Quite a few of the following options would give a 386SX from 1992 a run for its money in terms of raw computing power: https://www.digikey.com/en/products/filt

Quite a few of the following options would give a 386SX from 1992 a run for its money in terms of raw computing power: https://www.digikey.com/en/products/filter/embedded-microcontrollers/685?s=N4IgjCBcoKwAwDYqgMZQGYEMA2BnApgDQgD2UA2iAMxgAsAHPVSMTQ-TCyLQOxUCcPTsQQcATAjFdaDMTAis69fnBABdYgAcALlBABlbQCcAlgDsA5iAC%2BxMP2XIQaSFjxFSFEKo0gdew1NLG2IAWiloZyhjAFcPMkhKYRB%2BdWtbEAjKAFsTFCMSFBIzYxJsbHwjdREnEwATPVCwOAU-XUgQLm0AT018PUxcNHSgA https://www.digikey.com/en/products/filter/embedded-microcon... To compete with a high end 486 desktop from 1992 you might have to pay a bit more than $1, particularly if you want floating point.