We had a chance to witness that K10, Barcelona, an Opteron 2200 series actually runs at 32 Celsius after a full load on a CPU.
This is not bad and we are talking about server cooling that is never that fancy as on the CPU and the Barcelona still remains a cool chap. This is really a nice score for a quad core CPU under a load and the server people will like it.
The only question that remains is how far they will be able to push it with this TDP.