For bryce I would recommend the fastest single core cpu you can get. (dual core isnt supported by bryce so that would be a waste of the extra money 'cuz bryce would only use one core) If you're using more professional software that does make use of the dual-core cpu's ofcourse a dual-core would be fastest for those programs. An additional performance enhancer would be the amount of RAM in your pc. Computergraphics tend to use lots and lots of RAM. I currently use a laptop for 3d rendering and just earlier this week we got our alienware laptop in at the office (workstation is still on its way) It's one heavy laptop though! not one u'd like to carry under ur arm all day. but yea, there are performance laptops that will do perfectly better then the pc's of most users on this forum :-P However u put it though a desktop is cheaper then a laptop.

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