According to Gartner,
HP/Compaq now outsell Dell in the Server market globally.
http://arstechnica.com/news.ars/post...e-beating.html
RM & Viglen all use the Intel Server Chassis because Intel are not permitted to manufacture the complete item themselves due to Monopoly legislation that applies in most countries, so they distribute the components and chassis through the IPP channel.
This means that there is a reasonable amount of profit to be made out of assembly and distribution and RM, Viglen and several others can all put their own badge on them.
They are very generic and the biggest problem with them is that many of the components are simply thrown together without any real thought as to how a specific controller works with a specific mobo or drive with array.
Specific server builders such as Dell and HP spend a lot of time and money making things work together correctly.
I have a couple of 2 x HP Quad Cores running with only 4GB of Ram and they fly, but that was only because they were on a buy 1 get a second CPU free deal in July.
You should see how quick it logs on!
They make a superb platform for Virtualisation though and thats what it will eventually be used for!