New Processors On Old Boards: Adapters From Upgradeware for Socket 370 and Socket 423

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Socket 423 To Socket 478

Upgradeware proves this isn't the case with the p478, which allows you to run the quickest Pentium 4 processors (up to 2.6 GHz with 400 MHz FSB) in an old system with Socket 423.

The p478 adapter is delivered with a small installation guide and the necessary mountings.

In contast to the Socket 370 adapter, this model does not come with a processor cooler.

In the middle of the adapter socket is a block of DIP switches that allow you to change the CPU voltage.

This table contains the necessary settings for different processor core voltage levels.

Patrick Schmid
Patrick Schmid
Editor-in-Chief (2005-2006)

Patrick Schmid was the editor-in-chief for Tom's Hardware from 2005 to 2006. He wrote numerous articles on a wide range of hardware topics, including storage, CPUs, and system builds.