Tom's Hardware Guide has posted an article about upgrading Slot-1 mainboards with Pentium III 1.4GHz
Are you considering finally replacing that old Pentium III computer with a new system? No need! A small adapter board makes it possible to use a Socket 370 processor on a Slot-1 board and offers astonishing performance. While the top-of-the-line 1.4 GHz P-III is still quite expensive, Celeron models can be found for under $100 and offer a much better price/ performance ratio. So hold on tight, the BX chipset is back!Read more