Does adding core to the computer affect boinxtv? and SSD drive?

I tried the new macbook pro 17inch with boinx tv and it’s clearly not enough powerful. I was thinking buying the new mac pro 2.4 GHz 8 cores or 2.66GHz 12 cores [Add $1,600.00]. Do you think paying the extra 1600$ is worth it, I use mainly Final Cut Pro 7. I use DV cameras to stream on the internet but I plan in 1 year or 2 use HD cameras?
Does SSD hard disc can help to run boinx tv?

In your case, I’d get the 8 core and for the money you save, get the ATI Radeon 5870 graphics card and 8 GB of RAM. That system is capable of handling 3 non-keyed HDV Cameras. We use that system here.
An SSD shouldn’t make a huge difference as the HDD never turned out to be the bottleneck in our tests yet.