Is an 850w PSU able to run...

...Is an 850w PSU able to run...

-x2 GTX 470 OC'd to 800/1700 (1.087v)
-i5-750 OC'd to 3.411ghz (V-core 1.27, cant remember they other voltages)
-x2 2Gb 1600mhz RAM (I think its 1.6v)
-DVD/CD burner drive
-Bluray Drive
-x1 320Gb 7200rpm HDD
-x2 1TB 5400rpm Green HDD
-x4 120mm Fan (3 w/ LED's)
-x2 140mm Fan

I went to eXtreme PSU calculator and it said that I would be using 650w's but that does not sound right to me, so I jus wanted to ask around and make sure that I am not putting to much strain on my PSU.
6 answers Last reply Best Answer
More about 850w
  1. A good 850 watt PSU can put out about 70 amps of 12 volt power. Two GTX470's will use a bit less than 30 amps. The other big consumer of power is the CPU. Figure about 10 amps. That will leave plenty of power for the rest of the system.

    I think that a 650 watt PSU would be cutting it kind of close.
  2. I have an 850w and just wanted to make sure when I get my bluray drive, extra gtx 470 and extra hdd's that I would have enough power to run them... and maybe some cold cathodes.
  3. depends on what brand 850
  4. Best answer
    will be fine no problem
  5. Best answer selected by oooen1gmaooo.
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