[geRV]

Theyre selling it cheap because:

A. socket 939 is now being phased out in favour of socket am2.
B. They pretty much have to sell it cheap because the core 2 duo is slapping the ever loving shit out of amd in terms of performance from the low end to the high end.

Even the slowest core 2 chip which is 1.86ghz can be clocked up a bit to be easily on par with amd's fastest chip the fx62.

As for dual core in general, unless you do tons of multitasking\video encoding\photoshoping etc theres not too much to be gained from it. It is handy being able to defrag and run a game or run a virus scan and be able to play a game without it hitching, but actual gameplay benefits are tiny in most cases. If you game at low res like 800x600 then any game making use of dual core will see a bit of a performance bump, but as you increase res the bottleneck shifts to the GPU and even dual core can't do anything about that.

Honestly ive noticed 3 big differences with dual core as opposed to single core:

3d mark 06 scores higher because its optomised for it.

Some apps load faster.

When using premiere, the digieffects aged film effect can be applied to an entire clip and previewed smoothly, used to be it was a slideshow.