Help with 32 vs 64 bit, unbuntu studio

Searched the forums and haven't really come up with a clear answer. I'm going to by a desktop and trying to decide between Dell and System 76. Seems like Dell is a 32 bit install and System 76 is 64 bit. I have a Delta 1010 audio interface. It's not clear to me that if I get the System 76 the Delta will run well in the 64-bit environment. Anyone have any experience with either of these two manufactures and the Delta 1010 and 32 vs 64 bit drivers and such. Much thanks for the help in advance.

I don't use a Delta 1010, but because its drivers are ALSA, they should work just fine on either a 32 or 64 bit OS.