When the quad-core A8-3870K was running at 3.5GHz, it was possible to build the Linux 3.1 kernel in just over two minutes time. This was floating around at right around the same build time as when using the Intel Core i5 2400S "Sandy Bridge" CPU. Pulling in front of the overclocked A8-3870K Llano was still the very popular Intel Core i5 2500K. Of course, using the FX-8150 Bulldozer or Core i7-3960X is obviously significantly faster.
The positioning when compiling PHP using GCC 4.6 across the range of processors was quite similar to the Linux kernel compile-time results.
When the A8-3870K was running at 3.5GHz, its performance was now in front of the Core i5 2400S by about 5%. At stock speeds, the i5 2400S was faster than the new Llano by about 7%.