Joined: 15 May 99
FYI, may need to transition MB to 64-bit next summer, even if it doesn’t benefit from it...
Joined: 22 May 99
Just in case you missed it, there is now a Mac on the first page of the Top Computer list,
ID: 6796479 : #16 : TBar : 7.8.4 :  NVIDIA GeForce GTX 1050 Ti (4095MB) driver: 5901.79 : Darwin 16.7.0
It's been a while since that happened. The last time was back when there were Many APs around and the machine was running ATI GPUs.
The current Special Apps work fine in everything up to High Sierra, seems to be a BOINC problem when exiting the completed tasks in 10.13.x. Since only the Mac Pro 5,1 machines can run 10.13.x, I'd suggest anyone with a Classic Mac Pro stay with Sierra 10.12.6 and avoid 10.13.x if you wish to run the CUDA Special App. If anyone is interested, you could probably place one of these old Macs fairly high up in the Top Computer list with just a few higher end nVidia cards. The same problems exist with the Mac versions of the Special App, the last version that works with best results is zi3v CUDA 9. The zi3x versions tend to produce a steady stream of Invalid Overflows. The version for Sierra is here, http://www.arkayn.us/forum/index.php?topic=191.msg4411#msg4411
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