PC Stats has posted a review on the VIA P4XB-RA P4X266A Motherboard
With no official support from Tier 1 motherboard manufacturers for the VIA Apollo P4X266A chipset VIA had to do something rather drastic for a chipset manufacturer - they had to start selling their own motherboards. For a company with a focus on silicon chips this is no small task, so while VIA began selling their own motherboards they relied on partnerships with other companies to make them.Read more
The VIA P4XB-RA is based on the VIA P4X266A chipset which supports Socket m478 400 MHz Pentium 4 CPU's (Williamette or Northwood) from 1.5 GHz to 2.2 GHz+. The board has 3 DIMM slots supporting up to 3 GB of non-ECC PC1600/2100 DDR266 RAM (5 banks). While we don't have any 1 GB DIMM's to test with, we did test the board with three 256 MB PC2400 DIMMs and saw no stability problems.