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Graphics Cards

Journeyman III

Vega 64 crashes and restart system

I see posts related to this from about a year ago, but there was no definitive answer.  While playing overwatch I see temperatures go up around 85C, which it will stay at for a while, and then the my system goes black and restarts.  In Overwatch I have the settings to Epic.  I found if I lower the setting to Ultra, it still crashes, but at High it's stable.  I did not pay a  bunch of cash for a high end card I need to nerf to not crash.

I have tried a few things like changing the fan to go max at 70C, and also did 2 different cables from power supply I heard about.  I also saw something about bios safety settings maybe being the issue.  Haven't messed with that though as I don't want to adjust safety setting unless this is the definitive answer.  I thought of returning the card for a replacement, but I have a feeling I'll get same issues.  Please Help!

Windows 10 x64

Ryzen 5 2600 CPU

MSI B450 Tomahawk (MS-7C02) MB

SAPPHIRE Radeon RX Vega 64

Power supply 750W

Corsair Vengeance LPX 16GB

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