If you want to get the "full potential" of the board, you need to get the more expensive Neo2-FIS2R. Here is how they compare:
• 865PE Neo2-S [Standard Version, Serial ATA(SB)]
• 865PE Neo2-LS [10/100 LAN, Serial ATA(SB)]
• 865PE Neo2-FIS2R [GbE LAN, IEEE 1394, Serial ATA(SB), Ultra/Serial ATA RAID(Promise)]
Also, according to MSI, only the FIS2R has the Dynamic Overclocking Technology (DOC as referred to in the THG review). As quoted from the following BIOS update page for the Neo2:
-Add Dynamic Overclocking item in the BIOS setup (support only 865PE Neo2-FIS2R)
<A HREF="http://www.msi.com.tw/program/support/bios/bos/spt_bos_detail.php?UID=433 &NAME=MS-6728" target="_new">http://www.msi.com.tw/program/support/bios/bos/spt_bos_detail.php?UID=433 &NAME=MS-6728</A>
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Armadillo<font color=orange>[</font color=orange><font color=green>TcC</font color=green><font color=orange>]</font color=orange> at Lanwar and MML