It's worth stating up-front that we are not going to attempt to find ideal settings for every possible CPU/GPU configuration available. Today's article uses the same benchmarks that we used in our first article, but focuses on finding the right mix of CPU and GPU performance for the best Oblivion experience. In our initial article on Oblivion performance we compared high end and mid range PCI Express GPUs, discovering that we had finally found a game that was stressful enough to truly demand more GPU power than what is currently available on the market. Bethesda Softworks' latest hit title, The Elder Scrolls IV: Oblivion, is such a game. However, every now and then there comes a game that is an equal opportunity stress test on your system, requiring an extremely fast CPU as well as a high end GPU. You would typically be running at fairly GPU-bound graphics settings - even if you were CPU-bound, frame rates would be high enough that it wouldn't really matter. In the past, as long as you had pretty much any Socket-939 Athlon 64 you had enough CPU power to drive even the fastest single GPU video cards.
Whenever a PC game pushes the limits of what current hardware can do, it generally ends up being fairly GPU bound.