Motherboards That Will Fit Into A Chenbro RM215 Chassis

what type of motherboard can fit into a RM215/217 server? We purchased some of these from a Dutch supplier 2 years ago, and they were delivered with Tyan AMD motherboards with S939 CPU's.

These are used for file storage, and are running 3ware 9550-sx controllers. Tasks are only rsyncing, gzipping, and rotating backups. Problem is that this is now happening fast enough with the single Opteron 2Ghz CPU they are carrying.

I want to do something like this;

* Dual Xeon Nocona, 2.8Ghz etc as we have _many_ of these CPU's already
* Dual Opteron 250-252 etc
* If as fast as the Dual Nocona, maybe a Core2 Duo, although not sure what is available w/PCI-X

So, if anyone knows, or can give any ideas, OR has any Nocona-capable motherboards for sale in Amsterdam for sale, please let me know,

BTW I have already tried doing the x2 chip upgrade on one of these, and was not impressed. The motherboard which is in these machines now IIRC is a S8965 Tyan - which has 32 bit PCI slots. I believe one of the problems here is the controller needs a 64 bit PCI slot to sit on, as it's saturating the 32 bit PCI bus.

Disk config is 8 x 750G / 9550-sx - again all I need is

* gzip / tar / move the files around & delete them
* figure 3-4TB of data on each of these boxes

OS - RHEL 5