AMD Renoir on B550 in the consumption test

AMD Renoir B550

From the community comes the first part of a consumption and comparison test between the chipsets of the series B450, B550 (test) and X570 with the current 7 nm APUs of the series Ryzen 4000G (Renoir") from AMD. Single-digit consumption values in idle are possible and depend less on the CPU, but rather on the motherboard.

The Zen 2 architecture has the reputation to be unparalleled efficient under full load, but less economical in idling and under partial load.

Renoir and B550 in test

In the first part of his extensive and designed as a consumption and comparison test between the AM4 chipsets B450, B550 and X570 [Reader article] Renoir and B550 - The idle artists? "community member Freiheraus" has looked at whether idle consumption in practice depends on the CPU design (chiplet vs monolithic), or whether other factors such as the motherboard and the implementation of the power saving functions are the decisive parameters for the lowest possible consumption.

I tried to get to the bottom of this hearsay . 

The result is not only exciting findings, but also concrete results that are almost a small bang for a full-fledged, powerful desktop platform.

With the help of the measurement technology of the type of a Voltcraft Energy Logger 3500 and No-Energy NZR (control unit), the author provides interesting results with the following setup:

• AMD Ryzen 5 PRO 4650G
• Asus ROG Strix B550-I Gaming (AGESA Combo-AM4 v2 1.0.0.2)
• 2 32 GB Micron DDR4-3200 ECC CL18-18-18-18-43-1T
• Samsung SSD 960 EVO 500 GB (M.2 PCIe 3.0 x4)
• Noctua NH-U9B SE2 (1 Noctua 92 mm PWM)
• 2 Noctua 80 mm PWM (housing)
• Seasonic Prime Titanium 650W

Numerous applications provide comparative values

In order to be able to draw as extensive a picture as possible, the author used the following applications for his consumption measurements:

• Firefox 80.0.1
• Edge 85.0.564.44
• Cinebench R15.0
• Cinebench R20.060
• Corona 1.3 Benchmark
• DigiCortex Simulation IDE v1.35 Alpha
• wPrime Benchmark v1.20
• 3DMark Time Spy 1.2
• CPU-Z 1.92.2

It depends on the right settings

Here, the Today US reader comes to the following verdict, which can be taken in detail in his reader article, which has also been enhanced with numerous tables and graphs.

Whether Zen 2 has an idle runtime "weakness" depends not only on the CPU design and the chipset used, but also significantly on the motherboard manufacturers and their skills in implementing the power saving features.

Further parts of the series are already in planning and will be submitted in the future as an update to this note.

Give me the clues!

In the "From the Community" category, the editorial team repeatedly focuses on interesting reader articles from the Todayus US forum that deserve special attention.

In order to be able to report on new developments and projects from the community even more often and up-to-date in the future, the editors ask for information in the thread From the community: Your references to interesting reader articles in the forum".