PSU: 650W 80+ VS 750W

[Bofink]

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_650W-Rasurbo-REAL-amp-POWER-RAPM650-80--Modular.html

Rasurbo GaminX&Power 750W
http://www.mindfactory.de/product_info.php/info/p667804_750W-Rasurbo-GaminX--amp--Power-GAP767-V2.html

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

 

[Rugger]

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_550W-SuperFlower-Golden-Green-Pro-80plus-gold.html
or the Seasonic S12II-520: http://www.mindfactory.de/product_info.php/info/p640838_520W-Seasonic-S12II-520-80--Bronze.html

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.

 

[delluser1]

+1
Those higher wattage Raspberries are cheaper for a reason

 

[jwk3]

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.

 

[ko888]

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.

 

[Bofink]

Alright, going for the SuperFlower

Thanks Rugger for the good post

 

[Bofink]

Best answer selected by Bofink.

 

[Rugger]

Glad I could help - ty for the BA.