Hello. Im thinking of buying a new computor and I've decided for a: p4 2.6 fsb 800. 2x twinmos 512. abit is7-e mobo. a 160gig from maxtor and a radeon 9600 pro. may later buy a dvd burner too but I'll wait a while.
The thing is that the chassi I want only has a 300W power supply. (http://www.sweexeurope.com/product.asp?pid=196)
I dont know if that's to little or maybe some of the other products that does not fit together. I'm kind of a newbie in these areas.
In answer to your question, a 300 watt PSU is strong enough for the system you've put together. However, you should get a stronger one if you ever plan to upgrade to a Radeon 9700 or better graphics card.