4 ms·
The voltage step-down is already in place, from 12V to whatever 1V or 0.8V is needed. Doing the same thing starting from 48V instead of 12V does not change anyt
by mpreda 2y ago
The voltage step-down is already in place, from 12V to whatever 1V or 0.8V is needed. Doing the same thing starting from 48V instead of 12V does not change anything fundamentally, I guess.
- ta988 2y agoIt changes a lot. You are switching at different frequencies and although the currents are smaller, there is an increased cost if you want to do it efficiently and not have too many losses. But anyway for consumer products this is unlikely to happen because it would force users to get new power supplies which would reduce their sales quite drastically at least for the first one they make like that. The solution would maybe be to make a low volume 48V card and slowly move people over it showing them it is better? Anyway this is clearly not a case of "just use X" where X is 48V. It is much more subtle than that.
- jeffbee 2y ago> a low volume 48V card I wouldn't be shocked if someone told me that Nvidia already sells more 48V parts than consumer 12V parts.
- deleted 2y ago[deleted]
- fooker 2y ago48V would work with significantly cheaper wiring.