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Raptor_Fawr

Is my psu wattage enough?

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Posted · Original PosterOP

Yesterday I've tested an old motherboard that I want to borrow to a friend because his computer sucks. I've hooked up a be-quiet 600w psu to an overclocked i5-750 @ 3,6ghz and I tested some games with 8gb ram (4x2gb) and my old r9 290x

 

Everything worked and I was ready to tell him that everything worked fine, until I used some "psu wattage calculators" online. Apparently 600w is not enough for this system configuration to run properly, I should go for a 650w power supply. 

 

Now, those parts would be given for free to him so he can't really complain, but I don't want his computer to die mid gaming session because the psu is weak. 

 

What do you guys think? 

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3 minutes ago, Raptor_Fawr said:

What do you guys think? 

it's fine


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Sony Xperia Z1 / Z2 / 10 ii, Asus Strix 970 / 1070, Samsung SSD, WD HDD, Corsair PSUs (AX, RM, CX(grey)), GeForce GPU, NZXT N450/S340, be quiet! Coolers, G.Skill Trident RAM, Logitech M525, Logitech G440, Razer Deathadder Elite

 

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be quiet! - sent me AM4 mounting for my DRP3 even though it's way past the timeframe stated, no questions asked

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1 hour ago, Raptor_Fawr said:

Apparently 600w is not enough for this system configuration to run properly,

wattage calculators are just bs, don't use them. 

wattage wise it should be fine, though what specific model? 


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Wārudobītā

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3100.

B550m TuF plus.

Hyper x rgb 8 gig stick. (MJR or CJR  i still don't know lol).

1650 super.

CX450.

MX500.

NX500.

 

 

 

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30 minutes ago, Raptor_Fawr said:

What do you guys think? 

To get a rough impression of how much power your PC will need under FULL load you can add up all the TDPs of your components. f.e.:

- i5-750: 95W (OC'ed more like 120-140W)

- r9 290x: 250W

- Mobo and RAM don't need much power. I just calculate with roughly 10-20% of what the CPU needs: ~25W (for both together)

 

So all in all with that configuration you probably only need around 400W maybe 450W maximum. That is if CPU and GPU both were at 100% load.

 

Those are only rough guidelines but in my experience they work pretty good.


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Posted · Original PosterOP

Thanks to all of you, I feel relieved then. TofuHaroto asked for the specific model but I am not aware right now, it's from be quiet and it's pretty recent I bought it on amazon this year because I needed a spare psu for component testing 

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