What a little cooling will do...
My worst problems for 3DMark2000:
CPU far too overclocked.
Vid card far too overclocked.
Memory timings.
Other.
Depending on how I set up my machine, I can actually get it to run 3DMark2000 with a V3 2000 at 190 MHz (sometimes).
Interestingly, until I added better cooling to the V3, and tweaked down the CPU speed a bit, I couldn't even get the V3 to run at 166 MHz.
Anyways, I can get well over 3200 3DMarks with this lowly V3.
By the way, I do not consider a CPU test alone a good test of CPU stability. Why? Because you HAVE to stress the video card as well. I can run those CPU burn-in programs all day (even several along with surfing at the same time), but if I throw a video intensive app in on top of it, it hangs within 30 minutes even if the video card is not overclocked. I wonder if that little extra case temp from the active vid card is enough to push those marginal CPUs over the edge. Decrease the CPU speed a touch, or up the voltage, then all is happy again.
By the way, I was using the old version of 3DMark2000 with my Celeron 533A, so it works at least with some of them.