I assume the windows client is optimized for Intel CPUs by default, and therefor Intel-based rigs don't need many switches.
Running Folding@Home has shown that AMD CPUs are awsome performers, but they need to be cared for, like any race-horse 
Folders on AMD CPUs have to find out which switches work best for them.
When you do want optimum performance you need a very stable machine with good cooling.
When you don't want optimum performance, you could fold without using a switch at all.
But, if you can't accept Lamsey outranking you ( like I can't ), you'll need the switches or a whole lot more machines. :01:
Fold on ! 
