Comes from here [1]. Basically 100 racks of H vs 8 racks of B.

I think there may be a typo though, I assume this also includes liquid-cooled vs air-cooled.

[1] https://nvdam.widen.net/s/xqt56dflgh/nvidia-blackwell-archit...

Did you read that in the linked article? I couldn’t find it. But maybe due to the better efficiency with regard to the performance boost (5x) and the ability to now use 27 trillion parameters versus 1.7 Trillion, one can presumably finish the same amount of work in 1/25th of the time and bam, reduction in power consumption. As you say, I’m skeptical the max power draw itself is 25x lower.