Power supply strong enough for my build?

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Jaydon

Jaydon

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Jul 13, 2013
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I am building my first gaming computer and right now this is the power supply I’ve chosen:
Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply

Here is my build: https://pcpartpicker.com/user/Jishies/saved/thKNNG

Please make any suggestions; as stated, this is my first build so I’m not too educated. I am wanting to overclock the CPU and GPU.
 
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Satan-IR


I agree, it's always good to to have some head room when comes to PSUs.

PSUs lose some of their juice over time and it's not a bad idea to have some 100-150W extra.

It sometimes makes later additions or replacements (e.g. more demanding CPUs or graphics cards) possible and easier too.
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Satan-IR

Satan-IR

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Apr 18, 2014
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I agree, it's always good to to have some head room when comes to PSUs.

PSUs lose some of their juice over time and it's not a bad idea to have some 100-150W extra.

It sometimes makes later additions or replacements (e.g. more demanding CPUs or graphics cards) possible and easier too.
 
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Jaydon

Jaydon

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So would upgrading to the SeaSonic - 520W 80+ Bronze Fully-Modular Power Supply be too much? I want a little room for upgrades but I also don't want to have too much power and damage my system. :p
 
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Satan-IR

Satan-IR

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Which SeaSonic 520W exact model do you mean?

Yes as I said some head room is OK and too much power would not hurt your system as it draws - and PSU provides - as much as it needs.

You can get a 1KW PSU and if your system needs, say 250W, it would get 250W and the PSU would output 250W.
 
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R

Rexper

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no, that seasonic 520w psu you are likely talking about is only ~480w on the 12v rail. That's hardly a difference to the Corsair CX450m' ~450w.

"Also, You can get a 1KW PSU and if your system needs, say 250W, it would get 250W and the PSU would output 250W."

You forgot about efficiency. It will output 250w, but likely draw atleast 270w.
 
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Satan-IR

Satan-IR

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That's a good point but I didn't actually forget about efficiency and the fact that a PSU would not be at maximum efficiency at say 25% load.

I meant and said when the system needs 250W it draws 250W from the PSU and was not talking about how much PSU would draw from the outlet/mains.

I just wanted to put the OP's mind at rest regarding the "too much power" notion. Honestly I think the OP might know how it works and might have just made a joke considering the ":p" ;)
 
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Rexper

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Oh sorry, by "it would get 250W" I thought you meant the PSU.

How are some negatives/positives with higher wattage,
- possibly less efficient, though in alot of cases it would be negligible.
- Either more expensive, or if same price could likely be worse quality which is actually more important.
- More room for upgrades.
-
 
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