Intel 440ZXM

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Intel 82443ZX-M

This is an Intel northbridge.


  1. The 82443MX is incapable of addressing more than 256MB on a single RAM module, which causes ThinkPads that use this chip to max out at 256MB.

Linux support

This chipset is supported by recent 2.4 and 2.6 kernels


Intel 440ZXM technical documentation
Intel 440ZXM datasheet

This chip may be found in