Hello Optimistic,
According to the following link what motherboard in studio XPS 9100 (i7 930)? - Desktop General Hardware Forum - Desktop - Dell Community it looks like this computeruses an Intel X58 Chipset.
The Intel motherboards based on X58 chipset are the following http://ark.intel.com/compare/50243,36888,50242
However, only your system's manufacture will be able to let you know if one of these boards will be support or not.
Regards.