x264HD 5.0 Test
Tech ARP’s x264 HD Benchmark comprises the Avisynth video scripting engine, an x264 encoder, a sample 1080P video file, and a script file that actually runs the benchmark. The script invokes four two-pass encoding runs and reports the average frames per second encoded as a result. The script file is a simple batch file, so you could edit the encoding parameters if you were interested, although your results wouldn’t then be comparable to others.
This is another example of a useful benchmark that’s based on real-world code. I like encoding benchmarks since they’re one of the few tests that can measure a real-world use of the power of modern multi-core processors. Also, like SPECapc Lightwave, this benchmark is an “overclocking killer”, able to crash overclocked machines that can run synthetic stress tests all day long.
The frames-per-second encoded score increases by 11% for Run 1 and 12% in the more demanding Run 2.
In general, the performance increases I saw in these benchmarks were minor enough so that in most cases you wouldn’t notice them unless you were actually running and timing benchmarks.
I’ll present my final thoughts and conclusion in the next section.