Simply put, the x264 HD Benchmark is a reproducible measure of how fast your machine can encode a short HD-quality video clip into a high quality x264 video file. It’s nice because everyone running it will use the same video clip and software. The video encoder (x264.exe) reports a fairly accurate internal benchmark (in frames per second) for each pass of the video encode and it also uses multi-core processors very efficiently. All these factors make this an ideal benchmark to compare different processors and systems to each other. We are using x264 HD v5.0.1 for this test. This application scales across many threads and is ideal for processors with Intel Hyper-Threading or a bunch of cores.
Benchmark Results: The x264 HD v5.0.1 benchmark showed that at 2133MHz with CL14 timings we were averaging 98.96 FPS on pass 1 and 27.49 FPS on pass 2. When we set the UEFI/BIOS to XMP Profile #1 we were seeing 108.05 FPS on pass 1 and 29.29 FPS on pass 2 at 3200MHz with CL16 timings. It looks like once you get a DDR4 memory kit beyond 2400MHz in clock speed that the video encoding performance on the Intel X99 platform with the Intel Core i7-5960X processor isn’t memory limited and there is little to be gained from running a 3200MHz memory kit versus a 2400MHz memory kit for example.