PSU Specifications

  Terry Brown 21:36 03 Sep 2006

I have been looking for a new psu, as my one is rated (Labled) as 550w but the output is between 200-230w, and I want to upgrade my system.
I have seen a company that offers a good deal on PSU's, and lists them as follows (all in Ampheres)

Power 450w 550w 650w
+5v 35 40 30
+12 v 17 20 25
-5v 0.5 1 0.5
-12v 0.5 1 0.8
+3.3v 20 30 26
+5v 2 3 2.5

Could anyone advise me the best selection of outputs. I will be running amd processor (possible dual), dvd rewriter, cdrw , external usb drives (own power supply), digital camera card, webcam and other add on's in time.
Thank you

  citadel 21:50 03 Sep 2006

the top quality psu's all are able to run anythng you add on stable rails, seasonic seems to get the best reviews.

  Stuartli 22:56 03 Sep 2006

Quality rather than sheer wattage quantity is the key to a good PSU - another point to possibly note is the heavier the better.

  DieSse 23:36 03 Sep 2006

*my one is rated (Labled) as 550w but the output is between 200-230w,*

If that's all the Wattage you currently are using, then that's all it will be supplying.

What reason have you got to think that it can't supply thee 550W it's rated at?

How did you measure the 200-230W you say it's currently supplying.

  Terry Brown 20:33 04 Sep 2006

I had a friend (Qualified Electrician ) to test it for me on a meter

  User-312386 20:44 04 Sep 2006

thats absolutely correct

No PSU will use the full 550w, it will spread the amperage on the rails.

I don't think i have ever seen a PSU draw the full wattage

  DieSse 20:46 04 Sep 2006

Ask your friend, and he will confirm that the PSU only supplies what your existing sysatem is using. If it's rated to supply up to 550W, then it should supply at a lot more if your updated system needs a lot more.

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