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AnsweredEVGA SuperNova G3 650W and rtx 3080

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chickenballs
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2020/09/16 09:10:56 (permalink)
The Nvidia website states that the 3080 requires at least a 750W psu
but according to most reviews the FE card itself draws 320-360W which seems to be similar to oced 1080Ti and 2080Ti
so I am wondering if my 2yr old EVGA Supernova G3 650W psu will be able to handle the new gpu

rest of my build is:
i7 4790K stock with Cryorig H7
MSI z97 Gaming5
3x SATA Samsung ssds
1x nvme ssd
4x4 gb
no rgb
current gpu asus Gtx 1080 Strix OC
 
The main reason I want to get this gpu is I want to play Shadow of the Tomb Raider and Horizon Zero Dawn at 4K (not ultra high fps 1080p)
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    bob16314
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    Re: EVGA SuperNova G3 650W and rtx 3080 2020/09/16 09:36:43 (permalink)
    The OuterVision Power Supply Calculator has been updated to include NVIDIA RTX 3070/3080/3090 video cards, use that to estimate your system wattage need.

    * Corsair Obsidian 450D Mid-Tower - Airflow Edition * ASUS ROG Maximus X Hero (Wi-Fi AC) * Intel i7-8700K @ 5.0 GHz * 16GB G.SKILL Trident Z 4133MHz * Sabrent Rocket 1TB M.2 SSD * WD Black 500 GB HDD * Seasonic M12 II 750W * Corsair H115i Elite Capellix 280mm * EVGA GTX 760 SC * Win7 Home/Win10 Home * 
     
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    chickenballs
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    Re: EVGA SuperNova G3 650W and rtx 3080 2020/09/17 01:04:17 (permalink)
    Thanks for sharing the link
    what I don't understand is that according to that calculator the load wattage will be 577W and yet the recommended psu wattage is only 627W.
    Correct me if I am wrong but wouldn't a hypothetical 627W 80+ psu only supply 627x80%=501W?
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    bob16314
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    Re: EVGA SuperNova G3 650W and rtx 3080 2020/09/17 03:52:04 (permalink) ☼ Best Answerby chickenballs 2020/10/01 11:52:24
    80+ is the Efficiency Rating.

    Will your single 12V rail 650W PSU work? = Almost certainly.

    Would I rush to buy another/stronger PSU? = No, not according to your system wattage estimate.

    You can also use the EVGA Power Meter and see what it says, but the OuterVision Calculator is more detailed/accurate.

    * Corsair Obsidian 450D Mid-Tower - Airflow Edition * ASUS ROG Maximus X Hero (Wi-Fi AC) * Intel i7-8700K @ 5.0 GHz * 16GB G.SKILL Trident Z 4133MHz * Sabrent Rocket 1TB M.2 SSD * WD Black 500 GB HDD * Seasonic M12 II 750W * Corsair H115i Elite Capellix 280mm * EVGA GTX 760 SC * Win7 Home/Win10 Home * 
     
    "Whatever it takes, as long as it works" - Me
     
     
     
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