Is my psu sufficient for my pc ?

I have a cooler master rs 400 psar j3 400w psu with dual 12v rails with 17amp on each of them

and here are my pc specs

intel core 2 duo e7500 @ 2.93ghz
ram-2gb ddr2 800mhz
hdd - 320 gb 7200 rpm
gpu - sapphire radeon hd 6670
mobo - asus p5kpl am in
and please explain me what does dual 12v rails mean because i think 17amp on a single 12v rail is very low but dual rail is giving me some hope .
6 answers Last reply Best Answer
More about sufficient
  1. Your psu is fine for that low end graphics card, the only case where you would need a higher amperage on the 12v rail's is if you where using a mid to high end graphics card that requires 2 6-8 pin periphrial connectors.
  2. It is enough for your specs although it is not the best! What you need to look at is the combined rating Which is 276watts/12volts = 23amps!
  3. Ok let's assume that its not the best psu but can it handle my pc for 1 or 2 years because i'm not thinking about any upgrading or overclocking i will upgrade my whole system after 1 or 2 years so will my psu be enough for 2 years as i also has warranty of 2 years .
  4. Best answer
    Yes it can! The only problem is the CM reputation not delivering promised power but you will not be pulling max load out of that PSU since typical load for a system like yours with HD6670 is just around 200watts!
  5. Thanks man i really appreciate your help .
  6. Best answer selected by Anurag punk.
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