Yah thats old school EDO SIMMs, which last time I saw made a nice upgrade for my Laser printer (5 years ago)
ISA and PCI cards so its not that old
Interesting looking heatink on the motherboard... do not think I have ever seen that before (assuming that is what it is)
Those quantum bigfoot 5.25" hdds are beasts, very heavy but last forever I have seen more than a few in my time.
Interested to see if you can find a model number on that motherboard. looks like it might have a CPU slot for it as well.