We have always had to go with Intel or have the right MoBo because the cards were a little finnicky. Now because of the DSP being self contained in a 1U, we only need a MoBo w/ the right PCI-e slot and then we can pick the other features.
I really like the way the new 785G Chipsets use the 128MB SidePort RAM to run our grapghics w/o interupting the system RAM or resources.
I know 128MB will be enough because I still have a Supermicro P4SCT+II w/ Matrox G450 w/ a whopping 16MB's of RAM........

It runs Scope and Gigastudio 160 2.54 just fine, so 128MB can do 2D all day long me thinks.
This means Screw waiting around for a powerful laptop, the XITE-1 is alreadu a 1U, so what's the difference in adding another 1U and carrying around a little 4U which will have 1 x SE-1, an A16U, the XITE-1, etc.
In other words the 1U DAW is 20" deep. that means because all of the other rack gear is shallow I still have 6U worth of space left........NICE..
Solaris will here this Fall and the idea of playing a New Years gig and rolling my whole rig in on a Dolley is cool, 2 x ATA keyboards and a 4U.......Sahweet.