Ghost 14 ; How many CPU cores can it take advantage of to compress backup images?

Hello,

 

I've noticed on my dual core machine that when I run Norton Ghost to back up my primary hard drive, using high compression, it will take advantage of both my CPUs. I like that, and I hope it can span out to 4 CPUs (4 cores) if I had a 4 CPU system.

 

How many cores can the compression engine of Norton Ghost span out to to improve compression computation speed?