Will my 750w psu provide enough headroom?

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Phaaze88

Phaaze88

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Just want to be sure, since I'm getting inconsistent results between different psu calculators.
Build is in sig, but just in case:
cpu: 7820x @ 4.5, uncore - 3.0, ~1.27v
cooler: NH-D15S in dual fan mode
ram: 16GB @ 2666
gpu: 1080ti - core+100, mem+150
storage: 180GB & 1TB SSDs, 1TB HDD
optical drive: 1x combo
monitors: 1x 27in 1440p, 1x 24in 1080p
case: phantom 820, 4x 200mm & 4x 140mm fans
psu: Seasonic Prime 750w

I also plan to add another ssd to this in the near future.
Can my current psu reliably handle this setup, or would I need something a little bigger?
 
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R
I might of been a little low on that assumption, I skimmed past your build too quick.

On a gaming load, that CPU draws ~80w. Source.
At a very high gaming load the gpu draws 300w when OCed.. Source.
Say each fan consumes max 5w. 5 * 10 = 50w.
Drives + ram + OD is likely 50w together.
That's 480w total, though this is looking at an intense situation. The system would likely use 400 - 450w at a regular gaming load.

650w is fine, so is 750w.
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R_1

R_1

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my back of eyelid caculations show you are fine.
there is no way your CPU Drives and other parts will use 400W that is assuming 350W for the GPU which is a very high estimate.
140W CPU estimate 190 overclocked
250W for CPU estimate 350W overclocked
leaving 210W for the rest of system.
you should be fine
 
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Phaaze88

Phaaze88

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Really, only THAT much? Would you say that the psu I got was overkill? Would a 650w have worked as well?
Then again the 1080ti's minimum requirement is a 600w psu, and skylake-x is a power hungry chip when OC'd... but that's why I asked here to be sure.
The reason I got the 750w in the first place was due to those blasted calculators... so those things just over-complicate matters.
 
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R

Rexper

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I might of been a little low on that assumption, I skimmed past your build too quick.

On a gaming load, that CPU draws ~80w. Source.
At a very high gaming load the gpu draws 300w when OCed.. Source.
Say each fan consumes max 5w. 5 * 10 = 50w.
Drives + ram + OD is likely 50w together.
That's 480w total, though this is looking at an intense situation. The system would likely use 400 - 450w at a regular gaming load.

650w is fine, so is 750w.
 
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