PCMark05 is an application-based benchmark and a premium tool for measuring overall PC performance. It uses portions of real applications instead of including very large applications or using specifically created code. This allows PCMark05 to be a smaller installation as well as to report very accurate results. As far as possible, PCMark05 uses public domain applications whose source code can be freely examined by any user.
PCMark05 includes 4 categorized suites for benchmarking your computer. These include CPU, Graphics, Memory and a Hard Disk Drive benchmark. In our case, we selected to run only the Memory test suite.
OCZ got the best score when running at 500MHz and the lowest score when running at 400MHz. Remember, that you cannot run these at 500MHz without making some BIOS changes. But then again, OCZ memories are aimed at enthusiasts who don't have any problem messing around with the BIOS. "No pain, no gain".