PerfCompare is designed to help you test, compare performance, and micro-benchmark small snippets of C# code.
The most effective performance improvements come under the guidance of a Profiler. Once you've identified a bottleneck, PerfCompare's Performance testing helps you quickly test and compare ideas.
When you want to dig a little deeper, PerfCompare's ILDasm integration helps you see exactly how the compiler translates your C# code into MSIL.