Intel 440BX

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Revision as of 17:01, 13 November 2018 by Bugmenot2 (Talk | contribs) (Added the datasheet for this northbridge.)
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Intel 82443BX

This is an Intel northbridge.
CPU Host Bridge (PCI ID: 8086:7190)
AGP-PCI Bridge (PCI ID: 8086:7191)


  1. The 82443BX is incapable of addressing more than 256MB on a single RAM module, which causes most ThinkPads to max out at 256/512MB. Certain ThinkPads may have 32/64MB soldered on the motherboard, and may allow them to max out at 544/576MB instead.

Linux support

This chipset is supported by recent 2.4 and 2.6 kernels



This chip may be found in