This question ought to be asked in the hardware forum, not here.
To give you an idea, look here:
In terms of where to spend your money on, the following applies:
3. Disk setup
Ultimate as you asked will amount to more than $ 15 K. Does that fit your budget?
Moved from Premiere forum to HW forum...
Do you want to see what was ultimate up to about the first of March, go to my Premiere Pro Benchmark PPBM4 page and see what was top of the line. If you want current top of the line you will have to leave AMD behind and switch to Intel. Current single processor is the i7-980x and dual processors it would be a pair of X5680's. They are so new that no one has yet benchmarked either with PPBM4, but they will eclipse the current scores.
Looks like Harm still maintains the top spot.
Maybe I'll cash in all my 401's and 403b's and mount a challenge to him, or maybe just buy wines...
i can tell you this about the 980x its unbeliveable.
preliminary tests show it out classing a Dual Xeon 5550
and at 4GHz its 2 times faster.
i am blown away buy it.