Simulated Dual-Core Versus Actual Dual-Core Comparison
In order to test the validity of the methods we've been using to simulate different numbers of CPU cores, we will compare our handicapped 955 Black Edition results with an actual dual-core CPU. We overclocked a Phenom II X2 550 BE to the exact same multiplier, clock speed, HyperTransport speed, and memory speed as the Phenom II X4 955 BE we used in this article. We then re-ran all of the tests to compare the results with the numbers generated by the Phenom II X4 for two-core operations. Let's look at the SiSoft Sandra results:
As you can see, the results are identical. In fact, we performed all of our benchmarks with the Phenom II X2 550 BE, and every one resulted in identical performance to the Phenom II X4 955 with two of its CPU cores disabled.
We don't want to waste anyone's time filling pages with charts showing identical results, so we will simply say that the method of disabling CPU cores using the operating system has proven itself to be a reliable and valid methodology.