Starting with running Nexuiz across the assortment of quad-core processors, the highest frame-rate was with the Core i7 870. Nexuiz is arguably the most demanding open-source game right now, but does not take advantage of multi-threading and some other advanced features, and likely faired the best with the Core i7 870 due to this Lynnfield processor having a slightly higher clock frequency than the rest. In second was the Core i7 920 followed by the Core i5 750 and then the Phenom II X3 710 in last.
The Core i7 870 also came out on top when it came with the ioquake3-powered World of Padman game. The positioning was similar to that of the Nexuiz run but with the Phenom II X3 710 pulling out ahead of the Core i5 750.
GraphicsMagick is a fork of the ImageMagick application but has since changed quite a bit from its original code-base and has picked up features like OpenMP to provide excellent multi-processing capabilities. With the first test of GraphicsMagick, looking at the performance from the HWB Color Space operation, the Core i7 920 rightfully came out on top. In second place, however, was not the Core i7 870 but rather than AMD Phenom II X3 processor. AMD CPUs have faired quite well with OpenMP and other multi-threaded tests in the past, and in this case, this tri-core processor running at 2.6GHz had beat out the Intel Lynnfield quad-core running at 2.93GHz.