VI Cyrix CPUs
Remember the FastMath folks? They had an answer to the 80486 with the Cyrix 5x86. While the CPU sat in an 80486 motherboard, it performed rather well by using some of the architectural features normally found in Pentium class CPUs. The Cyrix 5x86 was available at 100 and 120MHz. While fitting a 486 motherboard, it offers performance comparable to roughly a Pentium 100. While the CPU is a 3.45-volt design, firms such as Evergreen Technologies, mounted this Cyrix offering to a voltage regulator, allowing it to be dropped into an older 486 motherboard. A quick check at Ebay found offerings for $10.00 apiece. This chip is a nice way to squeak out a little more life for a 486 PC running Windows 95 and a couple of applications, or converting to use with Microsoft Terminal Server.
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