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  #1  
Old 10-08-14, 08:04 PM
OMEGABerg OMEGABerg is offline
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Need help with PSU choice

Hello!
I need some advice about what PSU i should get.
I was thinking about like a RM 850 or 750 perhaps and this is becuase i will probably put in another GPU soon.
MY system specs are:
CPU: Intel i7 4770K
GPU: Asus R9 270x 4gb
Motherboard: ASUS ROG Maximus 6 Formula
RAM: Kingston HyperX 2133mhz
SSD: Kingston HYperX 120gb
5x 120 mm fans, 1x 140mm
Its my specs for the system i got so hope some one can help me with this PSU issue. Thanks in Advance

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  #2  
Old 10-08-14, 08:09 PM
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AverageNinja AverageNinja is offline
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Hi and welcome to the OC3D forums!

To answer your question, this video should help a lot:



For your configuration, I'm guessing a RM650 will be enough, even with the second GPU
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  #3  
Old 10-08-14, 08:14 PM
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Xrqute Xrqute is offline
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You'd be fine with a 550-600watter

I built a 4820k rig with 2x 660's slapped it on an RM650 and she runs beautifully.
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  #4  
Old 10-08-14, 09:02 PM
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Feronix Feronix is offline
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Quote:
Originally Posted by Xrqute View Post
You'd be fine with a 550-600watter

I built a 4820k rig with 2x 660's slapped it on an RM650 and she runs beautifully.
For a single 290x this would be plenty yeah.

If you want to go CrossfireX in the future then you'll want to pick up something like the RM650 or AX860(i).
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  #5  
Old 11-08-14, 10:26 AM
OMEGABerg OMEGABerg is offline
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Even if i will OC my cpu and do crosfire doesn't that mean that i need to get som what of a higher W on my PSU ? When i OC the CPU ill install the H100i most likely wich draws power aswell do i then need mroe then the 650 or 750?
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  #6  
Old 11-08-14, 11:49 AM
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Dicehunter Dicehunter is offline
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Quote:
Originally Posted by OMEGABerg View Post
Even if i will OC my cpu and do crosfire doesn't that mean that i need to get som what of a higher W on my PSU ? When i OC the CPU ill install the H100i most likely wich draws power aswell do i then need mroe then the 650 or 750?
An H100i on it's own if you don't have any fans plugged into it draws around 5 watts max according to some independent testers so this shouldn't be any concern, A 650w will be fine even with overclocking.

My brother runs a 4770K cooled by an H110 and overclocked to 4.60GHZ, Sabertooth Z87, 16GB of 2400MHZ memory, 780 Ti overclocked slightly, 1 x SSD and 1 x HDD, A total of 8 fans and pulls around 550w from the wall and he has a 650w PSU.

In short a 650w will be fine
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  #7  
Old 11-08-14, 12:26 PM
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tinytomlogan tinytomlogan is offline
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RM650 is mega quiet - you might want to go with a higher wattage on lower spec units to keep the noise down.

Theres a HX650i due out shortly I can give you a nudge is pretty good.
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  #8  
Old 11-08-14, 12:50 PM
OMEGABerg OMEGABerg is offline
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Thanks for the help =) I think atleast now what i want to buy =D
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