So, is this statement true, if i had a 850w power supply or a 1300w power supply, on exactly the same pc build, lets say a 13900K and a 4090, just because i bought a 1300w power supply for future needs, will both the 850w and 1300w draw exactly the same electricity when running the same pc build ? i mean i wont be paying for 1300w of electricity compared to just 850w of electric ?, guess this is a stupid question to some, but i dont want to be paying for not needed electric if i dont need to, thx
Power/Electricity question
- Thread starter Daytrader
- Start date
Man of Honour
A psu will only deliver the power asked of it so no a 1300w psu won't be always drawing 1300w (power draw from the wall would me more than 1300w due to efficiency). A psu will draw more power for a given output depending on it's 80+ rating though. A 80+ White (basic) will draw the most from the wall for a given output while a 80+ Titanium will draw the least for the same power output. Personally I draw the line at 80+ Gold as Platinum and Titanium is too much of a price premium that you would never make up in energy savings to justify the outlay.
The answer to your question is more or less the same providing they are both the same 80+ rating.
The answer to your question is more or less the same providing they are both the same 80+ rating.
Ok, thx for the reply, i thought as much, just wanted confirmation thou, cheers
If you want to be reaaaaaally thorough, you can check reviews for the two PSUs you plan to buy and see what the efficiency is like at your intended level of load, but I somewhat doubt that (assuming they're both gold) it will be a number worth bothering with and since it can vary anyway (between samples, runs, test equipment 'n such) it would have to be a significant number to give it any weight at all.
If the PC is run at full load for long periods of time and your electricity is at standard rates, then it can be worth considering the efficiency rating of the PSU, but for a few hours of gaming a day (or less) then it usually isn't.
If the PC is run at full load for long periods of time and your electricity is at standard rates, then it can be worth considering the efficiency rating of the PSU, but for a few hours of gaming a day (or less) then it usually isn't.
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Soldato
Due to the efficiency curve it's usually slightly more efficient to have a PSU closer rated to your usage.
So if your system pulls 400w, you are better off having a 600w PSU over a 1200w PSU.
But there is so little in it, it's really not worth considering. Also different PSUs have different efficiencies so would usually throw that out anyway.
So if your system pulls 400w, you are better off having a 600w PSU over a 1200w PSU.
But there is so little in it, it's really not worth considering. Also different PSUs have different efficiencies so would usually throw that out anyway.
Soldato
You might get different opinions on this but I would get whatever power supply suits your needs for today and not worry about trying to future proof it too much.
EG if you dont have a new graphics cards with whatever 12 pin connector just get a "standard" one for lack of better terminlogy.
I also wouldnt get a much bigger PSU then you need for "just in case" you'll spend more money, unless you have upgrades planned etc.
Yeh ok, what i find weird is, if i do buy a new PS with the 16 pin gpu connector, and use that connector, if i have problems with melting etc on the 4090, i cant claim warranty, as the gpu maker of your choice says, you did not use the supplied cable that came with your gpu, like the cable that comes with a FE for example.
So far as I'm aware, the melting occurs on the card's end, not on the PSU end, so if you buy a PSU that has an old version of the connector, I'd assume you could still replace the cable?
From what I've seen, that's correct, they won't support the warranty if you don't use the adapter.
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Ah, i thought the connector on the psu was being changed also, but i guess it don't really matter, as i have to use 3 of the old pcie connectors anyway, otherwise i loose warranty, makes the new power supply 16 pin connector redundant anyway.