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 500 to 550 watts, even together with the CPU, if you count up to 10 ms. Because that is what the power supply units can still “see”. With a little reserve, 650 watts is certainly enough.
With this in mind, my power supply recommendation for the MSRP card of the GeForce RTX 4070 Ti Super is that a modern 650 to 750 watt gold or platinum power supply should get you there quite safely. If you want to overclock, you don’t really need to plan much more, which is especially true for the board partner cards.
- 1 - Introduction, technical data and technology
- 2 - Test system and measuring equipment
- 3 - Teardown: PCB, components and cooler
- 4 - Teardown: Material analysis
- 5 - Gaming Performance FHD (1920 x 1080)
- 6 - Gaming-Performance WQHD (2560 x 1440)
- 7 - Gaming Performance Ultra-HD (3840 x 2160)
- 8 - Details: Power consumption and load distribution
- 9 - Load peaks, cutting and power supply recommendation
- 10 - Temperatures, clock rates and infrared analysis including pad mod
- 11 - Fan curves and noise
- 12 - Summary and conclusion
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