Originally Posted by Remacno
... At the moment, I don't even need the new ram sticks. I can transfer over my current 2x 1gb ddr2 240 pins to the new setup...
IMO That would be the only reason not to go for DDR3 right away.
Otherwise at your price tag I'd combine an Athlon II X3 with a Socket AM3 motherboard, 2x1GB DDR3 and a XFX Radeon HD 5750