BTX was an Intel-driven formfactor oriented towards mass market manufacturers. Its primary promise was to reduce the number of system fans to One (Two counting the Power Supply). A single large fan at the back of the system would draw air through the CPU heatsink, and past memory and other components in front of that.

It was introduced in 2005/06 when AMD Athlon 64 and x2's reigned in the custom builder performance arena. AMD motherboards could not be easily adapted to the BTX design because it assumed an Intel system architecture and attendant m/b layout.

On top of that it offered nothing new for cooling add-in graphics adapters (such as all graphics NOT manufactured by Intel). 

Since it was primarily a single vendor solution for mass market manufacturers, it was only adopted for some mass produced systems while the ATX home builder and custom builder market continued unabated.

Why Have The System Builder Market Not Migrated to the BTX Form Factor from ATX yet?
I'm trying to create a SQL View that pulls 2 tables together each from a different DB.  The SQL works fine in the query editor but when I try to run it as a view all the columns from the MSP_EpmProject table say "Unsupported DataType".

SELECT     TOP (200) dbo.Project.ProjectID, dbo.Project.ProjectGUID, dbo.Project.ProjectName, dbo.Project.DefaultBaselineID, 
                      FMM_ProjectServer_Reporting.dbo.MSP_EpmProject.ProjectName AS Expr1
FROM         dbo.Project INNER JOIN
                      FMM_ProjectServer_Reporting.dbo.MSP_EpmProject ON dbo.Project.ProjectGUID = FMM_ProjectServer_Reporting.dbo.MSP_EpmProject.ProjectUID

