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EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not?

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EpicSurvivor
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2020/10/17 09:09:29 (permalink)
So I plan on getting an FTW3 RTX 3080 and wanted to get some input. I have an EVGA SuperNova 750 G2 PSU was wondering if that would be enough or if I would have any issues? The rest of the specs are 9700k (Stock) 16GB RAM, One 2TB HDD and One 1TB SSD. Motherboard AORUS PRO Z390.
 
EDIT: I need to update the signature.
Thanks
 

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    ehabash1
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 09:20:23 (permalink)
    I wouldn't if you plan to overclock at all.
    If stock then you should be fine
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    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 09:26:58 (permalink)
    ehabash1
    I wouldn't if you plan to overclock at all.
    If stock then you should be fine


     I never overclock my CPU or my RAM. I don't think I would overclock the GPU right away either but its something I would probably mess around with in the future. But for now it would just be running stock. Kinda worried to buy the 3080 (When I can find one) and then have to upgrade my PSU as well my budget isn't ready for that lol. But honestly I just want to run it all stock for now.
    post edited by EpicSurvivor - 2020/10/17 09:30:08

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    kring
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 09:32:05 (permalink)
    you are 100% totally fine.   I have similar rig and have a 3090. and when I run the power test in the new version of Precision X1 it says only 702W are max draw and EVGA recommends a 750 Gold or better.  so with a 3080 you are totally fine with a quality 750, and that's even with overclocking.
     
    go ahead and grab PX1 1.1.0.11 and there's a new feature at the top with icon POWER.  run that to confirm
    #4
    ehabash1
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 09:36:06 (permalink)
    can you download gpuz and or HWinfo and check some of your power draw?
    the 9700k is pretty power hungry but stock doesnt pull THAT much. Since there are so many variables like are you watercooling at all? pump needs power. Lots of fans or only a couple?
     
    You should probably be fine but if i were you i wouldnt try messing around with 450watt XOC bios for the 3080. stock bios even if you overclock the gpu i think you will be fine but you should check your current power draw to make sure
    #5
    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 09:50:08 (permalink)
    kring
    you are 100% totally fine.   I have similar rig and have a 3090. and when I run the power test in the new version of Precision X1 it says only 702W are max draw and EVGA recommends a 750 Gold or better.  so with a 3080 you are totally fine with a quality 750, and that's even with overclocking.
     
    go ahead and grab PX1 1.1.0.11 and there's a new feature at the top with icon POWER.  run that to confirm. 


    Awesome! glad to hear I will give it a try when I get my hands on an FTW3 3080. Still waiting. 
    EDIT You meant grab PX1 update now? Oh okay. Going to see if the method below with HWinfo works if the other user can explain where I can find the info on the program.
    ehabash1
    can you download gpuz and or HWinfo and check some of your power draw?
    the 9700k is pretty power hungry but stock doesnt pull THAT much. Since there are so many variables like are you watercooling at all? pump needs power. Lots of fans or only a couple?
     
    You should probably be fine but if i were you i wouldnt try messing around with 450watt XOC bios for the 3080. stock bios even if you overclock the gpu i think you will be fine but you should check your current power draw to make sure


    I am pretty noobish but I use HWmonitor I downloaded HWinfo to post the results but I can't find anywhere on HWinfo I never used it before sorry. And no worries I wouldn't mess with the 450watt OXC bios unless I upgraded my PSU next summer. Can you help me find the info on HWinfo please?
    post edited by EpicSurvivor - 2020/10/17 10:03:04

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    dominic2189
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 11:42:24 (permalink)
    EpicSurvivor
    So I plan on getting an FTW3 RTX 3080 and wanted to get some input. I have an EVGA SuperNova 750 G2 PSU was wondering if that would be enough or if I would have any issues? The rest of the specs are 9700k (Stock) 16GB RAM, One 2TB HDD and One 1TB SSD. Motherboard AORUS PRO Z390.
     
    EDIT: I need to update the signature.
    Thanks
     


    As long as you don't use the 450W BIOS OC, that's fine. They recommended 850W if you updated the BIOS to the 450W, anything else is fine with a 750w.
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    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:08:29 (permalink)
    dominic2189
    EpicSurvivor
    So I plan on getting an FTW3 RTX 3080 and wanted to get some input. I have an EVGA SuperNova 750 G2 PSU was wondering if that would be enough or if I would have any issues? The rest of the specs are 9700k (Stock) 16GB RAM, One 2TB HDD and One 1TB SSD. Motherboard AORUS PRO Z390.
     
    EDIT: I need to update the signature.
    Thanks
     


    As long as you don't use the 450W BIOS OC, that's fine. They recommended 850W if you updated the BIOS to the 450W, anything else is fine with a 750w.

