be quiet seasonic or enermax more silent efficient

PSUs: The source of DC power for all components in the PC & often a big noise source.

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casebuyer
Posts: 119
Joined: Mon Jan 29, 2007 10:30 pm

be quiet seasonic or enermax more silent efficient

Post by casebuyer » Fri Feb 02, 2007 1:41 am

lc power 550 420 350 W
enermax liberty 620 400 W
enermax noisetaker 600 W
enermax galaxy 1000 W
be quiet dark power 850 750 600 530 430 W
be quiet straight power 500 450 W
silverstone 750 560 500 W
or
seasonic s12 650 W more silent and reliable

i dont need as much power as 600 W and i dont use it that way
only for graphics and rendering
and i cant buy enermax 1000 W or 750 W for they are expensive but some of these are the power supplies that are top quality and other i dont know for sure so i am asking

also you can add your options like tagan etc.

so which is more silent and reliable
Last edited by casebuyer on Sat Feb 03, 2007 6:22 am, edited 2 times in total.

kater
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Location: Poland

Post by kater » Fri Feb 02, 2007 2:36 am

hmmm, let's first ask what system will you run? it just may turn out you'll be perfectly fine with a 400w psu.

another question that comes to mind is - have you read the recommended section?

www.silentpcreview.com/article699-page1.html

kogi
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Location: sydney.au

Re: lcpower bequiet seasonic tagan enermax silence power

Post by kogi » Fri Feb 02, 2007 2:38 am

casebuyer wrote: seasonic s12 650 W more silent and reliable

i dont need as much power as 600 W and i dont use it that way
I luv seasonic S12. They DO come in 430w and 550w, you know.

casebuyer
Posts: 119
Joined: Mon Jan 29, 2007 10:30 pm

Post by casebuyer » Fri Feb 02, 2007 4:41 am

well i already read the recommended section
some power supplies here are there and some dont

this power supplies are the ones i can find right now
if i buy a 600 W one i wont use over 400 W i guess
but if seasonic s12 much more silent than an enermax 500 w i might spend some extra money on a 600 W thinking for some year later upgrades
but for example seasonic s12 400 W arent in supplies in the company i buy
i am not in america so i am asking this way
the above list of power supplies that i can buy which are only available ones

EsaT
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Location: 61.6° N, 29.5° E - Finland

Post by EsaT » Fri Feb 02, 2007 6:49 am

Yes, PSU is one part of the PC...
Now could you tell what are the parts which consume that power produced by it.

casebuyer
Posts: 119
Joined: Mon Jan 29, 2007 10:30 pm

Post by casebuyer » Fri Feb 02, 2007 9:40 am

not exactly sure because i didnt buy the system yet
but for graphics and 3d rendering a pc
with high end cpu will be one of the dual core
1-2 gb or more ram
2-3 hd
1-2 dvd
middle price gfx card
case fans

kater
Posts: 891
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Location: Poland

Post by kater » Fri Feb 02, 2007 11:13 am

you won't need anything stronger than 400w - even for a hi-end dual core cpu and a hi-end gfx card plus double hdd etc. really :) try to get seasonic s12 380 or 430.

casebuyer
Posts: 119
Joined: Mon Jan 29, 2007 10:30 pm

Post by casebuyer » Fri Feb 02, 2007 11:46 am

dear kater
i cannot buy 430 W of seasonic because
that version isnt available in my country
sorry if i couldnt clearly explain earlier
so you should pick between the versions above

also my question is if i buy a 600 W of the same brand and model instead of 450 W and if i consume the same amount like 350-400 W in each power supply does that make in noise difference

kater
Posts: 891
Joined: Thu Sep 07, 2006 11:20 pm
Location: Poland

Post by kater » Fri Feb 02, 2007 1:49 pm

oh, i must have misunderstood you - it just sounds strange that the shop carries those big power supplies and not the regular ones (big means +500w, regular means 400w)

now to your question on power consumption and noise. if your computer draws (hypothetically) 400w from a 430w psu, then this psu will be working almost at full load and will heat up a lot, and so its fan will spin very fast, so it will be loud. doesn't matter what fan this is - it will be loud.
if you put a 600w psu to work with the same system that needs 400w, it will work only at 2/3 load and so will not be so stressed and hot, so it *shouldn't* be so loud. but you must remember that 600w models usually have faster fans than 400w models and so just may be equally loud.
so practically speaking, i would expect 600w psu to work slightly quieter under 400w load, than e.g. my 430 psu.

ok, so if you have to choose one of the big models i would recommend seasonic s12 500, or - if it's available - s12 550 energy+. the enery+ models have exceptionally high efficiency which means they produce very little heat no matter the load.

other psu models i'd personally recommend (based on reviews, forum posts and friends' opinions) are: bequiet darkpower and straightpower, enermax noisetaker, silverstone.

if you still have trouble selecting the psu i'd suggest to forget about these: enermax galaxy (extra huge units which most probably be v loud).

keep in mind that today's best cpu core 2 duo needs only 65 watts under heaviest load. nvidia 7900gs needs <50 watts, 7900gtx needs 85 watts. 8800gtx draws about 140 w, ati x1900xtx can draw 130w. single hdd needs 10w. and i'm giving here safe estimates so typically your system will need less power because there are practically no situation where it is loaded so heavily.

good luck choosing the psu and after you get it let us know if it's ok :)

nici
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Post by nici » Fri Feb 02, 2007 2:13 pm

Im running an overclocked dual core opteron and 7900GTX off a passive 300W silverstone PSU with plenty of headroom, a C2D would draw even less. It draws 225W at most from the wall, not even that much when gaming.

There is no rule that says a PSU working at 2/3 of it's capacity runs any cooler than a PSU running nearly full capacity. That depends entirely on the effiency curve, if both the PSUs efficiency peak is right at the top then the lower power version will produce less heat than a 600w unit at 2/3. If i ran my system off a 600W unit, chances are it would be less efficient than my current PSU at 110-225W load and therefore consume more power.

casebuyer
Posts: 119
Joined: Mon Jan 29, 2007 10:30 pm

Post by casebuyer » Sat Feb 03, 2007 12:20 am

well first of all thanks for your reply
for 400 W 600 W comparison i assumed the same model of same brand so efficiency curve should be near

they did bring lower W models but they all solo out
i am trying to find from others shops if they have 500 W model and found 1 store but they are not giving any details like energy+ or something all they say is s12 500 W

and i know most of these power supplies good
at the hand of the distributer of seasonic the miminum is 650 W
so my question is like buying a 500 W enermax or 500 W be quiet or 650 W seasonic because i will not consume as much as 500 or 600 W

i read some more reviews and enermax noisetaker too seems cool on both under load and silence

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