thanks everyone for all the input,
changed psu to antec earthwatts 650 and gpu to sapphire 5830 1gb.
already got the case now. tempest evo
will look into the rest
Antec psu is very good.
Single 5830 is better choice. Reviews of the newly announced GTX460 show it to perform better than the 5830 and priced better also. Look into availability for you.