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MEC-777
MEC-777 MEC-777

Some of what he says (like buy from a good "brand") isn't entirely correct. But this does show that you don't need a billion watt PSU for a high-end gaming system. I remember years ago, another tech channel ran a high-end system (can't remember the specs) on a CX450 and of course, it was totally fine.

 

@LukeSavenije

  1. Sauron

    Sauron

    Yeah, it's not surprising. High quality PSUs tend to come in higher wattage configurations though. Also I wonder if the cpu and gpu are boosting as high as they could be with a bit more power to play with.

  2. TVwazhere

    TVwazhere

    This made me think: what ever happened to GN's testing of PSU's? They were gearing up for it in mid 2018, and we never saw anything come of it. Did they talk about this in an Ask GN?

  3. Juular

    Juular

    power-gaming.png

    https://www.techpowerup.com/review/intel-core-i9-9900ks/17.html

  4. LukeSavenije

    LukeSavenije

    i just feel sorry for the hardware... cm is soon releasing a revision with a fix, but this one did 125mV in testing...

  5. MEC-777

    MEC-777

    @Sauron It doesn't really work like that. As long as the PSU can provide the power needed and stable enough, it won't affect performance of the GPU & PSU. The system was drawing within the limits of that PSU and thus, there [technically] is no issue.

    @LukeSavenije It's fine. The VRMs were doing their job. ;)

    What's also somewhat impressive with this test is he did it with a Tier C 80+ white unit. I think that's a testament to how far PSU quality has come, even on the lower-end. Of course, I wouldn't recommend doing this but it does work and could potentially run for years like this without failing or killing components.

  6. Sauron

    Sauron

    @MEC-777 afaik modern nvidia gpus can "decide" whether they want to boost and by how much depending on their temperature and how much power is available. https://www.geforce.com/hardware/technology/gpu-boost/technology

     

    And I do believe that the cpu's boosting capabilities also partially depend on how much power is available, though I could be wrong there.

  7. LukeSavenije

    LukeSavenije

    Quote

    What's also somewhat impressive with this test is he did it with a Tier C 80+ white unit. I think that's a testament to how far PSU quality has come, even on the lower-end. Of course, I wouldn't recommend doing this but it does work and could potentially run for years like this without failing or killing components.

    if the fix will be like i think it'll be... then this isn't a tier c, but a tier b+

     

    gospower, half bridge llc resonant

  8. MEC-777

    MEC-777

    @Sauron Correct, but it only applies such limitations if it cannot get what it needs to draw for max clocks at the given loads and temps. In this case in this video, the PSU wasn't even quite fully loaded yet. It was drawing about 430w from the wall. Apply the efficiency rating of approx 80%, and the system itself was only drawing about 350w +/-.

  9. Juular

    Juular

    @Sauron the CPU and GPU don't know how much power are 'available' on PSU side, you're confusing with their defined power limits. If PSU can't provide any more power (usually 20-30% up from rated power rating for modern PSUs) it just shuts down, there are no communication between PSU and other components.

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