OCC has published a new review of the AMD Phenom 9900
A quote from the article:
AMD Phenom 9900 Review
Well all the benchmarks have been run and the results should speak for themselves. I am impressed with some aspects and disappointed with others. I'm very disappointed that I could not overclock the Phenom 9900 and both motherboards that I have in my possession are not working as well as they should. I am going to have to revisit this CPU when all the bugs are worked out. What I am impressed with is how well the Phenom did compared to the Q6600 in the scientific benchmarks; remember the Phenom has half the shared cache, at 2MB, but is clocked 200 MHz higher than the Q6600.
AMD Phenom 9900 Review