Got some nice improvements in all benchmark results when I run the memory at the same speed as the FSB. However for some reason this board doesn't let you choose 162 if you're running FSB and memory 1:1, the closest is 160 and then there is a gap until 166.

Anyway I have the ram at more relaxed timings of 3-3-3 instead of 2-2-2 and it's very stable at 1680mhz cpu speed.

1680/Quadro - 120.1mhz ram 222-7/9
Quake 3 800x600 - 176.9fps
UT2003 botmatch 1024x768 - 40.943924fps
3dmark2000 - 10724
3dmark2001 - 10086

1680/Quadro - 160.1mhz ram 333-7/9
Quake 3 800x600 - 185.3fps
UT2003 botmatch 1024x768 - 42.980572fps
3dmark2000 - 11451
3dmark2001 - 10623

EDIT - None of my Audigy or Audigy 2 soundcards seem to like 40mhz+ pci speeds. I'll play around with this some more on the weekend and get some pics of the mod and system then.
EDIT 2 - I don't think it's PCI speed that's an issue, the soundcards crash the system at 33mhz pci as well, in any event it's late and I'm going to sleep for now.

OMG

I just jumped out of bed to post this, I completely forgot about this stupid motherboard! It was an ebay purchase a few years ago and it has NEVER worked right with any of my PCI expansion cards! 🤣 I feel so dumb right now, my god.

So before I throw out this turdburger of a motherboard here are the promised pics.

I have also tested this same wire trick on MSI and Gigabyte socket 370 boards and it works on all of the ones I have. I cut a section of wire from an 80 wire ide cable to bridge the pins in the socket and laid a section of it in the pins of the processor so it would sit evenly in the socket.

Also just in case here's the site I first got this info on Tualatin voltage mods on from way back in the 2000's! https://www.geocities.ws/tuacubx/reads/MSMG.htm

plural of the anecdote is not data but still some useful info on RAM chips
Overclocking PC133 SDR RAM: What is the best SDR memory?