Originally posted by: Frackal
Go for it, I came from 4400+ and its a superb upgrade. With a decent OC on the C2D (say 3.6ghz) you'll have a CPU that performs in the neighborhood of double the speed as your 4400+ at 2.4-2.6ghz
I would hardly call 3.6ghz a 'decent oc' for an E6600. that is a full 50% over stock speeds, and the E6600s have not been performing well with 965 chipsets (in fact, all the conroe chips don't seem to do too well with 965, while the allendale cores seem to love the 965s). AND that ECS board is not a great overclocker.
expecting anything 400 FSB seems a bit optimistic. not totally impossible, or even outrageous, but certainly not something i would take for granted.
however, for the OP. that is certainly a very nice price for the E6600 + mobo combination, and the E6600, even at stock, is learly a better chip than your 4400+ (which is still no slouch).
If you think you can sell your 4400+ for decent money, and thusly upgrade to C2D at a marginal cost of $150 or so dollars, or if you could really use two powerful computers in the house, then go for it. but if your old, and still very good, system is just going to be lying around the house, then I don't think the upgrade is worth the money.
EDIT edited to correct my crappy typing...