Techpowerup found benchmarks of the upcoming 65nm "Kuma" Athlon X2 7750 processor, you can check it out over here.
The chips were put through 3DMark06 (CPU Score), Cinebench 10 (64-bit), wPrime 1.55 (32M), and Fritz Chess. Additionally, the Cinebench 10 test was run with the chip overclocked to 3.30 GHz. The evaluation shows the Athlon X2 7750 "Kuma" to be seated somewhere between the Athlon X2 5200+ and Core 2 Duo E8200 on a broader scale. The addition of the L3 cache, among other K10-specific optimisations, seems to give the Kuma a definite edge over the Athlon X2 5200+ "Brisbane", which runs at the same clock speed, though it doesn't quite match up to the Core 2 Duo E8200, although it manages to beat it at wPrime.
Overclocking potential was also tested, the reviewers got the chip from 2.7GHz to 3.4GHz with AMD Overdrive but more details aren't available.