https://github.com/geerlingguy/sbc-reviews/issues/21
Power
Idle power draw (at wall): 1.8 W (See note)
Maximum simulated power draw (stress-ng --matrix 0): 9.7 W
During Geekbench multicore benchmark: 7.9 W
During top500 HPL benchmark: 11 W (2.75 Gflops/W)
Re:Raspberry Pi Ltd is considering an IPO
by margalabargala on Wednesday May 15, 2024 @06:50PM
(#40373327)
Huh. Maybe I had a bad power supply, then. Interesting.
This is compellingly saying that I was too hasty in assuming the low voltage warnings were from the 18W supply topping out. Thank you for this.
Seen same power warnings, when powered by RP4 5V/3A. Had to use 5.1V power supply to get rid of them.
It's been that way since the RP3 - heavy load resulting in rainbow square. Use the official power supply labelled 5.1v and the square disappears
Re:Raspberry Pi Ltd is considering an IPO
by rerdavies on Thursday May 16, 2024 @02:04AM
(#40375645)
Maybe it's a spiky 9.7w. :-/
A very real problem. Also power supply/chip tolerances and a little extra gunk on a pin somewhere can line up unfavorably.
Personally, I had tons of power issues due to underspec cables with a Pi4. Irritating.
But as for whether they're chasing performance, the RP2040 isn't their flagship product. The Pi 5 is.
And I've had a Pi 5, under heavy CPU (not peripheral) load, start throwing undervoltage warnings when using a 5V3A power supply from a Pi 4.