High resolution measurements in the ATX 3.0 range under 1 ms
Because I still want to know it exactly, I resolve the whole thing even higher and take 20 ms as the total runtime. The intervals of 10 microseconds are still measurable and we can see the voltage here as a gray curve, whose average value is clearly above 12 volts, but which nevertheless still alternates a bit within the permissible range. I already wrote something about ATX 3.0 and the voltages. And yes, there are also clear peaks over 20 amps.
If you then convert that to the power consumption in watts, you get this picture:
I also did the whole thing again for the torture loop, where we get to admire the regular drops. First, the currents again, but they still have plenty of strange, sporadically recurring drops in each rise. This looks like a violent hiccup before the power is really throttled back shortly after.
And then total wattage again:
Power supply recommendation
Now we come to the point that completely reduces the expected sensation of exploding power supplies to absurdity. So you should always stay well below 500 watts even together with the CPU, if you count up to 10 ms. Because it is what the power supplies still “see”. With some reserve for the rest and a bit of OC, 550 watts is sufficient.
In this respect, I also formulate my power supply recommendation for the Radeon RX 7600 MBA that you should still be able to get by quite safely with a modern 500 watt Gold or Platinum power supply. If you want to overclock, you don’t really need to plan much more, but 550 watts certainly won’t hurt either.
- 1 - Introduction, technical data and technology
- 2 - Test system and igor'sLAB MIFCOM-PC
- 3 - Teardown: PCB, compnents and 8-Pin issues
- 4 - Teardown: Cooler and thermal grease
- 5 - Gaming performance Full-HD (1920 x 1080)
- 6 - Gaming performance WQHD (2560 x 1440)
- 7 - Latencies, DLSS vs. FSR
- 8 - Details: Power consumption and load balancing
- 9 - Transients, capping and PSU recommendation
- 10 - Temperatures, clock rate and thermal imaging
- 11 - Fan curves, noise and sound sample
- 12 - Summary and conclusion
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