Later version of the P4X266A, adds official support for the VT8235 Southbridge. Not known much else about this chipset.

Like it's predecesor, the P4X266E was still an "ilegal" Pentium 4 chipset.

Key features are:

• 400/533 MHz FSB speed, supports Pentium 4/Celeron processors with the Willamette and Northwood cores
• Up to 4 GB of DDR 200/266 or SDR PC100/133
• AGP 4x Support
• 266 MB/s VIA V-Link interconnect
• Paried with the VT8233A and VT8235 southbridges