my current config is:
2x wd caviar sata2 hdd
video card->soon to be changed to x1950 xtx
on the pci slot: lan card + creative audigy (with the IR front rack)
currently have an 550W powerlink power supply (friend says it`s actually foxconn - it has 3 fans)
will this psu be enough with the new card or should i change it.
Don't worry about the 4 pin Molex on the MB, That is there to supply extra power to the PCI-X slots (ie if you have 2, or more video cards). That is unless your card's have external power connectors. (then this Molex connection is completely useless anyway) However I would have waited on the 4670 cards ($80 on newegg now)
I have that same board using 2 HD4850 in crossfire and I'm not connecting anything to that adaptor. There is no need unless the card draws power from the motherboard no the power supply. Also you might want to look at a different card X1950XTX arre old tech. If you pay About $50 for it then do otherwise look for something in th 8800GS and up in Nvidia or HD3870 and up in Ati.