I randomly come across this on youtubeSo I finally got a hold of one of the most powerful Xbox systems ever created. That would be one with both the classic 128MB RAM mod and a CPU upgrade. All work was done by a legend known as Trusty. Look around the net for him. His work is awesome.
The standard Xbox console comes with 64MB of RAM and a hybrid CPU that is based on the Pentium 3 and clocked at 733Mhz. this console has 128MB of RAM and the CPU is the most powerful Pentium 3 ever made, the Tualatin. It is clocked at 1.4Ghz thus making the CPU power nearly twice as much as stock.