AMD Ryzen 5 2600X review - Power Consumption

by Hilbert Hagedoorn on: 04/19/2018 03:00 PM [

] 24 comment(s)

Power Consumption

In an IDLE state, a PC (motherboard / processor / GTX 1080 / memory / SSD) consumes roughly 50 Watts. This number depends and will vary per motherboard (added ICs / controllers / wifi / Bluetooth) and PSU (efficiency). Keep in mind that we measure the ENTIRE PC, not just the processor's power consumption. Your average PC can differ from our numbers if you add optical drives, HDDs, soundcards etc.

Various load conditions - there is a dedicated graphics card installed (GTX 1080)

I want to make it very clear that power consumption measurements will differ per PC and setup. Your attached components use power but your motherboard can also have additional ICs installed like an audio controller, 3rd party chips, network controllers, extra SATA controllers, extra USB controllers, and so on. These parts all consume power, so these results are a subjective indication. Next, to that, we stress all CPU cores 100% and thus show peak power consumption. Unless you transcode video with the right software your average power consumption will be much lower. Ryzen 5 2600X and Ryzen 7 2700X definitely consumes more power in heavy-threaded workloads, roughly an additional 35~50 Watts.

We use a stock Wraith LED (air) cooler in this 2600X review. We reach a max temp of 63 Degrees C (Tdie). That is running a 1024M Prime test.

Temperature Reporting

To keep a "consistent fan policy," AMD is forcing 10C offset on only the Ryzen 2700X processors. This makes them report temperature a good 10C above what the sensor reads. The rest of the models on the AM4 Platform have the same maximum tCTL value. The primary temperature reporting sensor of the AMD Ryzen processor is a sensor called “T Control,” or tCTL for short. The tCTL sensor is derived from the junction (Tj) temperature—the interface point between the die and heatspreader—but it may be offset on certain CPU models so that all models on the AM4 Platform have the same maximum tCTL value. This approach ensures that all AMD Ryzen and thus Ryzen Threadripper processors have a consistent fan policy.

Product Name	True Junction Temp (Tdie)	tCTL Offset for Fan Policy	Temp Reported by (tCTL)
Threadripper 1950X	43°C	27°C	70°C
Threadripper 1920X	43°C	27°C	70°C
Ryzen 7 2700X	38°C	10°C	48°C
Ryzen 7 2700	38°C	0°C	38°C
Ryzen 5 2600X	38°C	0°C	38°C
Ryzen 5 2600	38°C	0°C	38°C
Ryzen 7 1800X	38°C	20°C	58°C
Ryzen 7 1700X	38°C	20°C	58°C
Ryzen 7 1700	38°C	0°C	38°C

In short, if you use any monitoring software, you need to look at the Tdie as temperature, it's the correct one to look at.

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