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Help to choose PSU

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  • Power Supplies
  • EVGA
  • SLI
  • Intel i5
  • Components
  • Product
Last response: in Components
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October 26, 2011 10:53:41 PM

Hi I have two EVGA superclocked 580s in SLI an i5 2500k and I'm lookin for a PSU what brands are good and is a 850watts PSU enough??

More about : choose psu

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a b ) Power supply
October 26, 2011 11:03:20 PM

antec, corsair, seasonic, nzxt, enermax, ocz all have good units in that range and yes 850w would be enough with a quality brand.
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October 26, 2011 11:09:04 PM

thanks guys
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October 26, 2011 11:11:24 PM

Best answer selected by shahrooz.
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a c 154 ) Power supply
October 26, 2011 11:30:24 PM

There really is no such thing as "good brands". That is buying by brand alone is no guarantee as to quality. Any advice about brands should be taken with a few pounds of salt :) . Which of the following do you think is true ?

Antec makes crappy PSU's
Antec makes good PSU's
Antec makes very good PSU's
Antec makes great PSU's

The answer .... all of the above. Manufacturer's are in business to make money ... the more they sell the more they make. Targeting a single market segment limits the number of customers you can sell to, limiting the amount of sales. So most vendors sell to multiple market segments:

Great PSU's
CP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Very Good PSU's
HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
CP-1000 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-500 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Good PSU's
HCP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...


Crappy PSU's
NP-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPT-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP2-550 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

The Corsair HX and AX series are generally in the very good to great range as are the Antec SG, CP, HCP and HCG series, Seasonic X Series, XFX Black Edition, Enermax M12...and no, I would not get an 850 watter as there is not a single 850 watter on nVidia's certified PSU list.

http://www.slizone.com/object/slizone_build_psu.html

900 is the absolute lowest I'd go, 1000 preferred to give you the necessary voltage stability for hi overclocks. A 1200 watter will get you a 3rd 580 in the future.

Some choices:

Antec HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Enermax Revolution 85+ 1050W http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Antec HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Corsair AX1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
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October 27, 2011 7:28:33 AM

JackNaylorPE said:
There really is no such thing as "good brands". That is buying by brand alone is no guarantee as to quality. Any advice about brands should be taken with a few pounds of salt :) . Which of the following do you think is true ?

Antec makes crappy PSU's
Antec makes good PSU's
Antec makes very good PSU's
Antec makes great PSU's

The answer .... all of the above. Manufacturer's are in business to make money ... the more they sell the more they make. Targeting a single market segment limits the number of customers you can sell to, limiting the amount of sales. So most vendors sell to multiple market segments:

Great PSU's
CP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Very Good PSU's
HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
CP-1000 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-500 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Good PSU's
HCP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...


Crappy PSU's
NP-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPT-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP2-550 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

The Corsair HX and AX series are generally in the very good to great range as are the Antec SG, CP, HCP and HCG series, Seasonic X Series, XFX Black Edition, Enermax M12...and no, I would not get an 850 watter as there is not a single 850 watter on nVidia's certified PSU list.

http://www.slizone.com/object/slizone_build_psu.html

900 is the absolute lowest I'd go, 1000 preferred to give you the necessary voltage stability for hi overclocks. A 1200 watter will get you a 3rd 580 in the future.

Some choices:

Antec HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Enermax Revolution 85+ 1050W http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Antec HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Corsair AX1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...



wow that was great thanks
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a b ) Power supply
October 27, 2011 11:24:41 AM

JackNaylorPE said:
There really is no such thing as "good brands". That is buying by brand alone is no guarantee as to quality. Any advice about brands should be taken with a few pounds of salt :) . Which of the following do you think is true ?

Antec makes crappy PSU's
Antec makes good PSU's
Antec makes very good PSU's
Antec makes great PSU's

The answer .... all of the above. Manufacturer's are in business to make money ... the more they sell the more they make. Targeting a single market segment limits the number of customers you can sell to, limiting the amount of sales. So most vendors sell to multiple market segments:

Great PSU's
CP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
SG-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Very Good PSU's
HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
CP-1000 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-500 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Good PSU's
HCP-850 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPQ-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-750 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
EA-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...


Crappy PSU's
NP-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TPT-650 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
TP2-550 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

The Corsair HX and AX series are generally in the very good to great range as are the Antec SG, CP, HCP and HCG series, Seasonic X Series, XFX Black Edition, Enermax M12...and no, I would not get an 850 watter as there is not a single 850 watter on nVidia's certified PSU list.

http://www.slizone.com/object/slizone_build_psu.html

900 is the absolute lowest I'd go, 1000 preferred to give you the necessary voltage stability for hi overclocks. A 1200 watter will get you a 3rd 580 in the future.

Some choices:

Antec HCG-900 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Enermax Revolution 85+ 1050W http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Antec HCP-1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Corsair AX1200 http://www.jonnyguru.com/modules.php?name=NDReviews&op=...


so antec (or any of those brands) have a "crappy" 850w PSU out in the market today? :sarcastic: 
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a b ) Power supply
October 27, 2011 1:21:26 PM

I always recommend reading objective PSU test reviews on the EXACT PSU model you are interested in because as JackNaylorPE mentioned, there are good and not so good PSUs sold under many of the popular brand names and you have no way to know the PSU performance or quality without actually testing it properly.

If you want to objectively, accurately and scientifically determine what PSU power is required for your Vid card and PC in both watts and 12v rail amps., the forum Utility link below will show you how easy it is to calculate this information and objectively determine which PSUs are quality built, reliable PSUs that can meet your needs. Be advised that the available 12v rail amps. is just as important as the total PSU wattage. You need both to be correct.

http://www.tomshardware.com/forum/314712-28-please-read...
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October 27, 2011 5:16:50 PM

after the best answer was selected , others have posted so much info :p 
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