They were scorching HOT, had its own variant of Pentium F00F bug https://en.wikipedia.org/wiki/Cyrix_coma_bug https://en.wikipedia.org/wiki/Cyrix_coma_bug and n

They were scorching HOT, had its own variant of Pentium F00F bug https://en.wikipedia.org/wiki/Cyrix_coma_bug https://en.wikipedia.org/wiki/Cyrix_coma_bug and not pipelined FPU made them suck at 3d games. Cyrix screwed by promoting PR performance metrics and initially trying to charge Intel prices, AMD was also guilty of this hilarious trying Pentium 2 pricing on highly clocked K6-2 while $100 Celerons beat those CPUs handily.