Power Supply Unit Help???

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JasonC22

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Aug 8, 2013
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What size power supply would you recommend for my build?
I have been told the 850W is overkill and online calculators only recommend 550W?

I will be having:

- Asus GTX 770 direct cu II 2GB GDDR5 GPU
- Asus Z97 wifi AC MOBO
- Intel i7 4770k CPU
- Asus cd/dvd drive
- Corsair RM750w (?????) PSU
- Kingston hyper furyX 16GB Ram
- Samsung 840 EVO 250GB SSD
- 500GB HDD
- Asus VE228HR Monitor

In the future I would like to add a blu-ray drive, and extra monitor and possible another set of ram and maybe one day i might upgrade my 250GB SSD to 500GB

I think ive listed everything

Hope this helps
 
Solution
DonkeyOatie
Sorry. Crossed Purposes again. The Corsair RM650W PSU is a good Tier 2A PSU. You do not need 850W. It is the wattage I'm trying to correct. However, in the USA, the RM650 costs $89.99 and it is fully modular. The PSU's I suggested are just as good, and cheaper.

This http://pcpartpicker.com/part/antec-power-supply-hcg620m is a good, cheaper, semi-modular supply that costs $79.99 and there are cheaper, just as good, non-modular supplies.

The RM is OK, but there are options just as good, but cheaper.
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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550W is the lowest I would do, and it would need to be a good one. How much are you overclocking your CPU?

XFX XFX TS 550W is the cheapest 550W supply I would consider.
Rosewill CAPSTONE-550 good Gold supply
Antec NEO ECO 620C if you are concerned about power.
 
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JasonC22

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Im not overlocking at all or running sli, just one gtx 770 GPU. Its £110 for the RM850w corsair PSU and now ive been told i am overkilling my power supply i want to save the money but also wanna keep a few extra wattage spare for the future uprgades if you understand... Im so confused what to do. Would 650w be sufficient for now and future?
 
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JasonC22

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Aug 8, 2013
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Im sorry for not understanding too good but isit conclusive that I am overkilling my PSu for my needs or not?

Whats the problemwith the RM series corsair PSU's? noone seems to like them...

For gaming and 3d rendering with every setting on ultra for the games would a 650w PSU suite my needs and cope?

 
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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Sorry. Crossed Purposes again. The Corsair RM650W PSU is a good Tier 2A PSU. You do not need 850W. It is the wattage I'm trying to correct. However, in the USA, the RM650 costs $89.99 and it is fully modular. The PSU's I suggested are just as good, and cheaper.

This http://pcpartpicker.com/part/antec-power-supply-hcg620m is a good, cheaper, semi-modular supply that costs $79.99 and there are cheaper, just as good, non-modular supplies.

The RM is OK, but there are options just as good, but cheaper.
 
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Illumynization

Illumynization

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I use a kilowatt meter and it sits on my desk. I have a GTX 780 and a GTX 570 in my PC. When I put a full load on my CPU, and both GPU's one for graphics one for physx, my max wattage has not gone over 450W. When I stress my pc with non benchmark applications such as gaming and rendering, my max load has not gone over 420W. Hope this helps!
 
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JasonC22

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Then I am over killing my power supply by miles then? I thought having an 850w was pushing it but it seems I was being too generous. So would you say a 650w would be good enough for current and future components?

 
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Illumynization

Illumynization

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Yes, as a few of the other guys mentioned, its all about quality here. A high quality 550W or decent quality 650W is plenty to run your system. if you do plan on adding another card in later consider a 700W-750W and even then you should have plenty of head room, the 650W may even run SLI 770s. To be safe though I'd go 750 if you think you would add another card in later.
 
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JasonC22

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I understand. I was thinking of a corsair rm650w for £80. Which is the price of like to go for.
 
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DonkeyOatie

DonkeyOatie

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Your system, excluding GPU, should not exceed 100W. Your GPU uses up to 230 W with some transient demand spikes greater than that. That's a total of 330W. For the best life on your PSU you should not operate it at more than 70% on a regular basis. That means about 470W.

Looking at the good power supplies available, this supply, XFX XFX TS 550W, the one I first suggested, is suitable.

650W is plenty, even if you change your mind and do a bit of overclocking. Pretty much everyone has said the same thing.
 
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JasonC22

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Okay I completely understand now. Thank you for all your help and advice. I am looking into the xfx psi that you have all suggested. Thanks alot

 
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