified will do for sure

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207007&cm_re=xfx_650w_power_supply-_-17-207-007-_-Product



added

even if you had TWO GTX570 an 850W psu would be plenty



many never learn, and some even later :D

Answer 2

639 watt is the total from Antec. 850W will give you enough head room. I would suggest a Antec or Corsair with a 5 year warranty. I do run 2 systems similar to yours, a 920 & 930 on Corsair TX 650Ws without a blip.

Answer 3

you could get any power supply if you care about a MAXIMUM. i would suggest an expensive high quality 80 plus GOLD certified 1000W power supply. it would not be maxed out and at 700 something watts it would run at peak efficiency saving you power. a 1200W would be overkill but it is a waste of money

Answer 4

would go with the Asus calculator tha or 750 watt

Answer 5

check both these links



http://educations.newegg.com/tool/psucalc/index.html

http://extreme.outervision.com/psucalculatorlite.jsp