Intel 430TX

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Intel 82439TX

This is an Intel northbridge.


  1. Some ThinkPads do not use PC-66/100/133 RAM modules, even if they came with this northbridge.
  2. The northbridge is only capable of caching 64MB of RAM, so anything accessing after the first 64MB will be slow.

Linux support

This chipset is supported by recent 2.4 and 2.6 kernels


Intel 430TX PCIset technical documentation
Intel 430TX datasheet

This chip may be found in