text: to dual core, or not to dual core. that is the qn? hey, follow up on my previous qn.  i am currently using an amd athlon xp 2800+ system. overclocked to 2.3ghz (not sure abt the cache, if there is, i roughly think it's abt 512kb) 768mb ram and 8xagp 256mb ati radeon 9600 power colour.  is it worth upgrading to dual core d805 2.66ghz? about 2mb cache i think.  would there be an improvement in performance of my game? if so, roughly what's the percentage in improvement? considering the same amount of ram? if you currently have xp 2800, there are many other cpu's with same price as dual core 805 that can boost your gaming speed.  don't get confuse about speed and multi-tasking.    for $100, you can buy a dual-core 805 or a pentium 4 541 3.2ghz 800mhz.  the matter of choice really rely on what you use the system for.  dual-core can handle multitasking extremely well.  for instant, it allow you encode a dvd and playing game at the same time.  the pentium 541 in the other hand will significantly speed up single task program, like gamming machine.   so if multi-tasking is not important, consider a single core.  good luck