    Okay thank you! hope I can get my hands on an FTW3 3080 soon.

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    #8
    Robob
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:10:38 (permalink)
    I have overclocked CPU and GPU together on 750w with 3090 and I’m running good so far.
    I don’t run optical drives anymore but just have 3 ssd and fans.
    As others stated as long as you don’t load the extreme O/C 450w bios you should be good.

    CPU - Intel i7 10700K @ 5Ghz / 1.29v
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    #9
    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:12:04 (permalink)
    Robob
    I have overclocked CPU and GPU together on 750w with 3090 and I’m running good so far.
    I don’t run optical drives anymore but just have 3 ssd and fans.
    As others stated as long as you don’t load the extreme O/C 450w bios you should be good.


    Awesome! perfect. that's what I like to hear. Appreciate the help!

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    mchang1984
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:31:59 (permalink)
    The best time to buy a PSU would be Black Friday though.
     
    I bought an EVGA 1600W T2 last year for $150 from EVGA during black friday. Best Deal ever.
     
    750W is probably OK, but you can never go wrong with better efficiency with a higher PSU.
    #11
    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:33:06 (permalink)
    mchang1984
    The best time to buy a PSU would be Black Friday though.
     
    I bought an EVGA 1600W T2 last year for $150 from EVGA during black friday. Best Deal ever.
     
    750W is probably OK, but you can never go wrong with better efficiency with a higher PSU.


    I was thinking about that. Black Friday is just a month away. Will see what happens. 

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    kayfabe
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:35:29 (permalink)
    Companies are risk averse and typically would rather overestimate what you need than risk recommending something that won't work. While it's not impossible to need more than 750 watts the saving grace is that for most hobbyists you'd have to be going out of your way with stress tests in order to really max out a 3080 and a power hungry CPU at the same time. With video games in particular you're almost certainly going to hit a point where the workload will be biased towards the GPU or the CPU rather than hitting both ultra hard--nobody wants to lose money by making a game most people couldn't play, after all. This sort of worry is likely more important for professional and perhaps VR applications that I don't really feel qualified to speculate about.
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    mchang1984
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:45:47 (permalink)
    Also just remember that PSU ratings don't mean that the computer will always pull the max rating. That is just the maximum power draw the PSU can provide.
     
    Peak efficiency occurs when a PSU is at 50% of the maximum load / capacity
     
    So for example a 750W PSU is NOT going to pull 750 Watts from the wall 24/7. On a computer it will pull the total sum of all the watts needed to keep the system running and that changes depending on load or work that the computer is doing.
     
    That said, that also means that a 1600 W PSU is also NOT going to pull 1600 Watts from the wall 24/7. But what it can do is provide much better efficiency since your system is using between 500 Watts to 750 Watts of power and 1600W divided by 2 is 800 Watts so that is still much more efficient power conversion than a 750W PSU.
     
    The 1600 Watt PSU might draw 500 Watts to 700 Watts current power draw out of 1600 Watts maximum power available.
     
    So that ends that myth of "Oh dude! You bought a 1600 Watt PSU? Now your computer will use up so much power!"
     
    But the real truth is because of the better efficiency you save about $20-$40 bucks a year on your electricity bill because the converted power is not wasted, more of the power is sent to your components because the conversion is more efficient.
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    EpicSurvivor
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 13:46:41 (permalink)
    Hey Thanks! appreciate all the feedback guys. 
     
     

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    kayfabe
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    Re: EVGA SuperNOVA 750 G2 good enough for EVGA FTW3 3080 or not? 2020/10/17 14:43:29 (permalink)
    mchang1984That said, that also means that a 1600 W PSU is also NOT going to pull 1600 Watts from the wall 24/7. But what it can do is provide much better efficiency since your system is using between 500 Watts to 750 Watts of power and 1600W divided by 2 is 800 Watts so that is still much more efficient power conversion than a 750W PSU.

     
    PSU efficiency curves aren't nearly that dramatic. Efficiency tends to peak at around 50% of max draw, but with any 80plus PSU worth buying the curve is going to be pretty flat at anything resembling a reasonable load. The efficiency gap between a good PSU at 50% load and one at ~85% load will often be around %5. In fact the worst inefficiency gap is typically at extremely low loads, in which case low wattage PSUs tend to win out in efficiency just because they're closer to their 50% sweet spot while idling. So in terms of efficiency gains you're typically going to get a better return on your investment by going up in efficiency rating than wattage rating. Really, the best arguments for going overkill on psu wattage comes down to silence and room for future upgrades--it's not unusual for high watt units to run without fans at low loads and for some builds that'll be cheaper than buying a fully passive unit.
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