Last iteration of my ultimate 98 machine was a Tbred at 175x14, DDR@350 on an AMD 761 board (very specific "recipe" for CMOS settings needed) with a GF-4200 Ti running 4600+ clocks, couple of those 80GB Western Digital BBs with the large cache in RAID 0, in 3DMark 2001SE was scoring around 20,000. Ran that until about 7 years ago, then caps seemed to be going weak on the motherboard. It's just been sitting waiting to get around to looking at it, recapping it or whatever....
Funny thing is, it wasn't supposed to be my ultimate 98 machine... before I built that, 2 years prior I spent near a thousand on "good" parts KT333 board, two clicks down from highest speed CPU (Typically best bang for buck and typically overclock okay) an 1800+, best HSF around, GF3 Ti with a "futureproof" 128MB of RAM, and oh lordy was that thing a pile of problems, mostly because Gigabyte can't implement AGP to save their life. Even all stock it was flakey. Anyhoo, couple of years later I've got a hundred bucks or so, and go to what might have been the last good computer fair ever in these parts, I think I'll pick up some parts to have some fun with, $10 case, $10 motherboard, both new believe it or not, used and grimy looking 4200 for $20, tbred 1600 CPU for $50, think I grabbed a spare 40GB drive at the same time, but it got my good ones when it turned out it was going to be a little ripper.
Edit: Oh yah, after I got that machine going I got a junk price used K7S5A and put all the parts from the previous machine in that for my wife, and THAT ran quicker, smoother and more trouble free than the Gigabytch 7VRX v1.1
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.