I checked on Newegg, becuase I have a mobile 3000+ with the 1 MB L2 cache, with the clawhammer core, however the desktop version has the newcastle. Anyways newegg, sells both the mobile and the desktop version of the 3200+, the desktop version have the new castle core, with 512 KB of L2, while the mobile version has the clawhammer core, with the 1 MB L2 cache.
However starting at the 3400+ they all have the clawhammer core.
Mobile Version:
<A HREF="http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-443&depa=1" target="_new">http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-443&depa=1</A>
Desktop Version:
<A HREF="http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-483&depa=1" target="_new">http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-483&depa=1</A>
While using Newegg for a guide isn't particually recommend, they are pretty good at listing most things.
My Desktop: <A HREF="http://Mr5oh.tripod.com/pc.html" target="_new">http://Mr5oh.tripod.com/pc.html</A>