Savings rolls or not?
In order to complete the confusion with the 640 vs. 512 shaders, AMD meanwhile put several values for the boardpower online, where for the "slimmed-down version" even under 40 watts in gaming were circulated. However, this value can be safely forgotten, because we get to almost 47 watts in the worst-case gaming, which means a fairly exact point landing on the now finally released 50 watts. In the stress test, the card stays even lower due to the very restrictive throttling.
In the Idle, the value could be even better, because the fan rotates unnecessarily fast at almost 1600 rpm. You could easily save a watt. But there are seven, which in itself is low enough to turn a nose at the energy supplier.
More about Gaming Loop
If you look at the curve, you can see some quite violent fluctuations. Despite an intelligent low-pass filter, we measure peaks of up to 59 watts, because only the average value remains below the target limit for board power.
Similarly, the curves of the flowing currents are also shaped and it gets really hilarious. We can see very well when Power Tune pulls the plug and throttles it, because every violent tip is immediately followed by the fall into the hole.
Stress test in detail
The load is much more constant, so that no seats are measurable anymore. It stays continuously below 50 watts, which of course is also due to the throttling (clock, voltage). There is simply no more. Not even by manual overclocking.
The course curves for the currents are not surprising, because here too, rather unexcited continuous load is called for.
Loading of the motherboard slot
Finally, let's look at how well the card copes with the set standards for the motherboard slot. The very low power consumption alone would have allowed the conclusion that everything remains in the deep green range. And right: even the short-term peak of 4.6 amperes remains far below the 5.5 ampere that the PCI SIG sets as a limit value. You can really live with that.
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