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#1 pryogene  Icon User is offline

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Need help selecting a new Power Supply

Posted 10 September 2014 - 05:21 AM

Hi there,

I built a PC in January and, long story short, now I want to overclock it. Specs -

Core i5-4670k, Corsair 8GB 2133, MSI GTX 770 Lightning, Corsair CX600 PSU, Asus Z87i-PRO.

- my chip will happily hit 4.4GHz but at that point the system gets a little bit wobbly. Even dialing it back to 4.2 renders it a little wobbly - white dots etc. The overclock had a +0.030 offset on the core voltage. I think my problem lies in the 46a 12v rail not being big enough or strong enough to handle it and so I want to get a better supply for my needs.

As an aside, I calculated the draw and it sits nicely within the bounds - 520w out of 600w.

So I was thinking an AX860, it gets good reviews and seems to be used by many overclockers. My price limit is maybe £150 but I'd really like options in terms of price.

I'd only like to hit 4.6 at best. Cooling with an H60 at the moment, planning to upgrade my cooler at the same time.

Thanks guys!

This post has been edited by pryogene: 10 September 2014 - 05:45 AM


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Replies To: Need help selecting a new Power Supply

#2 modi123_1  Icon User is offline

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Re: Need help selecting a new Power Supply

Posted 10 September 2014 - 06:52 AM

Pick a silver/gold rated corsair at 850 w or better.
http://pcpartpicker....r-supply/#w=900,800&sort=a7&m=52,11,57,95,71,39&e=4


... though I am not certain what "the system gets a little bit wobbly" means.
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#3 pryogene  Icon User is offline

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Re: Need help selecting a new Power Supply

Posted 10 September 2014 - 07:33 AM

View Postmodi123_1, on 10 September 2014 - 07:52 AM, said:

Pick a silver/gold rated corsair at 850 w or better.
http://pcpartpicker....r-supply/#w=900,800&sort=a7&m=52,11,57,95,71,39&e=4


... though I am not certain what "the system gets a little bit wobbly" means.


So an RM850, AX860 or AX860i.

By wobbly I mean in load situations it presents graphical anomalies (such as white spots in games) and occasionally hangs for a split second. Long enough to see that it's stopped.
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#4 modi123_1  Icon User is offline

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Re: Need help selecting a new Power Supply

Posted 10 September 2014 - 07:54 AM

.. and you are certain that is not the heat, thermal paste, or issue with the videocard?
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#5 pryogene  Icon User is offline

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Re: Need help selecting a new Power Supply

Posted 10 September 2014 - 08:01 AM

View Postmodi123_1, on 10 September 2014 - 08:54 AM, said:

.. and you are certain that is not the heat, thermal paste, or issue with the videocard?


I've kept a keen eye on the temps - 80 and below on the CPU at load, thermal paste is okay but will be changed with a new cooler anyway. Video card presents no problems under the usual levels of stress. I might well change the cooler first and see how that fares.
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#6 modi123_1  Icon User is offline

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Re: Need help selecting a new Power Supply

Posted 10 September 2014 - 08:19 AM

Also - if you are *not* overclocking your videocard, but are getting artifacts, then you may want to eyeball if your pci bus and motherboard. See if you can lock your pci bus.. I don't know what your bios/uefi is showing, but if you are getting odd graphics because of a CPU OC then it might be shoving things down the bus garbled.

http://www.bit-tech....7i-pro-review/7
http://www.ocdrift.c...-asus-z87i-pro/
http://www.tomshardw...core-4670k.html
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