I seem to recall there are a couple of high end cards
that need *two* such
connectors due to their insane power consumption. Something like 225W just for
the graphics card...
Hmm... I have a graphics display system that has 3 5V 150A PSUs. That's
around 10 times that amount of power.
Of course thing thing lives in a 6' rack cabinet, has around 5000 ICs in
it (including over 3000 DRAMs), and for the time (27 years ago) was very
high end. It's an I2S Model 70/E display for a PDP11 with 2 memory boxes
(it could take up to 4, but even the 2 I have give me 6 byteplanes...)
-tony