PC Drivers & Software

[theacclaimed]

I am experiencing the issue when playing PUBG. While playing the match, randomly during the match the entire computer will shut off. Afterwards, pressing the power button will not turn the computer back on. I have to flip the switch on the back of the PSU before pressing the power button to get the computer to restart.

I currently have the following test system:

GPU: RX Vega 64 (tested both reference and a Sapphire Nitro+ RX Vega for comparison)

CPU: Ryzen 1800X

Mobo: MSI X370 XPOWER Gaming Titanium (latest bios)

RAM: 16gb 2933mhz

Display: Triple AOC Agon AG241QX 1440p 144Hz freesync

PSU: Seasonic Prime Titanium 1000W

I'm thinking of getting a 1200 or even 1500 watt PSU for RX Vega 64 since this never was happening when using the old R9 Fury. Playing PUBG at 1440p 144Hz freesync I see power consumption over 600 watts from the wall measuring with a Kill-A-Watt from Fry's. Maybe the Seasonic cannot handle the load spikes but I doubt they go over 800 watts so a 1000w should be sufficient. I tested with the computer plugged directly into the outlet wall as well as with a surge protector strip and see the same result.

[locodicegr]

You dont need a bigger PSU...700-800w is more than fine.

Maybe that one you have now is broken, test your system with OCCT.

[theacclaimed]

The power supply is less than a year old and doesn't have any of these issues when using an R9 Fury Crossfire setup, or a GTX 1080. Also, games have load fluctuations (spikes in voltage) due to a lot of changes in GPU utilization compared to a constant load test like OCCT. Running Unigine or OCCT doesn't cause this issue. It happens with games like FFXV and PUBG.

Here are the total system power consumption for the PC for the various tests I've done. All games tested are at 1440p with freesync enabled.

FFXV 60fps cap -> 430W

FFXV 120fps      -> 610W

FFXV 30fps cap -> 270W

PUBG Ultra 120Hz refresh -> 600W 80fps average

FFXIV 120fps cap -> 600W

FFXIV 60fps cap   -> 550W

BF1 60fps cap      -> 500W

BF1 120fps cap    -> 580W

Idle desktop 60Hz -> 113W

Idle desktop 120Hz -> 115W

Idle desktop 144Hz -> 140W

Unigine Valley    -> 515W   1440p Ultra 48fps average

Unigine Heaven -> 510W   1440p Ultra 61fps average

[theacclaimed · Accepted solution]

Found this forum post http://www.jonnyguru.com/forums/showthread.php?t=15653​ over at jonnyguru talking about RX Vega 64 and my Seasonic PSU going into OCP/OPP because of Vega 64's transient spikes. Apparently total current spikes can exceed 85A which would cause the 1000w seasonic to trip OPP. If so, that's insane and it means that custom cooled Vega 64s and the Liquid cooled version should recommend 1200w units instead of AMD's current recommendation of 1000w.

[theacclaimed]

Changed to a Corsair HX1200 psu and that seems to have resolved the issue.

[Hilani_Ahmad]

I know it has been over 2 years,but did you put your hx 1200 into single rail or multi rail becuase I have the same vega 64 and hx 1200 psu and I get the same issue,I have it multi rail,should I put it on single rail?Thanks

[theacclaimed1]

Mine is in multi rail but mine might be older than your HX1200. You can try single rail to see if that helps.