unclewebb
ThrottleStop & RealTemp Author
- Joined
- Jun 1, 2008
- Messages
- 7,834 (1.31/day)
If you are seeing a 2,500 point drop during the 3D Mark CPU test then something else is going on. There should be zero difference between Sync MMIO and checking the MMIO Lock box.3DMark CPU Test
Turn on Nvidia GPU monitoring in the Options window and then check the Log File box on the main screen of ThrottleStop. Run the two tests again and then compare the data in the log files. A big drop in performance might be because the CPU is power limit throttling or thermal throttling or as mentioned, maybe the Nvidia GPU is being throttled. Maybe Windows 11 screwed up and sometimes it runs tasks on the E cores when tasks during a benchmark should be running on the P cores.
Make sure Sync MMIO is not checked before switching to Lock MMIO. In theory this should not make any difference but one user reported a problem when he used Lock MMIO with Sync MMIO still checked. You need to reboot to reset the CPU if you have used Lock MMIO.
Attach a log file to your next post. If you are seeing a 15% difference in 3D Mark, the log file should show that either the CPU or Nvidia GPU are not running at the same speed when testing.