Intel i386 SX25
25MHz may not sound much, especially as it's an SX processor but bear in mind that 5MHz or 9MHz extra will boost applications with quite a big leap. After all; 5MHz is 1/5 of the total clock frequency and along with an increased clock frequency the front-side-bus goes up with 5MHz as well. Unfortunately the 386SX performed quite poor in real 32 bit applications because of the 16 bit bus. 'Talking' to memory and other parts in the PC is just a lot slower compared to a DX system. Especially compared to 33MHz or even 40MHz 386DX systems that again have a lot more MHz at their disposal.
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