How many watts?

adrianexus · Mar 12, 2018

I am making a Ryzen 3 1200 build, which will have a RX 460, MSI B350 Gaming Pro, and 8GB 2133 ram (no overclock probably.) What power supply should I get? Could I go with a 450w EVGA one, but it is 80+bronze, or be safe and get a 600w regular 80+ standard? Would the 450w one be good enough if I overclocked the Ryzen (3.8gHz preferably.)

feelinfroggy777 · Mar 12, 2018

450 watts is more than enough for that system.

Make sure you get a good PSU from a good vendor such as EVGA, Corsiar, or Seasonic. Not all PSUs are created equal and faulty PSU can damage your rig.

Additionally, I am not sure if you have ordered the RAM, but you should look at getting some higher speed RAM. I would look at 3000mhz or higher instead of the 2133. Ryzen scales well with high speed RAM and it will make a difference. Also, you should get a 2 stick kit (2x4gb) instead of 1x8gb. You have a dual channel board and if you only use one stick of RAM you will run in single channel and it will hurt performance due to the way Ryzen scales with RAM.

Here is a good PSU from seasonic to pair with that build

PCPartPicker part list: https://pcpartpicker.com/list/RLXscf
Price breakdown by merchant: https://pcpartpicker.com/list/RLXscf/by_merchant/

Power Supply: SeaSonic - S12II 430W 80+ Bronze Certified ATX Power Supply ($43.99 @ SuperBiiz)
Total: $43.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-03-12 09:57 EDT-0400

Zerk2012 · Mar 12, 2018

That 430 watt is not a good buy since you can get the 520 watt for the same price.
https://pcpartpicker.com/product/fZyFf7/seasonic-power-supply-s12ii520bronze
I would get better quality and a more modern platform.

https://pcpartpicker.com/product/Qb8j4D/seasonic-focus-gold-450w-80-gold-certified-semi-modular-atx-power-supply-ssr-450fm

feelinfroggy777 · Mar 12, 2018

Zerk2012 :

The 520 watt is cheaper due to a rebate. I don't know where the OP is from and the rebate may only be offered in the US. I agree, I would go with the 520 watt PSU and take the rebate. But 430 watts will be plenty for that system if that is the better buy where the OP if from.

bicycle_repair_man · Mar 12, 2018

Brand alone doesn't necessarily mean a quality product. Corsair make a wide range of PSUs and they all vary in quality.

If you give us a budget then we can make recommendations for you.

Zerk2012 · Mar 12, 2018

Corsair has never made a power supply their all rebrands.

adrianexus · Mar 12, 2018

I can go like $35 max on the PSU (no rebates appreciated). This is the one I’m looking at currently, seems like it would be fine. I tried out some power wattage calculator websites and they all seem in the range of saying of getting 450-500w.

Zerk2012 · Mar 12, 2018

feelinfroggy777 :

The 430 is 3 bucks lower after shipping from Super Biz. Even at Super Biz it comes with a 15 buck rebate so really no clue what your saying.
https://www.superbiiz.com/detail.php?name=PSS12II520&c=CJ

Zerk2012 · Mar 12, 2018

adrianexus :

PSU caluclators are very bad.
65 watt CPU
75 watt GPU
Less than 60 watts for the rest.
200 Watt PC.
The bad thing is in your price range all you can buy is a low quality pile of junk.
You need to spend a bit more and buy a decent PSU.
44 bucks after shipping.
https://www.newegg.com/Product/Product.aspx?Item=N82E16817139201&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

feelinfroggy777 · Mar 12, 2018

Zerk2012 :

What I am saying is not everyone can buy from Superbiiz. Maybe the OP does not live in North America? Or maybe he does who knows?. I have found that a lot of people who ask questions in the morning on Tom's Hardware are overseas. I assume because it is evening there. This was one of the first questions I saw this morning.

His original question was how many watts does his system need. We both agree that 520 is more than he needs and a 400 watt PSU would be plenty. But I recommended a 520 watt PSU, he might thinks he needs a 520 watt PSU when in reality he only needs a 400 watt.

But I digress.

It does not matter, it will be hard to find a quality PSU out the door for $35.

bicycle_repair_man · Mar 14, 2018

OP, don't just think about the here and now, also consider what upgrades you might make. PSUs generally perform at their most efficient between 50%-60% load but there's nothing wrong with going overkill on wattage.

Tell us where you live and we can make proper recommendations, otherwise we're just making assumptions.

adrianexus · Mar 14, 2018

This is the power supply I'm currently hoping will be good. https://www.evga.com/products/product.aspx?pn=100-B1-0450-RX --EVGA 450w with 80+ Bronze-- Also, I live in the US.

feelinfroggy777 · Mar 14, 2018

adrianexus :

Its not a great PSU. But it wont burn your house down either. There are a lot worse PSUs out there that you could get. The seasonic PSU is better, but if you cant afford it, then you cant afford it.

bicycle_repair_man · Mar 15, 2018

You might want to give this a look:

https://pcpartpicker.com/product/nB3RsY/seasonic-power-supply-s12ii620bronze

Not only is it far superior, it's pretty much the same price.

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