Of the three models you mentioned, 9650 is of course the best. It is obviously several grades better than the previous two products. Athlon Athlon64 9650 is the pterosaur generation. The latest one is Pterosaur 2. The performance is even higher! The trademark for pterosaurs is Phenom.

Athlon64 X2 is the trademark. AMD has been using it for many years, probably since 2000 or something, and has been using it until now (originally Athlon). For almost 8 years, it is just the same brand as INTEL's Pentium. The earliest velociraptor. Athlon XP. Athlon 64 Athlon 64X2 has gone through several eras and its name has not changed. But the product has indeed undergone very big changes! At present, the mainstream low-end is Athlon dual-core, and the mid-to-high-end is Pterosaur 2. Pterosaur 2 currently has four cores. There are also 3-core ones, but very few. Of course AMD has now begun to promote pterosaurs. New brand. Just like the Core promoted by Intel.

As for Dulong, it was a product N years ago. Low-end low-end