Even with the power of the AMD Athlon X2 and Intel Extreme Edition processors, we still find ourselves hitting a CPU limitation in a lot of our benchmarks. That is, the graphics cards have more performance to give but the processor is letting the team down.
By overclocking the processor we can see what kind of a performance increase we get. When something isn't CPU limited the performance increase isn't all that major but when we do have a CPU bottleneck, every MHz extra we can get can show us an excellent jump in performance.
The Athlon X2 3800+ was increased from 2GHz to 2.3GHz with a slight increase in the front side bus utilizing the stock X2 HSF.
The overclock gives us a small bump in performance at both resolutions but nothing that you would get too excited about.
Even though the CPU is overclocked over 10% the performance increase seen in 3DMark05 can barely be seen.
Far Cry at the lower resolution sees a nice bump in performance but at the higher resolution we don't see anything at all.