High-resolution measurements in the ATX 3.0 range under 1 ms
But because I still want to know exactly, I’ll break it down even further and take 20 ms as the total runtime. The intervals of 10 microseconds can still be reasonably measured and we can also see the voltage here as a gray curve, the average value of which is well above 12 volts, but which nevertheless still alternates somewhat within the permissible range. I have already written something about ATX 3.0 and the voltages.
If you then convert this to the power consumption in watts, you get this picture:
I also did the whole thing again for the Torture Loop, where we can admire the regular drops. First of all, the currents again, but with lots of strange, sporadically recurring drops in each rise. This looks like a violent hiccup before the power is really throttled back shortly afterwards. The super variant has to brake a little more frequently, logically.
And then the total wattage again:
Power supply recommendation
Now we come to the point that makes a complete mockery of the expected sensation of exploding power supply units. So you should always stay well below 450 to 500 watts, even together with the CPU, if you count up to 10 ms. Because that is what the power supply units can still “see”. So with a little reserve, 600 watts is enough.
With this in mind, my power supply recommendation for the GeForce RTX 4070 is that a modern 650-watt gold or platinum power supply should get you there quite safely. If you want to overclock, you don’t really have to plan much more, which is especially true for the board partner cards.
- 1 - Introduction, technical Data and Features
- 2 - Test System and Equipment
- 3 - Teardown: PCB, Components and Cooler
- 4 - Material Analysis and a Surprise
- 5 - Gaming Performance FHD (1920 x 1080)
- 6 - Gaming-Performance WQHD (2560 x 1440)
- 7 - Gaming Performance Ultra-HD (3840 x 2160)
- 8 - Gaming Performance DLSS vs. FSR
- 9 - Gaming Performance Frame Generation
- 10 - Latencies in Detail
- 11 - Workstation Graphics and Rendering
- 12 - Power Consumption and Load Balancing
- 13 - Transients and PSU Recommendation
- 14 - Temperatures, Clock Rate and Infrared Analysis
- 15 - Fan Curves and Noise
- 16 - Summary and Conclusion
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