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Thread: Quality PSU for workstation without dedicated GPU

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    Lightbulb Quality PSU for workstation without dedicated GPU

    Dear forum,
    I am about the pick a new PSU for a desktop/workstation build, and would like something of good quality that is silent and super stable for years to come. I don't game, and plan to use the integrated graphics. The heavy lifting for the machine will mainly be compiling (software development), and sometimes to sandbox different environments in virtual machines. The components:

    Motherboard: Supermicro X11SCA-F
    CPU: Intel Xeon E-2226G (6c6t) 3.4 GHz 80 TDP w. NH-L12 cooler.
    A couple of case fans. Maybe an optical unit.
    Memory: 16 GB ECC memory (maybe more in the future)
    Storage: 512 GB nvme SSD + some hard drive.
    Different external USB devices.

    Seasonic's wattage calculator arrives to a load wattage of 258 W and recommends a 308 W PSU. All better quality PSU's have higher wattage than what I need.

    I really enjoy reading the posts and experience on this forum, but have come to the point where I feel that I know less than when I started. So I'll list a couple of units that I am looking at, and am open to your suggestions (maybe I am missing something interesting).

    - Seasonic Focus GX - 550W [€95,50 varle.lt]
    - Be Quiet! Straight Power 11 450W [€96,79 varle.lt]
    - Corsair RM550x 80 PLUS Gold [€105,32 varle.lt]

    I am in Lithuania, and my budget for the PSU is about €100. I shop varle.lt, kilobaitas.lt, skytech.lt.

    My preference is for 1) stability 2) silence 3) durability
    I'm good with 80+ gold efficiency, and don't want any bling. I am not in a super hurry ether, really.
    I do appreciate good engineering, and like to favour honest manufacturers. I have looked at different tier-lists, but I tend to confuse things after a while.

    Hope you are finding my case is somewhat interesting...

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    Reading through the PSU tier list again, I’m inclined to think that all my alternatives might be equally good for my purpose, and that is hard to go wrong with a €100 budget, for the capacity I need.

    Quote Originally Posted by JonasA View Post
    - Seasonic Focus GX - 550W [€95,50 varle.lt]
    - Be Quiet! Straight Power 11 450W [€96,79 varle.lt]
    - Corsair RM550x 80 PLUS Gold [€105,32 varle.lt]
    Still it would be interesting, from a technical perspective, if the units I am looking at are built the same, or ‘might’ perform differently in any way regarding longevity, dependability or sound. I may add in a sinewave UPS between the socket and the PSU too.

    I have been super satisfied with my last build, that has been tugging along 24/7 without a hickup since 2011: Supermicro X9SCM, Xeon E3-1220 3.1GHz, 24 GB ECC RAM, disks, Corsair Hx 750W PSU, Cyberpower CP1500 (UPS added later).

    I suppose I just got a bit cautious when I read about that there sometimes are problems, under some circumstances, with some models from known and respected PSU brands. I am aware that one can always be unlucky, and that is what warranty is for. Just to minimise that probability.

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    If you don't plan on adding dGPU and just want smth quiet and relatively reliable then you can get be quiet! System Power 9 for like half the price of those PSUs you mentioned. But if you really okay with buying overkill PSU either of those would do equally fine.

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    The be quiet! System Power 9 isn't a PSU ment for 24/7 workstation use over a lot of years. The be quiet Straight Power 11 is a PSU build for that. The higher efficiency will make up for the higher price over the years.

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