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Thread: Best 500/600W semi passive PSU?

  1. #11
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    The Seasonic Prime Ultra Platinum 550W is just a Focus Platinum 550W with some minor chances and to years longer warranty. The fan is afaik not changed, the price difference is mostly because you pay extra for the two years extra warranty. Anyhow a Corsair RM550x or be quiet! Straight Power 11 550W are both better power supplies and also more silent.

  2. The Following User Says Thank You to -The_Mask- For This Useful Post:

    Ansem1 (07-04-2019)

  3. #12
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    Thanks a lot! I thought that the Prime had better components than Focus.
    I didn't expect the corsair and be quiet to be better psu, considering that the seasonic si a 80+ Platinum and not Gold.

  4. #13
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    Quote Originally Posted by Ansem1 View Post
    a 80+ Platinum and not Gold.
    Platinum or Gold doesn't matter much, its often the same with minor tweeks to get 1-2% higher efficiency needed for Platinum.

    Good Gold units are already half way there (or more).
    Wich looks something like this:
    https://www.tweakpc.de/hardware/test...wer_11/s03.php

    In 230VAC the Straight Power 11/750W only fails the 80plus Platinum/230VAC Spec by 0,8% Points....
    In 115VAC its not much more with only 0,5% at 50% and 0,8% at 100% Load...

    Though good Platinum are also far better than Spec as well.

  5. #14
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    Hi everyone,
    I changed a little my configuration: 3900x and 5700XT, so I was thinking about a 650W PSU.
    This are my 3 main choises:
    Corsair RM650x ->100
    Be quiet Straight power 11 650 ->100
    Seasonic Focus Plus Platinum -> 115

    Like at the beginning of the post: I want a really quiet PSU. The Corsair and Seasonic are passive until 300W, so I'm fine since while gaming I use headphone or loud speackers.
    Is the Seasonic better than the Corsair and be quiet? Or the other two are good enough?

  6. #15
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    I don't see why that should need 650W...
    And the 650W Straight Power I don't like because of the Connector Board. The 750W is a better choice, even if its a bit more expensive...
    I had a 5700XT for a while and it was around 350W or so max. Way less than VEGA. And OC isn't viable with the Stock heatsink.


    If you want a really quiet PSU, scrap the Seasonic they aren't that quiet and, by todays standards, on the louder side.

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    350W max+cpu max+ other things can be 500W, So I would rather go for a 650 thank a 550.

    What's the problem with the straight power connector board on the 650W model?

  8. #17
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    Quote Originally Posted by Ansem1 View Post
    350W max+cpu max+ other things can be 500W, So I would rather go for a 650 thank a 550.
    What other things???
    The 5700X is rather limited and not a 350W GPU, that would be VEGA64, with VEGA64 and +50% Powerlimit you might get in the direction of 550W.

    You really underestimate how much 550W really is!

    Quote Originally Posted by Ansem1 View Post
    What's the problem with the straight power connector board on the 650W model?
    Only one CPU Connector and 2 12pin PCIe Connectors, 3 Peripherials.

    The 750W has Two CPU Connectors, 3 PCIe (12pin, so 6 max) and 4 Peripherial Connectors.


    All PSU Side.

  9. #18
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    why should I need two CPU Connector? O_O

  10. #19
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    Quote Originally Posted by Ansem1 View Post
    why should I need two CPU Connector? O_O
    Because your board comes with two (or 8+4 pin)
    For example.

  11. #20
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    https://www.techspot.com/review/1883...adeon-rx-5700/
    5700XT becomes quite inefficient, when sufficiently overclocked.
    R7 1700x @3,95
    Geil EVO x 16gb ddr4 3200
    Asus Prime x370 pro
    Vega 64
    500GB Samsung 970 pro
    Corsair RM1000i
    EKWB watercooling (cpu+gpu)

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