Intel Core i9-7900X And Core i7-7740X CPU Review: Skylake-X and Kaby Lake-X Debut

Core i9-7900X And Core i7-7740X - Cinebench R15, POV-Ray, Fluid Dynamics

Cinebench R15 is a combination CPU and OpenGL 3D rendering performance test based on Cinema 4D from Maxon. Cinema 4D is a 3D rendering and animation tool suite used by animation houses and producers like Sony Animation and many others. It's very demanding of system processor resources and can utilize any number of threads, which make is an excellent gauge of computational throughput. This is a multi-threaded, multi-processor aware benchmark that renders and animates 3D scenes and tracks the length of the entire process. The rate at which each test system was able to render the entire scene is represented in the graph below.

3D Rendering Benchmark


The Core i9-7900X rocked the Cinebench benchmark. The processor's combination of high clocks and many cores result in the highest multi-threaded Cinebench score of the bunch. The Core i7-7740X performed right on par with the 7700K.

POV-Ray Performance
Ray Tracing Benchmark

POV-Ray , or the Persistence of Vision Ray-Tracer, is an open source tool for creating realistically lit images. We tested with POV-Ray's standard 'one-CPU' and 'all-CPU' benchmarking tools on all of our test machines and recorded the scores reported for each. Results are measured in pixels-per-second throughput; higher scores equate to better performance.


POV-Ray tells essentially the same story as Cinebench, with the Core i9-7900X leading in both the single and multi-threaded tests.

STARS Euler3d
Computational Fluid Dynamics

STARS Euler3d is a computational fluid dynamics benchmark which uses a CFD grid that contains 1.23 million tetrahedral elements and 223 thousand nodes. The benchmark executable advances a mach 0.50 Advisory Group for Aerospace Research, or AGARD, flow solution for an aeroelastic test wing. The benchmark score is reported as a CFD cycle frequency in Hertz.

This benchmark is multi-threaded, but is also dependent on platform bandwidth, so the final results are not determined by compute performance alone. Cache and memory bandwidth and latency affect the score as well...


Once again, we see the Core i9-7900X leading the pack. The processor's core count and high-clocks, coupled to its larger L2 cache and higher-clocked DDR4 memory result in the highest score we've seen in this benchmark to date, on a desktop platform. The Core i7-7740X's slightly faster memory also give it an edge over the Core i7-7700K.

Related content