Grafikkarten Testberichte VGA

Powercolor RX 5700 XT Red Devil under test – force is mass times acceleration | English Review

Powercolor sets with the RX 5700 XT Red Devil a decent mark - both in the performance and the massive cooler as well as in the price. In addition, there is a switchable Silent-BIOS that really lives up to its name. But I don't want to spoil too much, I want to test. So read it yourself.

Leistungsaufnahme und Lasten

Let us first consider the power consumption in various load conditions from idle to absolute maximum as an average value over a longer measurement period. The two BIOS modes are interesting here, because for a total performance difference of up to 8 percent, up to 22 percent more electrical power is required!

The temperature-dependent voltage curve is also interesting, because we see that the firmware activates the limiter at exactly 1.2 volts:

The load distribution on the rails is perfect, because the maximum permissible 5.5 amperes of the motherboard slot are never exceeded in normal operation or some OC experiments.

Power supply rating and peak loads/currents

As I already proved in detail in my basic article “The fight of graphics card against power supply – power consumption and load peaks demystified”, there are also short-term higher loads in the millisecond range, which can already lead to inexplicable shutdowns in unfavorably designed or not appropriately equipped power supplies. The TBP (Typical Board Power) measured by the graphics card manufacturer or the reviewers alone does not really help here for a stable design of the system.


Peaks with intervals between 1 and 10 ms can lead to shutdowns with very fast reacting protective circuits (OPP, OCP), especially with multi-rail power supplies, even though the average power consumption is still within the standard. For this card I would therefore calculate with almost 300 watts for the graphics card as such, in order to have sufficient reserves in case of emergency. A short excerpt with higher resolution now shows us the 20 ms intervals, how I let them run automatically to determine the value:

Detail input of average power consumption and flowing currents

As usual, I now also put the power consumption and the flowing currents aside as detailed graphics of my oscillograph measurements. A service that hardly anyone else offers and that shows how the VGA cards tick in detail:



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About the author

Igor Wallossek

Chefredakteur und Namensgeber von igor'sLAB als inhaltlichem Nachfolger von Tom's Hardware Deutschland, deren Lizenz im Juni 2019 zurückgegeben wurde, um den qualitativen Ansprüchen der Webinhalte und Herausforderungen der neuen Medien wie z.B. YouTube mit einem eigenen Kanal besser gerecht werden zu können.

Computer-Nerd seit 1983, Audio-Freak seit 1979 und seit über 50 Jahren so ziemlich offen für alles, was einen Stecker oder einen Akku hat.

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