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    Question Reliable PSU Recommendation - i9-9900KS

    Hello


    I need your advice for a stable, RELIABLE PSU that can operate for an estimated 3 years 24/7 powering an i9-9900KS @ 5.0GHz.


    It will be powering a server that has bursts of CPU and disk load regularly every 20-30 minutes between +-05:00 - 22:00. (It has to have eight cores and the highest reasonable stable frequency.) It will be in an airconditioned server room. From my reseach, the CPU tops out at drawing about 250-ish watts when pushed.


    I am in South Africa. I am busy getting quotes from online shops like https://www.rebeltech.co.za/63-475w-600w and also Dell South Africa directly.


    Rest of the potential system so far:
    Case: TBD/ NZXT S340 Elite / Cooler Master MasterCase H500P
    PSU: What I'm asking you. :-)
    Motherboard: TBD
    CPU: i9-9900KS
    RAM: Kingston HyperX FURY HX434C16FB3K4/64, 64GB (4x 16GB)
    Cooler: NOCTUA NH-D15
    Thermal Paste: Thermal Grizzly Kryonaut
    Drive 0: Samsung MZ-76E500BW 860 EVO SATA III 2.5 inch 500GB
    Drive 1: Samsung 970 EVO Plus NVMe M.2 1TB
    GPU: SAPPHIRE Radeon R5 230, 1GB, DDR3


    Again, the stability of the system is of utmost importance.


    Thank you

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    Two topmost listings there, Corsair RMx and Cooler Master V-Gold, probably overkill for the PC with such low-load dGPU but nothing more robust there.

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    Quote Originally Posted by Juular View Post
    Two topmost listings there, Corsair RMx and Cooler Master V-Gold, probably overkill for the PC with such low-load dGPU but nothing more robust there.

    FSP-HYDRO-MX550

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    Quote Originally Posted by And_corp View Post
    FSP-HYDRO-MX550
    No reviews on it, looking at specs sheet it's probably double-forward at least but strangely enough they don't list UVP and OTP, so no, it's not the same level. But looking there again, i see CM VSM (Vanguard) for the same price and way cheaper than those two options i've mentioned above, it would be perfect option.

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    Quote Originally Posted by Juular View Post
    No reviews on it, looking at specs sheet it's probably double-forward at least but strangely enough they don't list UVP and OTP, so no, it's not the same level. But looking there again, i see CM VSM (Vanguard) for the same price and way cheaper than those two options i've mentioned above, it would be perfect option.
    Send question

    https://www.fsp-group.com/en/TechnicalSupport.html

    P.S. Do you speak russian?
    Last edited by And_corp; 02-17-2020 at 08:23 AM.

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    Quote Originally Posted by And_corp View Post
    Send question
    About UVP & OTP ? That wouldn't change the fact that there are no reviews, you can't blindly say that it's good or bad without any realworld data, it would be possible to somewhat estimate how it would perform if we knew that this same platform were used in other PSUs but i can't find any info on that, FSP PSUs lineup are complete mess. And admittedly i'm not very good at PSU internals either.

    Quote Originally Posted by And_corp View Post
    P.S. Do you speak russian?
    Да.

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    Quote Originally Posted by Jon Gerow View Post
    Well... To be fair, Intel lets you implement OPP in lieu of OCP, so saying it's "ATX 2.31" doesn't mean anything.

    Still would be good to know what supervisor IC is used. They typically use the P113A, which does not have OCP. That would be a dead give away that they're using OPP.

    As for OTP: Just about any PSU with a thermally controlled fan has OTP. It's pretty simple to have the circuit trip the PWM controller if the fan controller feels that a max RPM is required.
    Where "Intel lets you implement OPP in lieu of OCP" its written?
    I couldn't find OPP.
    https://www.intel.com/content/dam/ww...guide-june.pdf

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    Quote Originally Posted by none77 View Post
    Where "Intel lets you implement OPP in lieu of OCP" its written?
    I couldn't find OPP.
    https://www.intel.com/content/dam/ww...guide-june.pdf
    It's not "written". It's just fact.

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    Trump rules.

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    Bottom line is IF Intel tests your PSU for "compatibility" (see: https://www.intel.com/content/www/us...-selector.html), they're not going to do a dissection and figure out what ICs you're using. They're just going to test it on an ATE to see if it meets documented criteria. And since a Chroma can't tell the difference between OCP and OPP, it doesn't matter which one you use if you're going to call yourself "ATX12V 2.31 compatible".
    Last edited by Jon Gerow; 02-19-2020 at 02:49 PM.

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