It'll be interesting to see if a machine will crunch transplanted WU's! In reality only the second machine will have to be taken offline for the test. The first machine can crunch the WU and return them. On the second one you'll have to disable network activity, crunch the WU's and collect the data, and then copy back the original BOINC folders for that machine. It can then continue on it's way.

Personally, I'd transplant the entire "BOINC" and "Program Data" folders over to the second machine. BOINC should recognize the hardware changes at startup and then run the benchmark. For the sake of accuracy, we can exclude and WU's that were "in progress" when the transplant took place. Also the last 7 WU's should be excluded since the CPU is not running 8 threads while crunching those.

Here's a cool idea: save a copy of the BOINC folders for future use! Whenever you want to test some mew hardware, you'll have a reference set up WU's to crunch to compare it to other hardware. You could even zip it up and email it to other members. I'll have a Gulftown up and running shortly and would be more than happy to run the test.