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Apple 2023 Mac Pro M2 Ultra: Buggy Performance with GPU and CPU that Requires Reboot to Fix

UPDATE 2023-07-18: 2023 Mac Pro M2 Ultra: Sleep/Wakeup Causes Drastic Loss of Performance for both CPU and GPU

...

Over performance of the Apple 2023 Mac Pro M2 Ultra is outstanding.

But it appears that the Apple M2 Ultra chip and supporting operating system were rushed out the door in too many ways.

2023 Mac Pro M2 Ultra: Dropping CPU Performance at 3 or more CPU Cores

2023 Mac Pro M2 Ultra: Large Losses in CPU and GPU Performance; Rebooting Recovers temporarily

2023 Mac Pro M2 Ultra: Large Losses in GPU Performance Require Reboot

macOS Ventura: Memory Leak in QuickLookSatellite?

Bleeding Edge Computing: In Less than 24 hours, macOS Ventura Seemingly Self Destructs (kernel panic with 4 or more NVMe SSDs)

Below, same test and totally repeatable: red is degraded, green is after reboot. There is more than 50% performance loss with 1 or 2 CPU cores and it remains degraded with more CPU cores. Only rebooting fixes this.

It’s like you bought an M2 Max instead of an M2 Ultra.

Apple 2023 Mac Pro M2 Ultra: degraded performance before and after reboot
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