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Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports?

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acebb6
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Monday, October 12, 2020 2:22 AM (permalink)
My EVGA 650W G2 only has 2 VGA ports. I know its best to have a single cable going to the 3080FTW with 3 x 8 pins.
 
My system:
6600k stock
Asus Z170A mobo
Enermax basic air cooler
16gb corsair vengeance 3000mhz ram
2 Sata SSDs
1 HDD
 
Thank you.
post edited by acebb6 - Monday, October 12, 2020 2:24 AM
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    jankerson
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Monday, October 12, 2020 2:49 AM (permalink)
    acebb6
    My EVGA 650W G2 only has 2 VGA ports. I know its best to have a single cable going to the 3080FTW with 3 x 8 pins.
     
    My system:
    6600k stock
    Asus Z170A mobo
    Enermax basic air cooler
    16gb corsair vengeance 3000mhz ram
    2 Sata SSDs
    1 HDD
     
    Thank you.




    You really need a new PSU, 750W or better for the FTW3.
     
    But, you can run the 2 cables and use 3 connections.
     
    Each PCIe cable has 2 connections, use 1 with 2 connections and the other with one.
     
    It's actually best to run 3 separate cables, but you can use 2 of them with 3 connections total.

    i9 9900K @ 5.0 GHz, NH D15, 32 GB GSKILL Trident Z RGB, AORUS Z390 MASTER, EVGA RTX 3080 FTW3 Ultra, Samsung 970 EVO Plus 500GB, Samsung 860 EVO 1TB, Samsung 860 EVO 500GB, ASUS ROG Swift PG279Q, Steel Series APEX PRO, Logitech Gaming Pro Mouse, CM Master Case 5, Corsair AXI 1600W.
     
    i7 8086K, AORUS Z370 Gaming 5, 16GB GSKILL RJV 3200, EVGA 2080TI FTW3 Ultra, Samsung 970 EVO 250GB, (2)SAMSUNG 860 EVO 500 GB, Acer Predator XB1 XB271HU, Corsair HXI 850W.
     
    i7 8700K, AORUS Z370 Ultra Gaming, 16GB 16GB DDR4 3000, EVGA 1080Ti FTW3 Ultra, Samsung 960 EVO 250GB, Corsair HX 850W.
    #2
    acebb6
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Monday, October 12, 2020 2:51 AM (permalink)
    Thank you kind stranger. I appreciate it.
    #3
    jankerson
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Monday, October 12, 2020 2:57 AM (permalink)
    acebb6
    Thank you kind stranger. I appreciate it.



     
    Just keep an eye on the PSU, it is a good one, a really good one so you might be OK.
     
    But if it gets loud or you have issues then go ahead and get a new 750W or more.

    i9 9900K @ 5.0 GHz, NH D15, 32 GB GSKILL Trident Z RGB, AORUS Z390 MASTER, EVGA RTX 3080 FTW3 Ultra, Samsung 970 EVO Plus 500GB, Samsung 860 EVO 1TB, Samsung 860 EVO 500GB, ASUS ROG Swift PG279Q, Steel Series APEX PRO, Logitech Gaming Pro Mouse, CM Master Case 5, Corsair AXI 1600W.
     
    i7 8086K, AORUS Z370 Gaming 5, 16GB GSKILL RJV 3200, EVGA 2080TI FTW3 Ultra, Samsung 970 EVO 250GB, (2)SAMSUNG 860 EVO 500 GB, Acer Predator XB1 XB271HU, Corsair HXI 850W.
     
    i7 8700K, AORUS Z370 Ultra Gaming, 16GB 16GB DDR4 3000, EVGA 1080Ti FTW3 Ultra, Samsung 960 EVO 250GB, Corsair HX 850W.
    #4
    The_Jack_Hammer
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 12:30 AM (permalink)
    I know this is an old thread, but there was not a follow up to confirm it worked. So for those looking here is my situation and findings. The short answer is that the system would hard reset under full load. I could replicate this running a furmark test, and solve it by backing off the power with the x1 software. The interesting thing is from the wall I would never draw more than 500w based off the lcd on my ups. Regardless I replaced with a 750w PSU and the problems went away. I don't quite understand why it was a problem, but it definitely was. I'm fairly confident its not a PSU problem as it ran my 3060ti with no troubles at all. Hopes this helps someone looking. 
     
