OCworkbench reviewed the P4G8X Dual DDR Mainboard from Asus :
It is interesting to find check out this new product from ASUS. What interests me most is the Gigabit Ethernet on board. On first sight, I feel that it is more of a server board. I spoke to my contact person at ASUS and he told me that this board will be targeting the end user. While I was surprised with the availability of Firewire, S-ATA and Gigabit Ethernet for a end user board, it might prove useful for those who are using it for multimedia and video editing.
In the performance category, the ASUS P4T533 is that uses RIMM4200 is the best P4 platform but it the difference between the RIMM4200 and Dual DDR is negligible. The scores in the SiSoft Sandra looks beautiful but whether applications are able to tap this extra bandwidth is another story.
This board has some of the best features e.g. AGP 8x, Gigabit Ethernet (optional), 1394 (optional), 4 USB (+2 using bracket). 6 channel audio, 1Mhz stepping etc. Although there is no diagnostic LED on board, it comes with POST Reporter. There is also the EZ-plug to use it with old PSU. Installation is straightforward provided you use similar branded modules (since it needs to be in pairs). If you were to use different brands of DDR266, it might work but I do suggest you use 2 x same module for best results.