La herramienta de benchmark CPU-Z se actualiza a la versión 1.79

La conocida herramienta de benchmark CPU-Z se actualiza a la versión 1.79

Todos en nuestra vida hemos utilizado herramientas de benchmark como lo son AIDA64, 3DMark o CPU-Z para testear ciertos aspectos de nuestro o pc o simplemente queremos conocer el rendimiento general de este. En este caso el último programa mencionado ha recibido una actualización que ha causado algo de controversia al mostrar puntuaciones mucho menores a los mismos procesadores que en versiones pasadas.

Esta nueva actualización cambiará completamente la manera en la que se mide el rendimiento de la CPU, en un principio Ryzen había podido conseguir puntuaciones más altas y se habían aprovechado mucho más que los Intel Kaby Lake / Skylake por cuestiones de frecuencias de reloj. Esta mejora de hasta un 30% en los Ryzen hizo  que los resultados se convirtieran en un sistema de referencia muy engañoso.

Tras descargar la nueva versión del software todos los  resultados de procesadores de la gama Ryzen empeorarán bastante y esto se debe a que ahora el benchmark ofrecerá mayor soporte a las CPUs con una capacidad multihilo superior, que es lo que verdaderamente muestra el potencial de un procesador. La nueva actualización fue sacada hace casi 10 días y multitud de usuarios ya se estaban preguntando el motivo de este cambio.

Why are the scores much lower than the previous version, and can they be compared ?

At the time the first benchmark was released in 2015, only a few parts included 8 cores (like the 5960X). In the meantime, Ryzen was introduced, and therefore 6 and 8-cores processors will become more and more prevalent. As a result, more models with 10, 12 and 16 cores are soon to be released. More cores mean higher multi-threaded scores, and a lower scale makes the comparisons easier. The new benchmark uses a new algorithm, and its scores can not be compared with the previous version.

Why do the Ryzen performance decrease in comparison to the Intel processors with the new benchmark ?

When the 1st version of the benchmark was released in 2015, it was tested on all existing architectures to check the relevancy of the scores. Almsot two years later, Ryzen was introduced, and scored – core for core and clock for clock – almost 30% higher than Intel Skylake. After a deep investigation, we found out that the code of the benchmark felt into a special case on Ryzen microarchitecture because of an unexpected sequence of integer instructions. These operations added a noticeable but similar delay in all existing microarchitectures at the time the previous benchmark was developed. When Ryzen was released, we found out that their ALUs executed this unexpected sequence in a much more efficient way, leading to results that mismatch the average performance of that new architecture. We reviewed many software and synthetics benchmarks without being able to find a single case where such a performance boost occurs. We’re now convinced that this special case is very unlikely to happen in real-world applications. Our new algorithm described below does not exhibit this behaviour.

What algorithm does the benchmark use, and what instruction set is used ?

The new benchmark computes a 2-dimensional noise function, that could typically be used in a game to generate a procedural map. The code is written in C++, and compiled with Visual C++ 2008. No special instruction set is used, but the x64 version uses scalar SSE/SSE2 instructions to achieve floating point operations, whereas the 32-bit version keeps using the legacy x87 instructions, resulting in almost half of the x64 performance.

When will the benchmark pages be updated with the new benchmark results ?

The new benchmark was released 10 days ago, and thousands of scores were recorded in the meantime, We’re curently building a new database with these results and plan to put it online during this week.

 

Fuente: Overclock3D

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