Question Is a Corsair RM750e enough for a 4080 Super and 7800X3D?

[TurboSoggy]

I just bought a 4080 Super and an RM750e PSU based on the 4080’s PSU requirement of 750w. However, now I am seeing people online say you should have at a BARE MINIMUM an 850w PSU for these components and a lot of people seem to strongly recommend 1000w. In a lot of threads people who used a 750w PSU were being called cheap morons. Am I screwed? I have no intentions of upgrading my PC for quite a while so future proofing isn’t a factor for me. I wasn’t trying to be a cheap ass I just figured why get a PSU that’s more than I need.

I ran a 3070 with a 5600X and then a 7800X3D on a 650w PSU and never had an issues despite people saying that should need 750w bare minimum so I don’t know.

 

[Bob.B]

I just bought a 4080 Super and an RM750e PSU based on the 4080’s PSU requirement of 750w. However, now I am seeing people online say you should have at a BARE MINIMUM an 850w PSU for these components and a lot of people seem to strongly recommend 1000w. In a lot of threads people who used a 750w PSU were being called cheap morons. Am I screwed? I have no intentions of upgrading my PC for quite a while so future proofing isn’t a factor for me. I wasn’t trying to be a cheap ass I just figured why get a PSU that’s more than I need.

I ran a 3070 with a 5600X and then a 7800X3D on a 650w PSU and never had an issues despite people saying that should need 750w bare minimum so I don’t know.

750w is the minimum recco but with a lower power cpu.
You can certainly try it but your not leaving yourself any headroom.

 

[beyondlogic]

I just bought a 4080 Super and an RM750e PSU based on the 4080’s PSU requirement of 750w. However, now I am seeing people online say you should have at a BARE MINIMUM an 850w PSU for these components and a lot of people seem to strongly recommend 1000w. In a lot of threads people who used a 750w PSU were being called cheap morons. Am I screwed? I have no intentions of upgrading my PC for quite a while so future proofing isn’t a factor for me. I wasn’t trying to be a cheap ass I just figured why get a PSU that’s more than I need.

I ran a 3070 with a 5600X and then a 7800X3D on a 650w PSU and never had an issues despite people saying that should need 750w bare minimum so I don’t know.

really cant compare a 3070 with a 4080 super

thats only founder models.

3070 is like 220w swings of 250w
4080 super pulls roughly 302 watts with power swings of 356 watts.

realistic if you find a model by 3rd party model that sits in the 750w envelope you should be fine.

not all 4080 supers will be same in power consumption so remember that when looking up said card.

 

[TurboSoggy]

really cant compare a 3070 with a 4080 super

thats only founder models.

3070 is like 220w swings of 250w
4080 super pulls roughly 302 watts with power swings of 356 watts.

realistic if you find a model by 3rd party model that sits in the 750w envelope you should be fine.

not all 4080 supers will be same in power consumption so remember that when looking up said card.

I never compared them directly. I was saying I used a 3070 with 650 watts when people said I needed 750 and it was fine. Obviously I’m not a dumbass and know the 4080 is more powerful or else I wouldn’t have upgraded

 

[TurboSoggy]

750w is the minimum recco but with a lower power cpu.
You can certainly try it but you’re not leaving yourself any headroom.

I’ve seen plenty of manufacturers have wattage tables where they say 750w is fine so I’m not worried at this point. If my PC starts crashing you have the honor of saying “I told you so.”

I also used a tool by Corsair where they will recommend a PSU and it recommended 750watt PSUs for my components. I figure if they know what their own PSUs can handle

 

[beyondlogic]

I never compared them directly. I was saying I used a 3070 with 650 watts when people said I needed 750 and it was fine.

sounds like you had a bit of odd advise if people said jump to 750w /650w is plenty for a 3070. i would still caution anyone using it but again depends on what the vendor suggests.

 

[TurboSoggy]

sounds like you had a bit of odd advise if people said jump to 750w /650w is plenty for a 3070. i would still caution anyone using it but again depends on what the vendor suggests.

750w is definitely plenty for a 3070. The recommended was 650w which I used the whole time I had a 3070 as it was what came with my NZXT prebuilt (I know, prebuilts suck, yada yada— this was when you couldn’t acquire a 3070 at MSRP anywhere so a prebuilt was the only way I was getting one)

 

[TurboSoggy]

The other thing is it’s a newer PSU and I think they’re made to withstand transient spikes now