Is 850 watts good enough for this build?

[Drinjanin]

I have already ordered some parts for this build: https://pcpartpicker.com/list/yRMhv4
What do you, guys, think, will 850w PSU suffice?

[Kamiyama]

It's overkill. You could get by with a 650 watt PSU.

A general rule to follow is to add your CPU wattage and GPU wattage and then multiply by 2 to get a rough idea of about where your total wattage should be.

That's a 120w CPU and a 200w GPU. So about 320 x 2 puts you in the 650w ballpark.

[Kamiyama]

You don't need to return it if you already ordered it. Your PSU should only draw however much it needs at any given time. You just might have overpaid a little.

[Drinjanin]

My logic goes like this, considering advices given on internet from famous YouTube channels and various forums, Reddit, etc:
Nvidia MSI 4070 Ti 16Gb is rated for 285W, and I added 100W on top of that, like that YouTuber Steve guy reccomends.
AMD 7800X3D is rated for 120W.
The cooler Be Quiet! Dark Rock is marked for 210W TDP. Now this tdp is a bit confusing to me.
Plus all the other components included, say 150W extra, I am a little worried it won't be enough. But then again, I think it will suffice. I just need additional opinions. :-)

[Kamiyama]

If that's a 285w card then you're right about where you need to be.

[Lady Miquella]

850 W will drain your electric bill. I just made a post about this in another game and you brings this up.

This is a lot, almost a radiator. If you play straight 8-10 hours a day your bill will be astronomical

Couldn't you choose something less power, like a laptop ?

[Kamiyama]

TDP is thermal design power. It's referring to the heat generated by the wattage of the CPU. More energy = more heat.

You have a 120w CPU and the cooler is rated to cool up to 210 TDP. Which is good. You want a cooler that can handle your processor.

[Fake]

Bro, get a 1000watt PSU. You'll thank me later.

Why? Because you want the 1000watt PSU, get what you want, not what you need.

[Drinjanin]

chum の投稿を引用：

850 W will drain your electric bill. I just made a post about this in another game and you brings this up.

This is a lot, almost a radiator. If you play straight 8-10 hours a day your bill will be astronomical

Couldn't you choose something less power, like a laptop ?

I did not order this PSU yet. I want to go with something that will supply enough power and keep my PC safe during blackouts, and drops in electrical power. By the way, how come will it make more bill expenses, if it doesn't use, say 850W, all the time.

[A&A]

it is fine

[Lady Miquella]

Drinjanin の投稿を引用：

chum の投稿を引用：

850 W will drain your electric bill. I just made a post about this in another game and you brings this up.

This is a lot, almost a radiator. If you play straight 8-10 hours a day your bill will be astronomical

Couldn't you choose something less power, like a laptop ?

I did not order this PSU yet. I want to go with something that will supply enough power and keep my PC safe during blackouts, and drops in electrical power. By the way, how come will it make more bill expenses, if it doesn't use, say 850W, all the time.

I suspect you don't plan to buy 850 W PSU to keep it shut down.

The elctric bill will easily jump high. Hope you have solar panels in your porch because 850 W is lots of power

[Drinjanin]

Fake の投稿を引用：

Bro, get a 1000watt PSU. You'll thank me later.

Why? Because you want the 1000watt PSU, get what you want, not what you need.

Are you being sarcastic or what. First I wanted to go with Nvidia 4080 ProArt, but these prices in European countries are crazy. With Nvidia 4080 I might have gone with the 1000W PSU.

[Fake]

chum の投稿を引用：

Drinjanin の投稿を引用：

I did not order this PSU yet. I want to go with something that will supply enough power and keep my PC safe during blackouts, and drops in electrical power. By the way, how come will it make more bill expenses, if it doesn't use, say 850W, all the time.

I suspect you don't plan to buy 850 W PSU to keep it shut down.

The elctric bill will easily jump high. Hope you have solar panels in your porch because 850 W is lots of power

The difference is about $1-$3/yr. If that is a major concern, than pc gaming shouldn't be an option.

[vkobe]

chum の投稿を引用：

850 W will drain your electric bill. I just made a post about this in another game and you brings this up.

This is a lot, almost a radiator. If you play straight 8-10 hours a day your bill will be astronomical

Couldn't you choose something less power, like a laptop ?

psu only run max capacity if your pc eat it, but if you just run OS and nothing more it not going to eat full psu

also it is recommended to have more psu than your computer need than not enough psu to avoid big mess for your cpu, OS and motherboard

[Tonepoet]

This is the wrong subform for hardware advice but Corsair's guidance[www.corsair.com] is processor T.D.P.(120) + Card T.D.P. (285) plus 150 for other components, plus another 150 hundred for overhead and efficiency

120+285+300=755, so if you were going by Corsair's recommendation you only need 800 watts, since I'm pretty sure that would be the lowest increment above 750.

You also have to keep in mind that the last 150 watts isn't strictly necessary going by their logic. It's just for overhead and efficiency, and insofar as efficiency is concerned it might be better to go up a tier in the power efficiency grading than to factor in overhead to keep the P.S.U. near 50% load. It's just so you can upgrade to a more power hungry card in the future if you want.

Getting a bigger power supply doesn't necessarily hurt though and 850 gives you the headroom to upgrade to an 80 class card. It just costs more than a weaker power supply.

The P.S.U. is also the part that makes the most sense to future proof since those standards rarely change. 850 watts is fine.

[Drinjanin]

Tonepoet の投稿を引用：

This is the wrong subform for hardware advice but Corsair's guidance[www.corsair.com] is processor T.D.P.(120) + Card T.D.P. (285) plus 150 for other components, plus another 150 hundred for overhead and efficiency

120+285+300=755, so if you were going by Corsair's recommendation you only need 800 watts, since I'm pretty sure that would be the lowest increment above 750.

You also have to keep in mind that the last 150 watts isn't strictly necessary going by their logic. It's just for overhead and efficiency, and insofar as efficiency is concerned it might be better to go up a tier in the power efficiency grading than to factor in overhead to keep the P.S.U. near 50% load. It's just so you can upgrade to a more power hungry card in the future if you want.

Getting a bigger power supply doesn't necessarily hurt though and 850 gives you the headroom to upgrade to an 80 class card. It just costs more than a weaker power supply.

The P.S.U. is also the part that makes the most sense to future proof since those standards rarely change. 850 watts is fine.

Thanks. I posted there as well.