The Forbidden and Forgotten UMC Green 486 CPU

UMC’s Green CPU was a unique and impressive feat of engineering. Although it was late to the party, it could run circles around other 486s when it came to clock-for-clock performance. Despite its very promising efficiency, it met an untimely demise due to legal troubles in 1994 and 1995. Join me today as I take an in-depth look at the UMC Green and compare it to a number of CPUs from Intel, AMD and Cyrix. I also push the green well beyond its rated frequency to get a glimpse of what “could have been”. Big thanks to Andrew (BrassicGamer) from the UK for sending me this CPU. Be sure to check out his blog and YouTube channel: https://x.com/brassicGamer http://www.brassicgamer.com/ https://www.youtube.com/@BrassicGamer Some interesting articles and posts about the UMC legal battle with Intel in the 90s: https://www.cpushack.com/2012/09/06/intel-vs-the-world-the-338-patent/ https://www.vogons.org/viewtopic.php?t=78628 An article in InfoWorld from October of 1993 about UMC's plans for the