Kingston Predator 16GB (2x8GB) 1866 MHz DDR3 RAM/Memory Kit Review (KHX18C9T2K2/16X) - Benchmarks - SiSoft Sandra
SiSoftware's Sandra is another enthusiast utility suite which features a wide array of benchmarking capabilities, hardware monitoring, hardware information, diagnostics, and reporting capabilities for stability and configuration testing. Its benchmarking capabilities extend to nearly every component of your computer, including the entire system, the exception being dedicated graphics benchmarking. It also generates graphics which compare products for their aggregated performances including efficiency and price, which can be a powerful tool in itself and gives you an idea of where your system falls. We'll be using its memory benchmarking tools to verify our AIDA64 results, and provide a separate basis of comparison with a different piece of testing software.
Sandra's results point toward the same trends as AIDA's: nearly-linear speed increases with clock speed (with a hit taken for reduced timings). Memory bandwidth saw a healthy 20% increase, again at rated specs with only a single change needed in the BIOS, which is really what you're paying for in the 1866 MHz version of the kit. Maxxing out the sticks yields an additional 6.5% increase over XMP settings, which is certainly going to make a smaller difference, especially considering the voltage/heat increase needed to get there.
While the typical user probably won't see much of a performance gain between the rated XMP setting and the overclocked 2133 MHz clock speed, certain calculation-intensive programs might see minutes shaved off an operation time, which can add up to be a pretty significant difference, which is where specialty kits like the Predator will find their best homes.