(1) 3.33 GHz 6-core vs (2) 2.4 GHz 4-core

Hi there.

I'm relatively new to the Mac Pro world and was playing around with the different ordering configurations available.

Can someone please explain the difference (along with any associated pros and cons) of getting one 3.33 GHz 6-core (6 cores) vs two 2.4 GHz 4-cores (8 cores)? The 6-core option is actually $383 more expensive. I guess what I'm trying to figure out is what are the pros/cons of having one chip that is faster (with less cores) vs two chips that are slower (but more cores)?

I wouldn't be using this desktop for anything processor intensive at the moment... let's just assume some audio processing/editing with some minor graphics use (Adobe Photoshop).

Does one configuration lend itself better to a casual user vs a user that processes a lot of data (ex. video, audio, etc)? I'm wondering if having one chip that is faster is better suited for my needs?

Thank you,
Keith

thank you caocao for the quick response.

could you possibly explain "perfect multithreading" as i'm not familiar with what you mean?

am i to assume that most programs out there would not take advantage of these mutlicores? i'm not entirely sure what 6 cores vs 8 cores really means to be honest. is it basically telling the operating system (and any applications that support it) that there are 6 brains vs 8?

thanks,
keith

that makes sense, thank you.

one other question.

how do i know what programs will utilize 6 cores or more/less? i assume OS X could utilize at least up to 12 (since apple sells a 12 core)?

thank you, so i guess that's why it's the more expensive option.