Reply 32440 of 53051, by jheronimus
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derSammler wrote on 2020-02-11, 09:09:Problem is that starting with 800 MHz, Intel went from 100 MHz FSB to 133 MHz (800 MHz P3 was available in both versions). BX isn't meant for FSB >100 MHz, even if some mainboards allow overclocking. So if you want 1 GHz, you need to install a 1.33 GHz one, as you need a CPU with a 10x multiplier.
SL4KL and SL4BR are 1GHz Slot 1 CPUs for 100Mhz FSB. I'm going to test mine SL4KL tonight just in case, but I think it should work fine. The manual probably doesn't mention these chips because they were released a couple of years later than the board.