Cyrix 6x86L-PR200+GP 150MHz Socket 7 desktop CPU, 75 MHz FSB x 2, 2.8V. I just pulled this out of a minitower with an Amptron PM8600 motherboard, which I saw boot consistently. It is a 150 MHz processor with a 75 MHz front side bus.
This product would be a great fit for those looking to upgrade an older system with a more powerful socket 7 CPU in a ceramic gold top socket 7 CPU package.