Power consumption in various load scenarios
The idle power consumption could be a little lower, but there is no bling bling. The rest is self-explanatory and the self-imposed TDP of 190 watts is adhered to quite precisely or even just undercut
As the card only has a single 6 2 pin connector for the power supply, the card draws up to 4.2 amps via the motherboard slot. This is within the permissible range, but it also shows that some phases had to be supplied here.
Load peaks and power supply recommendation
You should plan around 250 watts for the graphics card alone, as the supervisor chips of most power supply units still react to load peaks of between 5 and 20 ms. This keeps you on the safe side. However, my sample did occasionally sporadically hiccup during compute and sometimes demanded up to 340 watts in a 20 ms window. You can see this below. However, as this is the exception and not the rule, I have not included it in the diagram, but of course I have to mention it.
Now let’s move on to the measurements in the 20 ms window, i.e. what power supplies can still “see” and where their protective circuits can take effect:
Now I’ll break down such a 20 ms interval once again to show you the true load changes, which are usually less than 1 ms. This is also the point where the unspeakable ATX 3.0 specification takes root.
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