Processing power at Virginia Tech?

I'm wonder what exactly is the current speed of the setup they've got going at Virginia tech. I found these specs at Apple's website:

The latest G5, sports a 64 bit processor, 2 floating point units, up to 8 GB of memory, and speeds of up to 1.25 Ghz on the front - side bus for each processor which offers a staggering 20GBps (Gigabytes per second) throughput on a dual 2.5 Ghz PowerPC processor setup. Bandwidth is further ptimized through utilizing a 400Mhz, 128 bit memory bus with a low latency hypertransport interface that connects the PCI-X controller, and the I/O subsystems to a system controller

**Note I modified what they said to shorten it all down but that is the gyst of it.

Now obviously Virginia Tech isn't running the dual 2.5Ghz XServe's... yet. They are running the Dual 2Ghz PowerMacs. Does anyone know what the frontside bus, and total throughput of these machines is?