How much power do I need?

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russia_on_rails

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Oct 23, 2014
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I'll use the following parts:
Motherboard: Asus Z97M-PLUS (mATX)
CPU: Intel i7 4790K
GPU: [Integrated] Intel HD Graphics 4600
RAM: Kingston HyperX FURY 2x8GB 1600MHz
CPU cooler: Still undecided. Should be enough for overclocked 4790K.
Other: 1xSSD, 2xHDD, 1xDVD-Drive

I'm planning to make light overclock in the future for CPU and RAM. May be after 1-2 years. Is 650Wt power supply will be enough for that configuration?

P.S. And one more question: do I need to use mATX power supply in mATX case? Is ATX power supply compatible with mATX case?

Thanks in advance.
 
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Newbbuilder11


I never said buy a 1200 watt PSU lol, and I am saying "what if" he wants a better GPU? Like a 970? His system is to highend for a "750ti" I am...
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Newbbuilder11

Newbbuilder11

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While the person above me is correct that it is to much wattage I think it's just fine. It usually is bad to have your PSU on to much load and can decrease it's life span so you are giving it alot of headroom, also if you plan to get a GPU in the future then you will be just fine and your PSU won't work to much to power it :p

and no, ATX PSU's can be used in a Matx case.
 
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Zerk2012

Zerk2012

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I would look at the Rosewell Capstone 450 Watt plenty of power and will allow you to add a decent video card in the future if needed.
A standard ATX power supply works in u ATX cases unless your getting a slim line.
The PC as you have it now will draw about 150 Watts during a full system stress test and more like 110 under normal use.
 
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Newbbuilder11

Newbbuilder11

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I would advice against a 450, if he does get a higher end card it will draw to much load on the PSU and most likely will decrease it's life span as well, you have to consider giving it some headroom, also, the Capstone is alright, but the newer photon seems to be a better choice in the matter. And that system is most likely going to be 200 watts idle and 240 on load (Keep in mind he is going to overclock).
 
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Zerk2012

Zerk2012

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Wrong as of now hes has no video card so even a low wattage like a 750ti would be a 500% increase and still not strain that power supply.
The build quality of the photon is not the sane thats why it just has a 5 year warranty instead of the 7 and would add more cable leangh to hide in a Uatx case.
The way your thinking everybody should buy a 1200 Watt Power Supply just in case they in the future go 3 way SLI.
Pulling 65% of power from a PSU is finr and in no way shortens the life of it. Heat is the only determing factor the ages the power supply depending on what the caps are rated for.
 
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Newbbuilder11

Newbbuilder11

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I never said buy a 1200 watt PSU lol, and I am saying "what if" he wants a better GPU? Like a 970? His system is to highend for a "750ti" I am thinking logically of the future here not at what is present, a PC is designed for that of a basis of having the potential of upgrading in the future, not bare minimum. Now, I agree with the warranty here, but the Capstone is older than the "NEWER" photon, more length means its easier to pull cables to and from and not having to worry about "WILL IT REACH?" The slackier the cable is the EASIER it is to MANAGE the cables "I KNOW FROM EXPERIENCE, and ZIP-TIES DO HELP YA KNOW". Now, please don't say as you know me, I do not recommend people 1200 watt's I simply go 100 watt's higher than regularly needed to insure everything is powered and the PSU doesn't have to work to hard to supply power.

So therefore, I think a sweet spot in this matter would be...550-600 watt's :)
 
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Newbbuilder11

Newbbuilder11

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As your mobo has crossfire support instead of SLI I suggest you go for High-end Radeon cards, but if you want a Nvidia card you can still go for it, I calculated the wattage of your rig and found out it takes atleast 388 watts(estimated) to be safe you can go for either a 500-550 if you really want to save money.

http://www.tomshardware.com/forum/id-2263985/power-supply-tier-list.html

look at this list to find some quality PSU's :)
 
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