Interesting However IMO 2 cores is fine for now :
More here :http://www.theinquirer.net/default.aspx?article=35507
AFTER PLAYING second fiddle to AMD in the enthusiast market for some years, Chipzilla came crushing down on the upstart this year. And, so far, AMD has still to respond to any of the technological and product advancements that Chipzilla is offering.
Intel's Core 2 marchitecture pretty much captured hearts of IT enthusiasts world-wide. We were impressed with the amount of performance and overclockability that Conroe offered us from day one.
While folks at DAAMIT will claim that Kentsfield is not a true quad-core, we feel that approach is pretty daft, since AMD will be following suit in a couple of weeks time. AMD will also use two dies to get quad., but each die is placed on one Opteron socket - and you need a new motherboard and so on and so on... Intel just uses Core Multiplexing tech to get the two dies working on the same substrate and sharing a system bus.