We have Avid DS NItris 7.5 over HP XW8200. We want change the Workstation. is it posible? Is other harware compatibility like DELL 7400 workstation? Or only works on HP workatations. thanks.The Nitris boards are PCI133.

 I don't know all of the compatibility issue but I'm pretty sure that the HP is the Only supported platform. I'm all for going off the ranch when it comes to supported systems but support for our DS is too important for me to take the risk.

 Thanks. If anyone knows about this issue let me know.

HP is the only "supported" platform.  Due to the tight integration, I wouldn't recommend any variation from that.  The xw8400 is the last CPU that will support the Nitris boardset.  If price is the reason you're looking elsewhere than HP, check out http://www.lamicrogroup.com for refurbished HP's with warranty.