On my game crashes from out of memory errors, I have noticed they all run to about 1.4gb of memory also before it occurs.
http://dl.dropbox.com/u/8496825/Elemental/DxDiag.txt
http://dl.dropbox.com/u/8496825/Elemental/Elemental0_804-2010-06-26T00-20-10-684.rar
http://dl.dropbox.com/u/8496825/Elemental/1/Elemental0_804-2010-06-26T21-12-08-165.rar
http://dl.dropbox.com/u/8496825/Elemental/2/Elemental0_804-2010-06-27T09-33-39-861.rar
(Edited to include the dump file. Had to create the zip/rar myself. On these crashes it made the .dmp file but it did not create a zip file successfully)