It is the follow-up version of the first generation Pentium, which strengthens the application of multimedia processing. At this time, the landlord should know that 80586 is actually Pentium I, and Intel did this because some small semiconductor factories abused Intel's number. For example, some of the 386 and 486 era machines I use don't use Intel's CPU, but Texas Instruments. The CPU manufactured by Cyrix and other manufacturers, I remember that the number of 486CPU of Texas Instruments is DB80486JX, and its performance is equivalent to that of Intel. Because the public thinks that Intel's next generation should be 80586, and Intel's 586 has not yet been made, Cyrix and others produced the CPU with the number of 80586, and Intel seized their handle and took this opportunity to name 80586 Pentium.
Looking back now is also very interesting, and I have a soft spot for old machines! Pentium MMX appeared after Pentium I and Pentium Pro, so your machine at that time was quite good, and overclocking should be impossible. As for memory, I think it should be edo RAM. At present, the delay is high and the speed is very slow. Just installed a 2000 comparison card, it will take half a day to start, and it will be faster after entering. I suggest you use Windows95, which is relatively stable. Meeting your CPU, nostalgia.