'Classic' Pentium 75Mhz

The Pentium CPU was a milestone for the x86 architecture somehow - it was the first superscalar x86 chip and the first to be a serious alternative to RISC CPUs. When those Pentiums finally were released, they were still far away from being available to the ordinary customer. On the one hand, they were horribly expensive, on the other hand Intel didn't want to switch their production to Pentium chips as long as their 486 chips were selling in large numbers. In those early days, Intel could get a much higher number of 486 cores from one wafer that pentium cores because of its core size, in addition with large die sizes the probability of a core being defective rises. While there was no real competitor on the market (AMD still wasn't allowed to sell their 486 chips) there was no good reason to waste production facilities to the expensive production of Pentiums while any wafer was needed to meet the demand for 486 chips. Intel chose its name 'Pentium' instead of the more sensible '586' because Intel feared that their competitors would release their chips under the name '586' too, like they did with their 386 and 486 chips. In contrast, the Name 'Pentium' could be protected by copyright. This one hasn't got the infamous FDIV-flaw. However, I must admit that I was hardly able to get this one running reliably under high load, this chip gets really hot!