Does the PSU reduce the overall heat of the PC?

FreeaKKY · Aug 25, 2016

Again it's me with kind of a stupid question, I just want to ask, does the PSU affect the heat of the CPU and GPU your PC is running at? For example will there be a difference if I change my 300w PSU to a 500w one?

ajpaolello · Aug 25, 2016

No. Not at all.

13thmonkey · Aug 25, 2016

probably cooler with a larger one.

ajpaolello · Aug 25, 2016

I'm actually curious how that could be the case if someone would like to explain because logically it doesn't to me. The heatsink of a CPU and GPU are what pull heat away from the silicon. All power does is give the card or chip power to work. So in theory it should be a smaller PSU that makes them cooler because less wattage less work they can do and less heat output. But realistically that makes no sense.

FreeaKKY · Aug 25, 2016

ajpaolello :

So.. what does the fan do in the PSU then?
https://www.amazon.co.uk/Corsair-CP-9020097-UK-VS550-Power-Supply/dp/B00TE4XSMA/ref=sr_1_1?ie=UTF8&qid=1472141088&sr=8-1&keywords=corsair+psu+500w

I'm confused.

13thmonkey · Aug 25, 2016

ajpaolello :

A PSU will only provide what is needed, and no more, so in the example of the 300 and 500w PSUs they will both provide perhaps 250w.

However the 300w PSU will be nearer the limit and be less efficient, whilst the 500w will be in it's sweet spot. Poor efficiency is the cause of heat.

Also the 500w will have better heat sinks and fans and be able to manage that great better.

ajpaolello · Aug 25, 2016

The fan cools the PSU. It too has electronic components inside doing work that need cooling.

ajpaolello · Aug 25, 2016

That fan draws in air not pushes out air.

Dark Lord of Tech · Aug 25, 2016

FreeaKKY :

ajpaolello · Aug 25, 2016

Thank you for the visual Blackbird.

FreeaKKY · Aug 25, 2016

ajpaolello :

So I'm not really experienced as you can see, could you take a look at the temp of my PC (keep in mind its a pretty hot day outside around 30c) are they fine? The system is idle, this is my biggest concern when I looked at these, that's why I started asking and questioning my self if it's the PSU that will make the difference.

http://imgur.com/a/Fs99i

ajpaolello · Aug 25, 2016

Those aren't terrible idles. What CPU cooler are you using and what specific GPU?

FreeaKKY · Aug 25, 2016

ajpaolello :

I think it's just the standart intel cooler, i didn't replace it since i just bought the computer out of the shop, as the the GPU it's the GeForce GTX 750ti. However will buying http://www.ebuyer.com/store/Components/cat/PC-Cooling-and-Modding/subcat/CPU-Coolers and http://www.ebuyer.com/663815-noctua-nh-d15-dual-radiator-quiet-cpu-cooler-with-two-nh-a15-fans-nh-d15ie=UTF8&qid=1472141088&sr=8-1&keywords=corsair+psu+500w decrease the temp of the CPU?

Dark Lord of Tech · Aug 25, 2016

Temps are pretty much normal , considering it's around 30C where you are.

ajpaolello · Aug 25, 2016

For stock those aren't bad idles. That Noctua would probably make a difference, especially temps for when the CPU is doing work.

Kurz · Aug 25, 2016

Higher 80 rating (Titanium, Platinum, Gold) the less heat output.
Because the better efficiency the less heat output.

FreeaKKY · Aug 25, 2016

Thanks for all the answers! I'm really happy with what I have read here

ajpaolello · Aug 25, 2016

Glad we could help clear up some confusion in your head.

Does the PSU reduce the overall heat of the PC?

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