Get the T6600. The SU is clocked at 1.3Ghz, whilst the T6600 is clocked at 2.2Ghz. Almost a Ghz faster. The only difference is the SU has 3MB cache opposed to the 2MB cache the T6600 has.
But don't let that fool you. T6600 is the way to go.
Message edited by godbrother on 11-13-2009 at 03:05:08 AM