What GPU pulls 350W?
Quite a few pull in excess of that, in fact.
You should follow the discussion before making such bold statements.
There is a big difference between GPUs and the KNC board.
KNC board uses 3x 12V circuits to carry up to 15A of current.
A GPU uses 6x 12V circuits to carry up to 23A of current.
Which one looks more to you?
Also can you show me which GPU "pull in excess of that"?