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Thread: Is my 750w my achilles heel in my build?

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    Default Is my 750w my achilles heel in my build?

    Hi guys, I have spent 2 days trying to get more clever when it comes to what PSU I need for my build and its a bit overwhelming and confusing - so I am now asking for some wisdom here.

    I currently use Corsair HX750 platinum for my build. Im interested in overclocking both CPU and GPU, at the moment I have only OCd CPU and for different reasons I am thinking that my system needs more power as I get BSOD when I am tryíng to step into the 5000 GHz world with my 9900K. I cant figure out exactly why, but I started googling if PSU could be an achilles heel in my setup and according to some people/calculators it seems so, and to some it seems fine. I have been lucky enough to get an EVGA RTX 2080Ti FTW3 ULTRA HYBRID for free (currently using ZOTAC RTX 2080Ti AMP) - and this makes me even more worried that my PSU wattage wont be enough, with the added pump, and high factory clock on the EVGA card. I have a lot of fans as I am working with aerodynamics and I just find it interesting with airflows , so please consider that aswell.

    I will try to give you the best idea of my build and usage:

    GPU: EVGA RTX 2080Ti FTW3 ULTRA GAMING HYBRID

    CPU: i9-9900K

    AIO Cooling: NZXT Kraken x72

    SSD: 2 x Samsung 970 PRO M.2 2280 512GB PCIe

    Motherboard: ASUS ROG Maximus XI Hero Z390 Gaming Motherboard LGA1151 Wi-Fi

    Memory: CORSAIR Vengeance LPX 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 3200

    PSU: CORSAIR HX Series HX750 CP-9020137-NA 750W ATX12V v2.4

    Fans:
    6 x 120 mm fans for AIO CPU radiator
    2 x 120 mm fans for GPU radiator
    5 x 140 mm case fans

    Monitors: 3 x 27 inch monitors + 1 x 49 inch

    Keyboard: 2 x

    Mouse: 2x

    Other USB: I am using all my 9 USB ports as I am using my computer for both office, gaming and racing simulator


    Thankful for any wisdom regarding this, and also advice of what PSU you would recommend if I need an upgrade.
    Last edited by adam_1991; 04-06-2020 at 12:05 PM.

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    Default

    It's not the PSU. If the PSU wasn't able to deliver enough the Over Power Protection will kick in and the PC turns off.

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    Quote Originally Posted by -The_Mask- View Post
    It's not the PSU. If the PSU wasn't able to deliver enough the Over Power Protection will kick in and the PC turns off.
    I cant say for sure, but I believe that has happened at some point (without BSOD)

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    That shouldn't happen. Are you using two EPS cables to power the CPU and two PEG cables to power the graphics card?

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    Quote Originally Posted by adam_1991 View Post
    I get BSOD when I am tryíng to step into the 5000 GHz world with my 9900K.
    You are overclocking?
    Last edited by ashiekh; 04-06-2020 at 07:09 PM.

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    There's no such thing as 'system needs more power', or rather if anything, it's not about PSU at all. If it works then there are enough power, and if there are BSODs it just means that your components are unstable at frequencies you're trying to feed them with. You got unlucky, your CPU can't work at 5GHz all core, try to lower AVX multiplier or raise vCore.

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    Quote Originally Posted by adam_1991 View Post
    as I get BSOD when I am tryíng to step into the 5000 GHz world with my 9900K.
    There's your problem. The BSODs or random restarts/shut downs are likely caused by an unstable overclock. If it's unstable you either need to increase the CPU voltage or lower the clock speed.

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