Hey guys! What power supply for an R9-290 + 3570k (both OC + Watercooled)

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maza90210

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Aug 22, 2012
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In my next build, I hope to go all out (if I get enough money), that's besides the point anyway.
So I'm getting mixed results for a power supply for a build with the r9 290.

I am going to use an NZXT phantom, and I'll add a front fan red LED. I think I'll use a 240mm radiator on the top, and a 240mm radiator on the bottom (I'll remove the drive cage), I'll use an XSPC photon 170 pump/res combo (it will use a d5 pump).

Full Components:
-Asrock fatal1ty professional z77
-3570k (I hope to OC, around 4.5ghz - 5.0ghz)
-r9 290 (Hope to overclock after I water cool)
-8gb 1600mhz (may add some more ram)
-128gb SSD for boot drive and a seagate SSHD 1tb

I was thinking about the Corsair AX760 (not the i), would this be overkill? I don't really want to waste money, but then again, I don't want to cheap out on the power supply. I normally shop at Overclockers.co.uk or Scan.co.uk (in the UK, so please don't post newegg links, wish I could buy from newegg), the AX760 is really stretching the budget @£137, so that is the limit really.

If there is any more information I missed out, please ask.

Thank you in advance!
 
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legokill101

legokill101

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Apr 10, 2013
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any quailty power supply in the 600-700 watt rage should be fine
good manufactures are in no peticular oder: be quite, xfx, corsar, fractal designs, season, antec, silverstone, newer ocz power supys, and pc and power cooling
 
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ko888

ko888

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Feb 18, 2009
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For a system using a single AMD Reference Design Radeon R9 290 graphics card AMD specifies a minimum of a 600 Watt or greater system power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 40 Amps or greater and have at least one 6-pin and one 8-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) rated at 45°C - 50°C ambient temperature, is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.
 
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maza90210

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Aug 22, 2012
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I am interested in the Antec HCG 620w, made by seasonic, do you think this will handle the PC?
 
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ko888

ko888

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Feb 18, 2009
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The Antec High Current Gamer 620W (HCG-620) power supply unit, with its maximum combined +12 Volt continuous current rating of 48 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with a single Radeon R9 290 graphics card.

Since you're going to be overclocking I would recommend that you get a PSU with a little more headroom.

If you need to bump up the voltage of the CPU and/or GPU to achieve a stable overclock then the power draw can increase dramatically.
 
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Sakkura

Sakkura

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Aug 22, 2011
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The Antec HCG uses the same Seasonic S12II design as the XFX Core Edition 650W. They cost essentially the same, but the XFX has slightly increased specs.
 
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