How many watts do I need of PSU on PC with integrated videocard

Oct 26, 2018
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Hello



I'm trying to use this tool for calculate necessary num of Wats for PSU: http://www.coolermaster.com/power-supply-calculator/.



My specs are:

AMD Ryzen 5 2400G
ASRock B450M-HDV
PVLR416G300C5K - 2x 8Gb 3000
Western Digital WD Blue Desktop 2 TB (WD20EZRZ) -2x
SSD Samsung MZ-N6E250BW



I have integrated video card (Vega 11) with 2400G. and I dont saw integrated GPU Vega 11 in drop-down list menu for videocard.



How much watts do I need? 400, 430 or 450?
 

4745454b

Titan
Moderator
First, watts isn't the end all thing you need to worry about. Build quality is just as important. You need to make sure you buy a QUALITY PSU, not just any 400W PSU.

https://www.amd.com/en/products/apu/amd-ryzen-5-2400g

The 2400G has a power draw of 65W. I usually budget another 50W for everything else. So maxed out you should be looking at 100W+. This isn't very much. A quality 300 or 350W PSU can handle that. It's generally "best" to get a 450W however. Those are usually really easy to find cheaply and of a good quality. They will also handle GPU upgrades for when you finally buy one. This is massive overkill, but at $50 there is little reason to buy anything else.

https://pcpartpicker.com/product/KmgzK8/seasonic-focus-gold-550w-80-gold-certified-semi-modular-atx-power-supply-ssr-550fm
 
Oct 26, 2018
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Yes, you're right. I trying to look out for 80+ certificate bronze or gold. But anyway I can't calculate the sum of necessary watts.

65 watt for 2400G is "Thermal design power TDP"

"The thermal design power (TDP), sometimes called thermal design point, refers to the maximum amount of heat generated by the CPU, which the cooling system in a computer is required to dissipate in typical operation."

I thought it is not equal to the power requirements but something else. I think it's a specification of how much power need to be covered by cooling system.


For example, I'm using newegg.com and cant find the Watt requriements specifications (https://www.newegg.com/Product/Product.aspx?Item=N82E16813157842&Description=ASRock%20B450M-HDV&cm_re=ASRock_B450M-HDV-_-13-157-842-_-Product)

 

4745454b

Titan
Moderator
They aren't. TDP does not equal power draw. At least they aren't 1:1. But you also can't create or destroy energy either. So if it's putting out 65W of heat, it can't be drawing 20W of electricity. Nor should it be drawing 200W. What the TDP is gives people a rough ballpark so we can estimate what's needed. It's not exact, but it's close.
 
Oct 26, 2018
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My specifications is:

AMD Ryzen 5 2400G
ASRock B450M-HDV
PVLR416G300C5K - 2x 8Gb 3000
Western Digital WD Blue Desktop 2 TB (WD20EZRZ) -2x
SSD Samsung MZ-N6E250BW
Wi-Fi board
2xUSB3.0
I read some FAQ'.s. If I get it right and did right calculations, then my data is :

LGA115x from i5 / i7-2xxx to i5 / i7-7xxx (including options with free multiplier and engineers), LGA771 / 775, AMD Phenom II or newer - with TDP up to 95 W inclusive, Ryzen 1700/1600 / 1500X / 1400 / 2x00G , overclocking (ITS self-collecting)
Integrated videocard
>>>290-300 Wt

2 HDD Western Digital WD Blue Desktop 2 TB (WD20EZRZ)
>>>4-6 Wt (x2)

SSD
>>>7-9 Wt

Wifi card
>>>10 Wt

Cooler
>>> 2.5 Wt Wt

RAM
>>>1-3 Wt (x2)

USB devices
>>> 4.5 Wt (x2)

Total summ: 348.5 Wt
In some forums I was I've got advice on PSU for 430 Wt. For this module: Sea Sonic Electronics S12II-430 (SS-430GB Active PFC 430W (https://www.newegg.com/Product/Product.aspx?Item=9SIA4CP1GF9465&Description=S12II-430&cm_re=S12II-430-_-9SIA4CP1GF9465-_-Product).
This PSU have analogue from the same brand is Sea Sonic Electronics ECO 430W. It cost some dollars more, but I didnt got whats the difference between them.

I do not plan to overclock my system, also I rare playing games.

At some different tech forums I've got different recommendations of PSU voltage. Some adviced me 430, some 400, some 450 or even 500.

My question is, is 350 Wt for me is enough? Do I need to look for PSU 400 Wt, 430 Wt or 450 Wt? What's the best options for voltage do I need?

I need from PSU just stable and reliable long work, but I don't to buy PSU's with voltage more than I need for purposes.
 

4745454b

Titan
Moderator
LGA115x from i5 / i7-2xxx to i5 / i7-7xxx (including options with free multiplier and engineers), LGA771 / 775, AMD Phenom II or newer - with TDP up to 95 W inclusive, Ryzen 1700/1600 / 1500X / 1400 / 2x00G , overclocking (ITS self-collecting)
Integrated videocard
>>>290-300 Wt
The bolded parts goes back to what I was talking about before. The TDP is not the exact amount. It's not a 1:1 ratio. But at the same time a 95W CPU isn't going to draw 290-300W. An entire system while gaming pulls around 300W. There is no way you need to worry about a 65W, 95W, or 125W CPU pulling 300W from the wall. It just can't. You can't create or destroy energy. You can covert it from one form to another. If you are pulling 300W from the wall, your TDP would be a lot higher.

That PSU is ok. It's not the greatest, but it's not a fire hazard only. If it or the ECO is the only "good" PSU you can afford then buy it. As a general rule I find bronze units to be overpriced. We have basically moved to the point where 80+ Gold units are cheap and plentiful. A good PSU can be bought for ~$50-60, so it makes no sense to buy an old bronze unit for $35-45. Cough up the extra $10 and get a newer platform that performs better. This is not the case for everyone though. If you live outside the USA or you really can't spend more than $35 then the older bronze units make sense.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817139146
New CX 450W 80+ bronze for $50.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817151204
Seasonic focus 450W 80+ Gold for $62 after rebate and shipping.

My question is, is 350 Wt for me is enough? Do I need to look for PSU 400 Wt, 430 Wt or 450 Wt? What's the best options for voltage do I need?
Nothing has changed from my original post. 450W is overkill for your IGP/APU setup, and still allows you to run most GPUs out there. Personally I believe you are overthinking this.
 

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