    MSI Board
    i7-4700k
    16GB RAM
    1x m-sata hdd
    1 x 2.5" SSD
    3 x led case fans
    corsair cpu liquid cooler
    EVGA 3080 ftw3 ultra
    EVGA 650wg2
     
     
     
    #5
    rblaes_99
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 1:46 PM (permalink)
    why do people do this?  $900 video card on a $60 power supply SMH.  why? 


    #6
    Trackseven75
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 7:36 PM (permalink)
    Same people who buy a $2000 bike and put a $20 lock on it.LoL
    #7
    KingEngineRevUp
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 8:48 PM (permalink)
    This thread was almost 1 year old... Why bump it? 
    #8
    The_Jack_Hammer
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 8:49 PM (permalink)
    In my case the upgrade started with a 3060ti, and then I had an opportunity to upgrade to a 3080 @ MSRP. While the 750 was recommended as the minimum I couldn't quite understand why. My thought process was to allow for additional items such as disk drives and what not, which I didn't have. The total power draw of the cpu and gpu was well under 650 so in theory it should have been fine. Had I been building the system from the ground up I wouldn't skimp on the PSU. I ended up slapping in a Seasonic 750 Platinum, problem solved.
     
    I understand just follow the recommendations, and why waste the time with a cheap PSU on an $900 video card... but does anyone have an explanation of why it doesn't work properly? In the end the new 750W PSU has never drawn more that 550W @ the wall outlet and everything is working great. Shouldn't the 650 be able to do the same? 
    #9
    The_Jack_Hammer
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 8:52 PM (permalink)
    There was not an answer to the question, only suggestions. I had the exact same situation with a confirmed answer. When searching for my problem this thread came up multiple times. I thought providing a confirmed answer to the question would be helpful for others. 
    #10
    tmpman123
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 8:59 PM (permalink)
    Your power supply 650w should be more than enough to handle the 3080 FTW3 Ultra.  You could buy a 8pin split to dual 8pin VGA connector cable and plug it into your 3080 FTW3 Ultra.  I ran a 3080 FTW3 Ultra on a 5900x with a 650w EVGA P2 power supply and I have 0 issues with it in terms of stability.  My CPU is also overclocked as well. 

    Ryzen 5900X o/c 4750 CCX0 / 4625 CCX1 at 1.312v
    BeQuiet Dark Rock Pro4 with front 120mm Nidec Gentle Typhoon 1850RPM fan mod with Thermal Grizzly Kryonaut Paste
    Asus Strix-E B550 Motherboard
    4x8GB GSKILL DDR4 3200C14 RAM o/c 3600/FCLK 1800 15-15-15-35-1T 1.4v
    128GB Samsung PM961 SSD / 256GB Team Group NVME SSD / 3.84TB Samsung PM862 SATA SSD for storage
    MSI Trio 3080TI undervolt 1905/21000 at 0.868v
    EVGA P2 650W Power Supply 80 Plus Platinum
    DVDRW SATA
    Phanteks Entho Pro M Case with 2x 140mm Rosewill Hyperborea Intake Fan / 1x 140mm Rosewill Hyperborea Exhaust fan
    #11
    KingEngineRevUp
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Thursday, July 08, 2021 9:08 PM (permalink)
    The_Jack_Hammer
    There was not an answer to the question, only suggestions. I had the exact same situation with a confirmed answer. When searching for my problem this thread came up multiple times. I thought providing a confirmed answer to the question would be helpful for others. 


     
    Everyone's system is configured differently so there's no one size fits all kind of answer here. PSU efficiency, CPU (OC or not OC), several RGB peripherals, etc. 
     
    tmpman123
    Your power supply 650w should be more than enough to handle the 3080 FTW3 Ultra.  You could buy a 8pin split to dual 8pin VGA connector cable and plug it into your 3080 FTW3 Ultra.  I ran a 3080 FTW3 Ultra on a 5900x with a 650w EVGA P2 power supply and I have 0 issues with it in terms of stability.  My CPU is also overclocked as well. 




    If your PSU didn't come with a daisy chain, I would consult with the PSU manufacturer as a safety precaution. 
     
    If your PSU came with one, by all means use it but only for two pins if one dedicated issued in a 3 pin arrangement. It should be fine. 
     
    For a FTW3, us it on Pins 1 and 3 as they produce the lest load. The middle consumes the most load. 
    post edited by KingEngineRevUp - Thursday, July 08, 2021 9:12 PM
    #12
    jaro_irl
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    Re: Can a 3080 FTW run off a 650W EVGA G2 PSU with only 2 VGA ports? Wednesday, July 14, 2021 10:15 AM (permalink)
    The psu will struggle significantly, upgrade is recommended
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