Ryzen Voltage Fluctuations

[ntarki]

So I build my first Ryzen today (Build lots of systems in the past). Booted on the first try everything ok, I get into Windows 10 ( Fresh install, day 0) and crashes (some bsod about Clock_watchdog_timeout). After 10 or so crashes after 1-6min when in Windows I decide to make a bootable of latest Windows 10 build.

For 6+  hours seems to be going just fine, no crashes or indications. However I noticed something unusual about the CPU voltage. When it is idle or light load it goes from 0.8-1.4V ?!?! but when under 100% load it stays at 1.22-1.24V. Is this normal? Or is this indication that there is something wrong with my power supply/motherboard/cpu? If anyone can help out please so I can further troubleshoot and RMA if there is something faulty. Details of the system below.

• Motherboard: MSI B350 Tomahawk (Latest BIOS 7A34v14, Default settings)
• CPU: AMD Ryzen 5 Six-Core 1600 3.2 GHz (STOCK, no OC)
• Memory: Corsair 16GB (2*8GB) DDR4 (Running at 2133Mhz, NOT 3200 at which is rated  | Correct slots for dual ram)
• OS: Windows 10 x64 (Version:1703  OS Build: 150633.250) Performance mode
• GPU: NVIDIA GeForce GTX 1060 6GB  (6 GB)

I made a video of the fluctuations under no load and load but is potato quality sorry didn't change obs settings (make sure 720p to make out the numbers) https://www.youtube.com/watch?v=zViPKF5oj3o

[tom_w141]

19 minutes ago, ntarki said:

So I build my first Ryzen today (Build lots of systems in the past). Booted on the first try everything ok, I get into Windows 10 ( Fresh install, day 0) and crashes (some bsod about Clock_watchdog_timeout). After 10 or so crashes after 1-6min when in Windows I decide to make a bootable of latest Windows 10 build.

For 6+  hours seems to be going just fine, no crashes or indications. However I noticed something unusual about the CPU voltage. When it is idle or light load it goes from 0.8-1.4V ?!?! but when under 100% load it stays at 1.22-1.24V. Is this normal? Or is this indication that there is something wrong with my power supply/motherboard/cpu? If anyone can help out please so I can further troubleshoot and RMA if there is something faulty. Details of the system below.

• Motherboard: MSI B350 Tomahawk (Latest BIOS 7A34v14, Default settings)
• CPU: AMD Ryzen 5 Six-Core 1600 3.2 GHz (STOCK, no OC)
• Memory: Corsair 16GB (2*8GB) DDR4 (Running at 2133Mhz, NOT 3200 at which is rated  | Correct slots for dual ram)
• OS: Windows 10 x64 (Version:1703  OS Build: 150633.250) Performance mode
• GPU: NVIDIA GeForce GTX 1060 6GB  (6 GB)

I made a video of the fluctuations under no load and load but is potato quality sorry didn't change obs settings (make sure 720p to make out the numbers) https://www.youtube.com/watch?v=zViPKF5oj3o

Use something like HWinfo64 and have the sensors only page open while you do your daily activities for ~ 1 hour or so. Next look at vcore min, max and avg. Spikes of up to 1.4 on auto are fine ryzen is safe up to 1.45V (sustained) take not of your avg. If below 1.4 you are good.