MP 7,1 How to get Mac Pro 7.1 fans to spin up

Beliyaal

macrumors member
Original poster
Feb 14, 2008
53
19
If you want to hear what the Mac Pro sounds like with the fans spun up you can try Prime95 with these torture test settings and wait a couple minutes:

1579430626462.png


Almost 300 W CPU power, and additionally 224 W for memory. I only have 6 dimms, might go even higher with 12.

To get Prime95 to work on Catalina:
Bash:
chmod +x Prime95.app/Contents/MacOS/Prime95
 

astrorider

macrumors 6502a
Sep 25, 2008
521
43
Or boot up holding the D key to run Apple’s hardware diagnostics. The fans will go to max, I’m assuming as part of the test.
 

ncrypt

macrumors 6502
May 16, 2012
341
232
UK
Also if you just turn the chassis handle (do not lift) the fans all preemptively spin up.
 
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