one 2.8 or two 2.8?

I've considered to buy the new MP for weeks, and finally come down to choose one 2.8 or two.

I use MP for daily activity, photo editing and potential video editing for my families later and windows.

I want to eliminate the possibility of switching to iMac, even I know iMac will satisfy me too.

Is it worth to add the other processor now for $400+ extra or get it later(same as memory strategies)?

Thanks

I'm not so sure you can get a 2nd cpu later as they make the mother boards for one or two or whatever when they make your MP. I think someone else will more more about this as I'm only going off what I heard.

For $400, I would think it is a good investment. Even if today's software doesn't make use of all 8 cores, tomorrow's may. This is very much related to the $400 number. If that number was, say, $800, my advice would be different, but for $400, you may as well max out your MP for the best future use.

Just like I tell everyone else, get the most machine you can afford.

I dunno, I'm wrestling with this now, and leaning towards one CPU.

The thing is, I'm fairly confident a quad-core will be plenty for my needs, for now (the only computationally-demanding software I'd be running is Logic Pro, and even then, I don't expect to get too crazy with softsynths & effects etc). I'm not into 3D rendering, or video editing, or even heavy-duty Photoshop.

I figure by the time I outgrow a quad-core AND by the time there's more software that can actually use eight cores, that'll be like 3+ years from now, and by then it'll be time to think of a newer MacPro regardless. (interfaces always change... there'll be USB 3.0, and who knows what else... updated SATA, PCIe, firewire standards, etc. etc. etc.). So why spend $400 on something that'll give me close to zero benefit for quite some time? Normally I agree that one should get the best computer you can afford, but... four cores already seems more than plenty.

Am I wrong? Is there lots of software that can already use 8 cores?

I would go one CPU and use the $400 for extra HDD's. As you say, by the time there is enough software out there to justify the 2nd CPU you can buy it then for a fraction of the current $400 or upgrade the whole shebang.