Upgrade power supply

I'm perparing to upgrade my dell dimension power supply from 250W to 400W, not having done this before, what checks and pitfalls should I be aware of??

The new power supply is dell compatible but my worry is the increase in power will damage other computer compenents or not work at all?

Cheers
mbschneikertAsked:
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whiteonlineConnect With a Mentor Commented:
There is no need to worry; the rating of 400W means that the power supply is capable of supplying 400W maximum power. Your computer will pull only as much power as it needs from the power supply to operate.

Just make sure all the connectors that are in place with your current 200W power supply are present when you install thew new one. It may help you to draw a diagram or take pictures before you disconnect anything.
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ComputerTechieConnect With a Mentor Commented:
Noramlly it will not. it will just supply more power to the system as need to make it more stable.

CT
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althakarConnect With a Mentor Commented:
now u can find 450W PSU.. if u increse PSU to 450W then u can add more components.. like additional fan, DVD rom...

intel core 2 duo, Nvidia card requires high power so its better to go for 450W..

dont worry nothign will happen if u change ur PSU from 200 to 450 or 400
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mbschneikertAuthor Commented:
That's great, thanks for all the quick responses....confirms what I thought, though it's always better to check when electricity is involved!!

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