The ATI <A HREF="http://www.ati.com/products/radeon9600/radeon9600pro/compare.html" target="_new">official comparison chart</A> clearly show that the SE is 64-bit and the 9600 (NON-PRO) is 128-bit.
If this card si really a 128-bit version, APOLLO should have named it 9600 (NON-SE).