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Thread: Instant black screen on OCCT power test. Possibly a PSU failure?

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    Quote Originally Posted by adamsleath View Post
    i want to try this stuff: but havent yet:
    https://www.supercheapauto.com.au/p/...E&gclsrc=aw.ds
    but im worried it will damage the board...?

    $13 seems like a lot of money to me.

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    A group-regulated low end 650W powering a Vega GPU and a Matisse CPU is being pushed to its limit.

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    Quote Originally Posted by Travis View Post
    A group-regulated low end 650W powering a Vega GPU and a Matisse CPU is being pushed to its limit.
    That's my train of thought, but nobody wants to agree with me.

    Hopefully OP borrowed the 850W and the problem went away. But we haven't heard from him.

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    Sorry for late reply. A quick update.

    Got a silverstone sx650-g this morning. Almost two weeks after my order was placed.
    No black screen in OCCT power test, even if the gpu is left at default (no undervolt). With the old PSU, I still get instant black screen if no maunal downvolting to GPU is applied.

    One thing bothers me though, is that the fan of the PSU seems to produce some kinda 'clicking' noise. I'm not sure how to properly describe it. It's kinda like an old fan without enough grease.
    Here is a short video. The louder noise in the background is from the GPU and CPU fans. I think Jon tested this unit before. Is it normal?
    Probably if I really install the PSU into my case, I won't here the noise any more. I don't know.
    Last edited by Qualcomm; 05-20-2020 at 11:16 PM.

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    Quote Originally Posted by Jon Gerow View Post
    That's my train of thought, but nobody wants to agree with me.

    Hopefully OP borrowed the 850W and the problem went away. But we haven't heard from him.
    His damn PSU is inside a pre-built. All the cables are tied up everywhere (you know the pre-built style), so we decided not to deal with all the zip ties at all.

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    Quote Originally Posted by Travis View Post
    A group-regulated low end 650W powering a Vega GPU and a Matisse CPU is being pushed to its limit.
    This should be the problem, but I only got rid of my 5820K last December. There wasn't such an issue before. The peak power of 5820K from hwinfo almost doblues that of the 3800x, like 200W vs 100W, so the problem should have shown up. (ofc I could be wrong.)
    I guess the PSU somehow quickly degraded a lot recently?

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    Quote Originally Posted by Qualcomm View Post
    This should be the problem, but I only got rid of my 5820K last December. There wasn't such an issue before. The peak power of 5820K from hwinfo almost doblues that of the 3800x, like 200W vs 100W, so the problem should have shown up. (ofc I could be wrong.)
    I guess the PSU somehow quickly degraded a lot recently?
    No. It's that the PSU is old, cheap garbage and shouldn't be used with a Vega 56 graphics card.

    The PSU uses an old topology that can't handle the transient spikes of power required by this particular graphics card.

    Surprised the problem didn't pop up as soon as you got the Vega card, but it could be the Vega card was slowly killing the PSU.

    The PSU you got to replace it is far better quality.

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    Quote Originally Posted by Jon Gerow View Post
    No. It's that the PSU is old, cheap garbage and shouldn't be used with a Vega 56 graphics card.

    The PSU uses an old topology that can't handle the transient spikes of power required by this particular graphics card.

    Surprised the problem didn't pop up as soon as you got the Vega card, but it could be the Vega card was slowly killing the PSU.

    The PSU you got to replace it is far better quality.
    Yep. I checked your review before placing the order. Stacked Discover with 20% off, around $100 after tax. Not a bad price for a new unit.
    How about the noise? Is it normal? I don't think I will ever hear it once it's inside my case. Just wonder.

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    Quote Originally Posted by Qualcomm View Post
    Yep. I checked your review before placing the order. Stacked Discover with 20% off, around $100 after tax. Not a bad price for a new unit.
    How about the noise? Is it normal? I don't think I will ever hear it once it's inside my case. Just wonder.
    I didn't hear the noise.

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