Dilema.

[Robert]

I'm looking to go dual core in september as I really would like the extra multi-tasking capabilities.

1) Go for the 939 4600 (should be £170 after price drops) and crossfire 580 board.

2) Go for conroe, in which case I will need to sell mobo/ram/cpu where as with option one I will only need the cpu and motherboard.

[MSIC]

From personal experience, i love the intel platform. By that i mean specifically the reliability of the chipsets, historically.
I have an Opteron now which is very nice indeed, but the ALi chipset is a bit poop compared to the stability of the 865 chipset i had for my P4. If only AMD made good chipsets....

Now that intel have this supposed fantastic processor, there really shouldnt be a decision in my book.

[Hottentot]

If you have the money go Conroe, but then if you did have the money you would go conroe anyway, if you see what I mean.
I'm in the same dilemma albeit with a S939 system and with the extra annoyance that the cache is being reduced on the AMD dual cores from 1 mb to 512kb.
How long will AMD make S939 dual cores ?

Personally I will save until I can afford conroe, dual core AMD performance gains seem pretty minimal over single cores. At least with conroe you should get a decent performance gain for your money.