Tweaktown published a review of the AMD Phenom X4 B3 Stepping CPU.

Quote from the review:"It has since taken some time for AMD to come up with a new addition to its CPU portfolio. Already attempted once, AMD had to re-design some of the CPUs due to a hardware problem that results in errors if the additional cache memory is used; today AMD has corrected this and released what is now known as the “B3” stepping revision of its Phenom Processors, the first series of CPUs to support the K10 architecture.
First off, before we get into our Phenom processor, we wanted to have a bit of a look at the K10 architecture that AMD is hoping will save it from Intel’s Core architecture that has managed to severely hamper AMD’s sales as the top performance CPU."
Read the full review on Tweaktown.