Patriot Memory Viper Xtreme Division 4 16GB (4x4GB) PC-1500 1866MHz RAM Kit Review - Benchmarks- PCMark7
PCMark7 is a "real-world" benchmark which runs an array of real-world tasks, such as multiple-tab web browsing, file copying, reading, and writing, gaming, and a large variety of other tasks which are meant to give your system a rating as it pertains to actual usage, and not engineered synthetic benchmarks. This benchmark will give us a good idea of the actual difference we're likely to see at these different settings.
The overall system score shows that the X.M.P. profile offers a 1.2% overall performance boost from the default, and the overclock to 2133MHz gave a meager 0.3% bump over the default kit speed of 1866MHz due to the slackened timings. It's fantastic that we can hit 2133MHz with these well-priced kits, but that's primarily for the hardcore system tweaker and overclocker. As we can clearly see, the extra strain on the DIMM yields next to zero noticeable gain in normal real-world applications. That's not to say there isn't a time and a place where the difference we see would be significant, such as tasks which involve alot of CPU-intensive number crunching, as many distributed computing projects rely upon.