The Tech Zone has posted a review on the Iwill KK266-R motherboard
The KK-266R is a socket A motherboard based on VIA KT133A chipset. It features 6 PCI, 1 ISA, AGP 4x, 3 Dimm slots, C-Media, and on board AMI ATA/100 IDE RAID controller with dual ATA/100 channels and 0,1, 0+1 functions. It supports RTC, WOL, and WOM.Read more
The first thing you notice about the KK266-R is the nice box it comes packaged in. The box layout and design is the best I have seen in any motherboard. While this has no effect on performance it does make the motherboard stand out among the others on the shelf. Iwill makes two version of the KK266, an R and non R version. The R in this case stands for RAID. The RAID controller allows you to hook up to four drives in striped, mirrored, or a combination of both. For maximum hard drive performance you would stripe your drives in a RAID 0 setup. The performance gain is really amazing. Striping two Quantum 7200 RPM ATA100 drives gives higher performance than a 15,000 RPM SCSI drive!