AMD Ryzen 9 5900X - Review

The AMD Ryzen 9 5900X is one of the best CPUs right now, whether it's application software or gaming. The story of better single-threading performance is no longer passing as new versions of applications increasingly rely on multi-core processor architecture. With the release of Zen 3 processors and certainly their strongest Ryzen 9 copies, Intel lost the race for the fastest and most powerful PC processor today. 

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AMD RYZEN 9 5900X

The AMD Ryzen 9 5900X is the second most powerful processor in the current Ryzen 5000 series of CPUs using the 7nm TSMC FinFET manufacturing process. The code name of these processors is "Vermeer," and they represent a further upgrade of capabilities and performance in the form of Zen 3 micro-architecture that brings a performance improvement of 19% compared to "Matisse" predecessors. Since we introduced the strongest Ryzen 9 5950X, today we will deal with the Ryzen 9 5900X model, which is just like the one mentioned in the class of competing Intel Core i9 10900K / F models.

The Ryzen 9 5900X has 12 physical cores at its disposal and, with the help of SMT technology, duplicates them into 24 logical cores available to the Windows operating system and corresponding applications. The cores have 6 MB of exclusive secondary (L2) and 64 MB of shared tertiary (L3) memory for data caching.

Zen 3 cores operate at a base frequency of 3.7 GHz and with the help of automatic overclocking systems in the form of PBO 2 and XFR 2 functions, reach a maximum operating value of 4.8 GHz, which in the presence of more efficient cooling solutions (coolers) can be even higher.

Zen 3 cores are physically grouped into CCD cores, interconnected by the Infinity Fabric bus through which they communicate and balance the degree of load. In addition to the processor cores, the Ryzen CPU chip also contains a cIOD core, which is a system controller with which the cores communicate with the system memory, chipset, the first M.2 SSD device, and graphics card. It also has a section for arbitrating PCIe 4.0 transport paths and controlling high-speed USB 3.2 ports.

The memory controller provides maximum performance in dual-channel RAM mode. The factory declared maximum operating frequency of DDR4 modules is 3200 MHz, but we know that even better results are achieved at 3600 MHz and even higher (4000 MHz) in the presence of good RAM modules and "Daisy Chain" motherboards when synchronizing the memory controller, RAM and Infinity Fabric buses on practically the same frequency (1: 1: 1).

The average consumption of this processor is 105W of electricity, while in sleep mode and maximum engagement - the values deviate from some 27-145W. The maximum temperature threshold is set at 90 degrees, after which the protection mechanism against overheating works by lowering the operating frequency, voltage, consumption, and finally the current operating temperature.

The presence of good cooling directly affects the performance, ie the ability of the processor and Zen 3 cores to achieve the highest possible operating frequencies and maintain themselves during a longer period of operation at the maximum achieved values. Therefore, in the case of the Ryzen 5000 series and especially the Ryzen 9 model, it is necessary to have the best possible cooler and cooling system.

The processor comes in AM4 packaging, which means that it is primarily intended for work in combination with X570 and B550 based motherboards, and through updated versions of BIOS and AGESA code, compatibility with certain models based on X470 and B450 chipsets is enabled.

AMD Ryzen 9 5900X - Preformance

MB:	ASRock X570
CPU:	AMD Ryzen 9 5900X
RAM:	32GB (2x16GB) GSkill 3600 CL16 2R
VGA:	AMD Radeon RX 5700 XT 8G GDDR6
SSD:	ADATA SU800 2TB ADATA Gammix S11 Pro 240GB M.2, NVMe x4
Cooler:	CM Master Liquid 240 RGB
PSU:	Cooler Master MWE 650 Gold

Preformance:

AMD Ryzen 9 5900X - Conclusion

The AMD Ryzen 9 5900X has shown why Zen 3 processors are currently considered by many to be the best choice for a high-performance desktop PC. A large number of cores and logic processors are simply unbeatable in a multithreading scenario while at the same time improving the performance of individual cores compared to the previous generation Ryzen processors.

Modern applications are using multi-core processors more and more, so "single-threading" charts have realistically become the last argument of Intel marketing - until the advent of Zen 3 models, which in this regard put a definite point on the question of which is the best and fastest PC processor today.