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PSU for my Vega 64

Discussion in 'Power Supplies' started by DEL 707, Dec 3, 2018.

  1. DEL 707

    Mobster

    Joined: Mar 20, 2004

    Posts: 3,080

    I built this PC last month.

    Ryzen 7 Eight Core 2700X 4.35GHz (Socket AM4) Processor
    Samsung SSD 850 Evo 1TB
    Toshiba 2TB P300 7200RPM Performance Hard Drive (HDWD120UZSVA)
    MSI Optix G24C 24" 1920x1080 VA FREESYNC 144Hz 1ms Curved Widescreen Gaming Monitor
    OcUK Value Blu-ray / DVDRW combi SATA
    Phanteks Enthoo Pro M Glass Midi Tower Case
    Bitfenix Formula Series 750W 80 Plus Gold Power Supply
    Alpenfohn Ben Nevis Advanced CPU Cooler - 130mm
    Gigabyte Aorus RGB 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual/Quad Channel Kit
    Gigabyte Radeon RX VEGA 64 WindForce OC 8GB HBM2 PCI-Express Graphics Card
    Gigabyte Aorus GA-AX370-Gaming K7 AMD X370 (Socket AM4) DDR4 ATX Motherboard

    I've been having troubles with loss of display, I've asked OCUK support and they suggest the problem could be the PSU.

    Can anyone recommend a PSU to replace my Bitfenix 750W?
     
  2. EsaT

    Mobster

    Joined: Jun 6, 2008

    Posts: 4,481

    Location: Finland

    You mean picture disappers, but not PC shutting down?
    When does that happen? Under heavy load or also in lighter load?
    Have you checked Event Viewer for any errors in there for the moment of problem?
    Have you tried using Power Save profile for card to see if there's any difference?

    Bitfenix Formula certainly isn't bad PSU.
    Though it has current limited wire groups and card could be causing current spikes triggering protections.
    But that would shut down PSU and whole PC.
     
  3. DEL 707

    Mobster

    Joined: Mar 20, 2004

    Posts: 3,080

    It used to shut down the PC, but that was when I was running the graphics card off a single line, rather then 2.
    At the moment the machine keeps working after loss of picture. Sometimes the picture will come back, other times I need to restart the machine.
     
  4. EsaT

    Mobster

    Joined: Jun 6, 2008

    Posts: 4,481

    Location: Finland

    That was card likely triggering limit of single current limiter.
    Nothing weird or bad PSU in that.
    It's simply designed that way.

    But picture disappearing without PC shutting down might also hint to some kind crashing of GPU/driver.
    If you remember time such thing happened Event Viewer could give hints.
    Also switching to Power Save profile would be one thing to try, just to see if there's any change in behaviour.
    Card might even be factory clocked too high for complete stability.
     
  5. DEL 707

    Mobster

    Joined: Mar 20, 2004

    Posts: 3,080

    Sorry, can't remember what time it happened, and I'm not show what Power Save profile is.

    I was talking to some people about this when it started happening. I've increased power limit and lowered the voltage to the GPU and memory.
    I'm talking the tech support at OCUK and they still reckon it could be my PSU.

    Would this be up to the job?
    https://www.overclockers.co.uk/evga...plus-gold-modular-power-supply-ca-03j-ea.html