I know for a fact this chip works (ended listing) because that's what I used to upgrade the PC compatibility card I had in a long since gone 8600 tower.
Surprisingly, there aren't nearly as many listings for it out there as there were when I was hunting for them. Just make certain that once you get the chips you insert them correctly oriented...unless you want to see some magic smoke coming out of your PC compatibility card
Is that RAM usage correct? I didn't think 7.6.1 was that RAM hungry, or at least it hasn't been on the machines on which I've run it. It almost looks like what happens when you boot into 24 bit mode with more than 8MB of RAM on an SE/30 but Power Macs can't boot into 24 bit mode.
A good number of Macs can use the Command-Control-Power keyboard combination to reset, but as I recall the SE/30 cannot. Indeed, the power key (has an arrow pointed left) itself cannot be used to power on the machine which is why I purchased a Sophisticated Circuits PowerKey Classic about 10 years ago to enable that feature. But do any of you remember the technical reason why Command-Control-Power doesn't work on the SE/30?