 It maintains a TDP of 35W from its predecessor Turion X2 Ultra (codenamed "Griffin").Turion II is identical to Turion II Ultra, except that the Turion II features only 1 MB of L2 cache (512 KB per core), and lower clock speeds ranging from 2.2 GHz to 2.6 GHz.The model naming scheme does not make it obvious how to compare one Turion with another, or even an Athlon 64.