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PSU: 650W 80+ VS 750W

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May 22, 2012 8:04:57 PM

General specs of my next rig

i5 2500k (OC to 4,2Ghz)
8Gb 1333Mhz RAM
Antec H2O 620 cpu cooler
Gigabyte Radeon HD 7870 OC Version
around 5 fans
ASRock Z68 MOBO
500gb HDD
120Gb SSD

Which one of these PSUs should I buy?

Rasurbo Real&Power 650W 80+
http://www.mindfactory.de/product_info.php/info/p688576...

Rasurbo GaminX&Power 750W
http://www.mindfactory.de/product_info.php/info/p667804...

Will the 650W be enough or should I go for the 750W? (same price)

More about : psu 650w 750w

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a c 158 ) Power supply
May 22, 2012 8:40:33 PM

A system with an HD7870 requires a good qualty 500W PSU with 32A on the 12V rails and two 75W PCIe power connectors. Your system only has a mild OC on the processor....taking a look at the site you linked a great PSu for around the same price is the Superflower Golden Green 550W: http://www.mindfactory.de/product_info.php/info/p688894...
or the Seasonic S12II-520: http://www.mindfactory.de/product_info.php/info/p640838...

That Superflower is a great PSU and would be my preference. It's 80+ Gold and well reviewed by many reputable sites. The 45A on the 12V rail is more than enough for your build and significant OCs on the CPU and GPU.
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a c 243 ) Power supply
May 22, 2012 8:48:46 PM

+1
Those higher wattage Raspberries are cheaper for a reason

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a b ) Power supply
May 22, 2012 10:46:59 PM

Bofink said:

Which one of these PSUs should I buy?
(same price)


The answer is neither out of those two. The options that Rugger said are much better options.
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a c 1204 ) Power supply
May 23, 2012 5:14:55 AM

Rasurbo has a reputation for crappy PSUs because of the OEM they use.

Any company that uses HEC/Compucase as the OEM for their power supplies suffers from that same stigma.
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May 23, 2012 4:08:28 PM

Alright, going for the SuperFlower :) 

Thanks Rugger for the good post :) 
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May 23, 2012 4:08:53 PM

Best answer selected by Bofink.
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a c 158 ) Power supply
May 23, 2012 8:36:20 PM

Glad I could help - ty for the BA. ;) 
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