Just adding to black_zion comment.
Here is what is recommended for your SLI GPUs as far as minimum requirements for system PSU: PSU REQUIREMENTS - RealHardTechX
Plus the AMD Threadripper 2990WX will use around 450+ watts under heavy loads without Overclocking.
Plus your heavy duty CPU Cooler and RAM and Hard drives/SSDs etc.
I would look at a PSU of at least 1500 watts minimum.
As Black_Zion mentioned, try to purchase one of the metal PSUs like Bronze, Silver, Gold, or Platinum.
Two RX 2080 needs a minimum PSU of 800 watts for system usage, as you mentioned: https://www.game-debate.com/hardware/index.php?gid=4035&graphics=GeForce%20RTX%202080%20SLI
I imagine that the GPUs will use more wattage under heavy loads than it TDP of 360 Watts and the 2995 WX CPU under heavy loads can use up to 450 watts without overclocking.
So as long as the CPU and GPU aren't Overclocked, 1300 watts, in my opinion, will be fine as you suggested.
jamesw767, you have asked an interesting and controversial question! Here are my specifications:
MSI X399 Creation, Threadripper 2990WX, 3xSamsung SSD 970 EVO RAID0, 4xSSD 960 EVO on
MSI AeroXpander RAID10, 1TB & 500 GB WD Black, G.SKILL Flare X F4-3200C14Q-32GFX,
Windows 10 x64 Pro, EnerMax-MaxTytan-EDT1250EWT, Enermx Liqtech TR4 280 CPU Cooler,
Radeon RX580, Aquantia 10 GbpS Ethernet NIC, UEFI E7B92AMS.120, AGESA SummitPI-SP3r2-
1.1.0.2.
I have a lot less video than you but still 1250 Watt PS. I tend to be a bit heavy handed with power and cooling, but have never had problems. There are recent threads here of 2990WX users running 850Watts and 1700Watts. The user with 850Watts hangs a lot and often runs only 16 cores, but swears by the power supply used. It is worth looking at these threads.
I am really curious to understand why you think your PS is failing and much more about your current setup (similar to my specifications above). Also please post a screenshot of Ryzen Master (RM). Here is mine I use for Cinebench:
Please notice I have PPT set to 400 Watts and still peg it and I am not really OCing, just allowing PBO to use more power. Power need is very dependent on how you use your system. Here is a great reference for RM: ryzen-master-quick-reference-guide.pdf Please search for the file, posting a link causes delays. Thanks and enjoy, John.
If you believe the PSU is defective, it has a three year warranty on it as per its manufacturer's Website: https://www.lepatek.com/eng/warranty/
The PSU has specific Power connection ports on the PSU for CPUs, GPUs, and other hardware. It says your PSU is made for Dual CPU and Multi-GPU setups.
I would download a free Hardware Monitoring software and see what temperatures and voltages are showing when it crashes.
You might want to try OCCT that has a PSU test. It will show you temperatures and voltages during the testing. Since it crashes with all 32 core enabled. Try using Ryzen Master Legacy mode to disable half the cores so that you will be able to test the PSU and check its outputs while under load. You can always using a Multi-meter to check the 12 vdc output while the computer is running by testing a 4 pin Molex connector.
It is possible that your PSU might be good since it is such a High Quality high wattage PSU. It could be that something is not compatible with a 32 core CPU on your computer. But if it should be a failing PSU and you purchased it less than 3 years ago, I would suggest to RMA it and get a replacement if possible and see if your restarts continues with the new PSU.
EDIT: This PSU has more bad reviews than good at the Amazon link. So it is possible your PSU is defective:
What is weird, this PSU is made by Enermax which makes very good PSUs according to Q&A in Amazon Link.
Windows Defender scores just as well as other free antiviruses, so you don't need avast.
As for voltage, programs like AIDA64, HWInfo, and HWMon include voltage monitoring and logging. The important number is +12v. If it drops under 11.95v then it's suspect, under 11.9v you have a problem.
As for power supplies, don't get junk, get SeaSonic, SuperFlower, or Enermax branded units, preferably SeaSonic.
