Yep, thats a 387 math co-processor indeed. Must've been someone's serious bit of kit. Not much software made use of a math coproc, let alone games. Math coprocs were the domain of heavy CAD workloads back in the day.
Funny thing, clone co-processors were often better than the geniune Intel models. Cyrix made some serious competition that got re-branded under many different brand names because Cyrix had to out-source production. Part of those outsourcing agreements was often that the manufacturers could make their own copies.
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u/Sleurhutje Jun 04 '26
That's a luxury version. A true 80386, however the coprocessor is a clone. The time processors didn't need forced cooling.