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Unless I missed a message, nobody pointed out that this is a significant misinterpretation of power supply ratings. A PC power supply provides: -12, +3.3, +5 and +12V outputs for various purposes in the system. There are often multiple independent channels for the different voltages. If any of these lines tries to draw too much more current than it's rated for, most PSUs will try and protect themselves (shut down). Just because the total wattage of all of the things in your computer is less than the total wattage of the PSU does NOT mean you have a stable system. It means you MAY have a stable system, depending on how much you're drawing at different voltages. -------------------------------------------------------------------------------------- Steven Ludtke, Ph.D. <[log in to unmask]<mailto:[log in to unmask]>> Baylor College of Medicine Charles C. Bell Jr., Professor of Structural Biology Dept. of Biochemistry and Molecular Biology (www.bcm.edu/biochem<http://www.bcm.edu/biochem>) Academic Director, CryoEM Core (cryoem.bcm.edu<http://cryoem.bcm.edu>) Co-Director CIBR Center (www.bcm.edu/research/cibr<http://www.bcm.edu/research/cibr>) On May 31, 2019, at 7:45 PM, Adrian Koh <[log in to unmask]<mailto:[log in to unmask]>> wrote: ***CAUTION:*** This email is not from a BCM Source. Only click links or open attachments you know are safe. ________________________________ Hi, Go into your BIOS settings and turn automatic overclocking and PBO (Precision Boost Overdrive) to disabled or off. Also, try dropping your RAM speeds in BIOS as well. Best regards, Koh Fujiet, Adrian On Fri, May 31, 2019 at 12:37 PM Alpay Burak Seven <[log in to unmask]<mailto:[log in to unmask]>> wrote: I think 1600Watt is still cutting close on your system. These cards can go beyond 300W each. We had a similar instance and we had to upgrade the power supply. Ours was for 2 gpu system so it was easy to find a power supply at around 1000-1200 watt. There are systems natively supports two power supplies. If yours can, you may use 2 power supplies. On Thu, May 30, 2019, 10:39 PM Daniel Asarnow <[log in to unmask]<mailto:[log in to unmask]>> wrote: I would recommend trying to increase the system memory (and perhaps CPU) voltage slightly. The former step seems to have helped with our Ryzen workstation. Best, -da On Thu, May 30, 2019 at 11:48 AM Abhiram Chintangal <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hey all, I am troubleshooting one of our new thread ripper based workstations which crashes when using all four GPU's with Relion. The machine is running a thread-ripper 2990x with 4x2080ti's and its powered by a 1500W power supply. Anyone here run into something similar? Initially I was under the impression that its a power-supply problem, but the machine seems quite stable when running gpu/cpu bechmarks together that saturate all the cores and gpu's at the same time. To rule out memory, I also ran memtest86 on the machine. Any ideas are appreciated? 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