Yes, the E450 can boot into 32-bit mode, and Solaris 8 supports a 32-bit
mode. See the following table:
<a href="http://docs.sun.com/source/817-4347-10/install-solaris.html#Z40006621e64" target="_blank"> http://docs.sun.com/source/817-4347-10/install-solaris.html# Z40006621e64</a>
As for why you might want to do this, is that you might have a 32bit application that your older server just can't run anymore. You might have an E450 laying around, so you want to move the application over with the least amount of fuss. Am I close?
Joel