CPU Scaling - Core i7 9xx
As usual, we set our Core i7 processor at a range of different clock frequencies to see how that affected performance (all previous GPU tests had the Core i7 clocked at 3.60GHz). Using the Radeon HD 5970 for this test, we found that there was still quite a bit of headroom in the i7 at 1920x1200, which suggests that Call of Duty: Black Ops is both very GPU and CPU demanding.
Recently we tested out the single player mode in Medal of Honor and found it was primarily GPU dependent, showing just a 9% increase in frame rate when going from 2.0GHz to 4.0GHz despite the 100% rise in frequency.
Call of Duty: Black Ops on the other hand saw a massive 78% increase in performance when clocking our Core i7 processor from 2.0GHz up to 4.0GHz, and we continued to see a performance increase right up to the maximum tested frequency. Both the minimum and average frame rates were affected, suggesting that users who are in need of better performance will want to overclock their processor for this game.