I would usually say bigger better faster always, but in this case, the question is really, what do you expect to get? I would think that currently with Vista, or Windows 7, the speed differences you actually see will be slight at best. Maybe when multitasking will Intel do better here, but then the next question is Ram and Graphics, and how much.
If money is the driving factor here, Dual Core will serve your needs fine for the very short term future.
Well the thing is they're all in the same range ($500-$700 for the comps with the CPUs)......so yeah I guess I'll run with the quads. But what are these i3s, i5s, and i7s I've heard of?
I was less excited about the i7's performance at first than the system overall performance. You have to account for the fact that the i7 or LGA1366 platform is a great leap in the entire Core architecture. I was excited to get a onboard memory controller (something AMD had first), I was excited to get triple channel ram in the cutting edge DDR3 variety, and I was ecstatic that my board plays nice with both SLI and Crossfire. When the system was finished however I was unprepared for the more than impressive performance of the chip itself performing tasks that were previously painful to watch. MediaCoder for example is a up and coming transcoding platform that is one of the few that truly supports multithreading (no it doesn't use multiple cores to process several videos, it parallels) this is pertinent to all of us PMP fanatics (iPod, Zen, Archos, etc.) it can takes hours for us to get our precious shows in these restrictive formats on a single or dual core CPU and that just won't work when we are in a hurry. I have seen iPod touch transcodes at the top of the hardware limits encode at over 150FPS, that is a complete format change and it is utterly sick. So you decide, is it worth it to have quad core performance?