Interestingly , Apple has stated in their promo materials that the CPU socket will provide over 300 Watts of juice . That is just awesomely a lot and makes for some really seriously high end single processor configurations . This is the thing I love about Apple - the over-engineering and over-manufacturing of their top of the line computers .
For instance , no silicon Apple shipped with these machines uses a rated TDP of more than 205 W . On the PC side we'd need to worry Intel's printed specs are too conservative . Historically with the Mac Pros , our Xeons actually consume less juice than the printed specs when placed at full load . I suspect Apple must be under-volting them .
Here's a chart of the W series and the U suffix series Xeons . These are strict single processor system silicon . My 24 Core 6212U that I used in the upgrade absolutely sips power even at load :
View attachment 884136
Now for the bad news and I hate to rain on your parade .
The W-3175X , while consuming 255 W , has the wrong core stepping ( H0 ) . It doesn't match the steppings ( B1 ) of the Xeons Apple ships with the MP 7,1 . My 6212U also has B1 stepping , so I knew there was a reasonably good chance of compatibility . The thing I worried about was intel's marketing of their silicon . Would my Gold 6212U really be in the same subfamily of processors as the W series ? It seems it is .
Unless Apple really felt generous and plans future compatibility with this version , the W-3175X won't work .
