Dual-Channel Memory crucial for video editing?

[BreuerEditor]

I have a Late 2007 MacBook Pro with 4GB of RAM. Being a video editor and motion graphic designer, I've been seeing some instances where I need some additional RAM for rendering and whatnot.

I'm considering swapping a 2GB module to a 4GB to give me the 6GB of RAM unofficially supported for my model, but I'm concerned about the dual-channel architecture.

Is dual-channel architecture crucial for applications like Final Cut Pro 7, After Effects CS5, Maya 2010, and Photoshop CS5 or does the additional RAM make up for what performance gain I'd see in dual-channel.

Just as an FYI, the RAM my comp handles is PC-5300 667MHz

 

[spinnerlys]

No, Dual Channel will give you a slight, but negligible boost. But know, that FCP 7 is 32 bit and can only talk to 2.5 GB of RAM.
AE CS5 is 64 bit, thus it will take use of more RAM. I don't know about Maya though.

 

[Erendiox]

Seconded. The extra 2GB RAM will be much more beneficial than any speed boost from dual channel.