Power consumption in factory settings as a summary
The ample 17 watts in idle (12 and 3.3 volts) are ok. With a second monitor and a different resolution, however, this quickly becomes 40 watts and more. Incidentally, we can see very clearly that the full TBP of 285 watts is rarely exhausted and only the Torture loop or a single game exceeds the limit or even reaches it at all. Normally, it is always significantly less.
Load distribution between the PCIe slot and the PCIe sockets
The card makes noticeable use of the PCIe slot, especially when gaming. However, the maximum flowing currents of 2.9 amps are well below the maximum permitted 5.5 amps.
Rough 20 ms intervals
Let’s first take a look at the flowing currents. Measurements were taken at rough 20 ms intervals, i.e. around 50 times per second, in order to simulate the load on the supervisor chip of the power supply units (switch-off). We can see that even short load peaks are capped at 34 A at the latest, but a real limitation looks different. This is not a small amount and also something that shows us the control frenzy of Boost.
Nevertheless, we still need to take a look at the voltages, or the product of voltage and current flow. I have already written that I have measured different power supply connections here, even if all connections meet again somehow on the graphics card board. What we can now see here as much clearer fluctuations and peaks is due to the partially slightly overvoltage power supply and therefore to the voltage and not the currents. This is due to technical reasons, but is not a problem. However, we can also see that the few peaks at just under or slightly over 460 watts are not solely due to the flowing current (graphics card), but actually result from the power supply! This is also due to the topology and, above all, the rather puny input filter with only one coil per rail.
The Torture test is hardly any different. The super variant now regulates somewhat more hectically.
If you now add the voltage again, you can see a stronger ripple, which in turn results from the somewhat jittery operating voltage. However, to the power supply’s credit, it must also be said that this affects all current products from all manufacturers and can hardly be avoided.
- 1 - Introduction, technical data and technology
- 2 - Test system and measuring equipment
- 3 - Teardown: Cooler
- 4 - Teardown: PCB, layout and components
- 5 - Teardown: Detailed material analysis
- 6 - Gaming Performance FHD (1920 x 1080)
- 7 - Gaming-Performance WQHD (2560 x 1440)
- 8 - Gaming Performance Ultra-HD (3840 x 2160)
- 9 - Gaming Performance DLSS / FSR
- 10 - Power consumption and load balancing
- 11 - Load peaks, clipping and PSU recommendation
- 12 - Temperatures, clock rates and infrared analysis
- 13 - Fan curves and noise level with audio sample
- 14 - Summary and conclusion
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