Okay maybe the Beige G3 isn't so awesome, but on of my main machines to goof around with is a beige g3 desktop. Originally started as 233 MHZ 32mb model. When I got a 1ghz g3 for my B&W I took the B&W 450mhz and put it in the beige g3.
I also have a PCI usb card, PCI Firewire card, the AV Personality card and a PCI ATI Graphics card with 32mb of ram.
Well the reason for the topic of this post is that I put the 450 mhz in a while ago and never changed the jumper block so it ran at 233mhz still. I finally got around to changing the jumpers and have it set to 457 mhz and the system bus is at 83 mhz. It's still not as fast as newer systems, but that change alone was noticeably faster.
Sorry if this is old news to any one, but it still amazes me how useful some of these old systems are.