Core i7 Memory Scaling: From DDR3-800 to DDR3-1600

Benchmark Results: Synthetic, Encryption Benchmarks

Synthetic & Encryption Benchmarks

The two CPU tests of Sandra 2009 show some benefits with faster clock speeds and timings, but the difference is really tiny.

Encryption using 256-bit AES doesn’t benefit much from faster memory either.

The same applies to SHA 256-bit encryption: there is not a big performance increase.

The memory bandwidth benchmark shows the true benefit in RAM speed, although it doesn’t have an effect on real software anywhere near the difference in throughput.

PCMark does not perform a memory throughput test like Sandra, but it still shows more performance differences than all of the following, real-life tests.