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Bigeye #19: The Fastest AT Computer

Created on June 13, 2020
Indexed on September 08, 2022 at 02:39 PM

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Okay, so this might not truly be the fastest AT computer ever, but it's definitely up there. I could install a 1.4GHz Pentium III here, but that would require overclocking the 440BX's FSB to 133MHz, which I have not had good luck doing.

No 440BX motherboards natively support Tualatin CPUs, so you need a special kind of Socket 370 adapter which supports Tualatin CPUs; for boards that support Coppermine CPUs, a Slot-T adapter will suffice. For everything else, a PowerLeap iP3/T must be used.

Don't be turned away by the name; Tualatin-based Celeron CPUs have 256KB of L2 cache, twice what's normally seen. It's amusing to think the 440BX chipset from 1998 ended up indirectly receiving upgrades well into 2002... you don't see that happen often.

Tualatin CPUs may not work on all 440BX motherboards. You'll very likely need to update the BIOS on yours to the latest version, even if it is a beta. If you're using a board designed by Intel, though, DO NOT UPDATE YOUR BIOS, as later versions arbitrarily remove support for later CPUs.

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