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What is the x87 floating point unit?
How does x87 work?
... 387DX was available and it has the performance of 3.4 megawhetstones per second. The following boxed version of 16-, 20-, 25-, and 33-MHz 387DX math ...
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Intel Math Co processor Vintage 387DX Processor i387 NEW RETAIL BOX RARE ; Item Number. 185851319757 ; Brand. Intel ; Country/Region of Manufacture. Malaysia ; MPN.
ID: 65. 387DX. Logs. node Process node. Empty. ram L1 cache. Unknown code, Unknown data. threads IMC. None. cpu Features. Empty. act Actions.