For a very long time, the computer club I was in operated a DNS server on a Pentium 75MHz and after the last major hardware upgrade it had a total of 110MB RAM memory and 2G disk space. It worked great except that before the upgrade it tended to run out of ram whenever there was a Linux kernel update, a problem we solved forever by populating all the ram slots with the maximum that the motherboard could handle to that nice 110 MB.
If I remember right there were certain very early pentium 3 processor competitors from VIA and other non-intel, non-AMD sources (with much worse performance) that had integrated onboard SVGA video, where the video RAM was shared with the system DRAM. Meaning that depending how you configured the video in the BIOS, you could have something like a 128GB RAM server "minus" 16GB RAM withheld for video, with like 112GB usable by the OS.
But if this guy is talking about a pentium 75 MHz (socket 5 CPU) that's a totally different generation of stuff several generations before that.
