which psu to pick

OCZ GameXStream 700W http://www.ncix.com/products/index.php?sku=18185&promoid=1046
OCZ PowerStream 520W http://www.ncix.com/products/index.php?sku=17553&promoid=1046
Ultra / X2 / 550-Watt http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1273353&sku=ULT31852

which of the 3 to pick?

my pc setup is:
Intel Core2 Duo E6300,
Gigabyte P965 S3,
2GB Corsair XMS2 PC5400 DDR2 667,
XFX Geforce 7600 GT XXX,
320GB HDD,
dvd, cdrw rom
2 120mm case fans

1 more question, does using a higher watts psu effects power costs to increase ?
4 answers Last reply
More about which pick
  1. i just made a tread similar to yours, but i'm looking for something with 700w's. i'm just not sure which brand would be the best buy, from looking at the links you put the ocz i think is the best one. i'm using a 600w from my old rig and after adding a lot of fans and voltage to the cpu it just isn't enough any more also its a cheap brand.
  2. Quote:
    1 more question, does using a higher watts psu effects power costs to increase ?


    a psu with 80-85% efficiency should draw just slightly more power.
  3. well that makes sense, now i know. good explanation...
  4. really nice explanations.
    thanks. now i know how the power thing works, since i heard the more watts the psu gots, the higher the power costs is...
    which of the 3 should i pick for a stable and reliable psu that wont die on me?
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