Hello, I have got a Radeon x1900 and have noticed that in order to uses it I will need to available power sockets, the problem is that both my power ports are powering hard drives.

I have another power supply, one that will have enough power sockets for my sarta, ide and graphics cards. the problem is it is a 230v and I am currently using a 320 volt.
Will this be a problem? As I do not want to blow up my pc.

(currently 4 hdd 2 sarta 2 ide, nothing else powered. with the new power supply it will run 2 sarta 2 ide and the graphics)

Far more important than either the totall watts, or the count of power connectors is the BRAND of power supply, because the great majority are pretty bad, and some are downright crap.

Here's a "decent" brand, not quite among the top ten or twelve, but quite good, a Cooler Master, advertised as "500 watts" and on sale for only $43 plus shipping cost.

Never having heard of any nation or region using 320 Volt municipal power, I have to guess that you were trying to use a PSU sold by its wattage count of 320. That is far too puny for any of the Radeon X1900s, including the GT model (slowest, with the lowest power requirement). It is the amperage that counts for video, and it is the 12 Volt circuits you need to match to the graphics.