Yup. The door had weird failure cases that needed a recall.
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Connectors and cables is damn near Masters level in knowledge and application. Its a rarely studied and often ignored piece of engineering. The more you learn about them, the crazier it gets.
That being said, this news that the 4090 and 5090 are using but one shunt resistor for all 6 power pins is horrifying to me. I'm not Power Engineer but it looks horrifyingly wrong to my napkin math.
People underestimate the problems of physical design or the design effort needed to make good designs.
A bit off topic, but this is something HN might enjoy. It’s a video by a mechanical engineer that worked for Tesla, Apple and a NASCAR team about Tesla door handles over time.
I see content like this, and it inspires me for what I want my retirement to be like. Just some crazy old eccentric puttering about, tinkering in his workshop. I want my back yard to look like a solar punk world's fair.
A card that draws 600 watts likely already has more than 6 phases of power conversion, so it could put a separate phase on each pin, and one more on the PCIe slot power, and then guarantee load balancing as well as being able to detect any single broken connection.
Yeah, but we also have reliable mature connectors for decades, and they try to make new connectors and it’s not rocket science to transfer that kind of load.
Ford Focus Mk3 and Prius Prime 2024.
Yup. The door had weird failure cases that needed a recall.
--------
Connectors and cables is damn near Masters level in knowledge and application. Its a rarely studied and often ignored piece of engineering. The more you learn about them, the crazier it gets.
That being said, this news that the 4090 and 5090 are using but one shunt resistor for all 6 power pins is horrifying to me. I'm not Power Engineer but it looks horrifyingly wrong to my napkin math.
People underestimate the problems of physical design or the design effort needed to make good designs.