Aono :
Trouble is E6850 and Q6600 are the same price.
...not really true if you consider overclocking and cooling. To overclock them to the same speed (which you won't be able to do - the Duo with it's new G0 stepping will clock much better than the older stepping Quad), would require a more expensive cooling solution on the Quad, making it more expensive, overall.
Aono :
The way I see at the moment is this when choosing between them:
1. Are you a gamer?
If yes then go to 2.
If no then get a Q6600.
2. Will you be mostly playing current gen and last gen games or next gen games?
If Current + Last gen get a E6850 (5-15% better than Q6600 in this area)*
If Next gen get a Q6600 (Up to 80% better than a E6850 in this area)*
*Percentages very rough guestimates based on the benches I have seen so far... there will always be exceptions though.
I guess I see it a bit differently than listed above, for a few reasons...
- if you have a few apps (be it games, 3D rendering, media encoding, folding, whatever) that you use often and can already take advantage of multiple cores and you don't mind your system running hotter/slower for everything else - then get a Quad.
- Otherwise, the newer stepping Duos are more than capable for most users needs for the next few years, will overclock higher, run cooler and cost less at the same time.
- 80% better?? That's either highly specific to some game where it won't mean an 80% better playing experiance to start with or just highly unrealistic. Game developers will start migrating to running more threads where it makes sense, but they can't start writing games that
require a Quad to run. Either way, this migration will take time. I'd consider "80% better" to
be the exception, not the rule
. But hey, check back with me 3-4 years from now and I might agree.
...I expect the picture to change with favor swinging more towards Quads, a little bit once they get a newer stepping and again once the move to 45nm is made (lower power consumption, less heat), so if you think you could utilize a quad, it might still be better to wait if you're not in any hurry.