guys your thoughts

is it worth it at an extra cost after selling to go from my DDR2 based

dka79gx platinum
x4 920 at 3.6 (probably can do more have not bothered)
4gb Gskill PC8500

to a

790FX-GD70
AM3 X2 550 (hopes to unlock)
4gb 1600 DDR3

will the x2 550 perform as well at 3.6 vs the true quad overclocked to the same? second I guess there is the potential of no success unlocking depending on stepping I get for the 550 but being left with a dual core that will hopefully do 3.9

would it be smarter to leave what I have alone for a while and if anything drop a 955 into it later??

video card wise I will leave my crossfire 3870's in a bit longer before flogging them....