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Offbeat => Hardware / Peripherals => Topic started by: Doc-Overclock on April 20, 2010, 10:20:39 pm

Title: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 20, 2010, 10:20:39 pm
Since this is a very common question asked on GLK i think its appropriate to post this

teh Albert  of computertv explains it all

How to Choose the Right Power Supply (http://www.youtube.com/watch?v=G8BMfSkqUp4&playnext_from=TL&videos=wPMBye2_dFs#ws)
Title: Re: How to Choose the Right Power Supply
Post by: msj on April 20, 2010, 11:57:22 pm
good info  (Y) (Y) (Y)
Title: Re: How to Choose the Right Power Supply
Post by: RZ on April 21, 2010, 12:10:54 am
Thanks man! That was really useful :)
Title: Re: How to Choose the Right Power Supply
Post by: üb3r n00b! on April 21, 2010, 03:17:18 am
corsair ftw :D
Title: Re: How to Choose the Right Power Supply
Post by: girigoris on April 21, 2010, 07:30:39 am
Thanx for the info (Y) (Y)
Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 21, 2010, 12:53:22 pm
your welcome!!! and for more  guys who dont know where all the plugs fit in a mother board and how to install in properly  teh Albert explains it again

How to install a Power Supply (http://www.youtube.com/watch?v=NaA1oWrte5k&playnext_from=TL&videos=RxegfX640aE#ws)
Title: Re: How to Choose the Right Power Supply
Post by: .::[email protected]_47::. on April 21, 2010, 04:05:31 pm
Now heres some info that would come in handy. Thanks for the post bud!
Title: Re: How to Choose the Right Power Supply
Post by: RZ on April 21, 2010, 04:34:54 pm
This looks like sticky material to me :D
Title: Re: How to Choose the Right Power Supply
Post by: Hammer on April 21, 2010, 04:46:36 pm
Thnx dude great info (Y)
Title: Re: How to Choose the Right Power Supply
Post by: .::[email protected]_47::. on April 21, 2010, 05:16:05 pm
This looks like sticky material to me :D
+1
Title: Re: How to Choose the Right Power Supply
Post by: RZ on April 21, 2010, 05:35:09 pm
I'm gonna wait a bit in case he wants to add any more videos. Expect topic to be stickied soon :)
Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 21, 2010, 05:44:47 pm
well since you guys wanted more vids on this topic here is a more indepth explanation of powe supplies

heres jeremy blum the owner of ultimatecomputers.net explaining all .... i personally know him and he and hez brother (david blum) has taught me all i know about computers i hope you guys find this usefull...

TechBits 9 - Power Supplies Demystified (Part 1 of 2) (http://www.youtube.com/watch?v=LYpEovYeNwA#ws)

TechBits 9 - Power Supplies Demystified (Part 2 of 2) (http://www.youtube.com/watch?v=Rg65kx6uwl4&feature=PlayList&p=C28F4E77CE490AB6&playnext_from=PL#ws)

Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 21, 2010, 05:58:01 pm
all the questions you have about power supply rails by rodney renolds of 3Dgameman.com

#74 - Question/Answer: Single vs Multiple Rail PSUs (http://www.youtube.com/watch?v=4EtNTjrX8Ug#)
Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 21, 2010, 06:06:15 pm
heres more on the topic

#80 - Question/Answer: Selecting the Correct Power Supply (http://www.youtube.com/watch?v=zP2AFTYtFhQ&feature=channel#)

sorry for the multi post but the previous post was about rails so thats why i posted this vid separately
Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on April 22, 2010, 12:28:48 pm
more articles on power supply's

The Power Supply Matters!
http://www.tomshardware.com/reviews/intel-atom-efficiency,2069-5.html (http://www.tomshardware.com/reviews/intel-atom-efficiency,2069-5.html)


Proper Sizing For Power Supplies
http://www.tomshardware.com/reviews/pc-power-supplies,1664-7.html (http://www.tomshardware.com/reviews/pc-power-supplies,1664-7.html)
Title: Re: How to Choose the Right Power Supply
Post by: RZ on April 26, 2010, 03:58:34 pm
Topic stickied :)
Title: Re: How to Choose the Right Power Supply
Post by: ozone on April 27, 2010, 05:10:52 pm
Really Useful info  (Y)
Title: Re: How to Choose the Right Power Supply
Post by: stormtrooper on July 26, 2010, 08:25:33 pm
Now heres some info that would come in handy. Thanks for the post bud!
true true thanks for the post mates.. :) cheers..
Title: Re: How to Choose the Right Power Supply
Post by: Herby on December 22, 2010, 02:56:13 pm
Namaste.

Keep in mind that AMD and nVidia overstate the PSU requirements for their cards by a lot. When buying a PSU, look into actual power consumption tests instead of going by what the manufacturer says as you'll be able to get more realistic figures and not waste money on a PSU which you'll never use fully.

For example, even with a GTX580, you'll be able to run it with a good 500W PSU no problems, as the 580 only pulls 451 watts (http://www.techspot.com/review/337-asus-geforce-gtx-580/page11.html) under Furmark. So a 500W will have a safety margin of around 10% as well. Remember though, that this is with the 580's limiter enabled, if you disable it a 500W won't cut it.

Should help you guys save some cash.
Title: Re: How to Choose the Right Power Supply
Post by: rat3123 on December 22, 2010, 03:21:19 pm
Hope this helps too

http://educations.newegg.com/tool/psucalc/index.html (http://educations.newegg.com/tool/psucalc/index.html)
Title: Re: How to Choose the Right Power Supply
Post by: xXx$avage_87xXx on March 09, 2011, 03:05:33 pm
corsair roxx
Title: Re: How to Choose the Right Power Supply
Post by: xXx$avage_87xXx on March 09, 2011, 03:13:43 pm
also try this online tool http://extreme.outervision.com/psucalculatorlite.jsp (http://extreme.outervision.com/psucalculatorlite.jsp)
Title: Re: How to Choose the Right Power Supply
Post by: Dark X on May 08, 2011, 02:23:00 pm
Anybody here has a list or something like that which shows the UPS  that should select according to Wattage of your PSU? =\
Title: Re: How to Choose the Right Power Supply
Post by: Zaffran on May 08, 2011, 07:26:28 pm
Anybody here has a list or something like that which shows the UPS  that should select according to Wattage of your PSU? =\
There's little choice in UPSs, so it's either 650 VA or 1200 VA in most cases. A good 650 VA UPS should be ok for a load of upto 400W, but for anything between that and 800W load, use a 1200 VA.

One more thing to remember is that efficiency of your PSU matters here. Also, you need to know how much your system consumes and not how much your PSU can deliver.

If your system consumes 300W and your PSU is 75% efficient, then load on the UPS will be approximately 400W. If your system consumes 450W and you have a 90% efficient PSU, load on the UPS will be approximately 500W, and so on.
Title: Re: How to Choose the Right Power Supply
Post by: muharizj on May 09, 2011, 06:48:51 am
Here's an interesting article from Tom's about choosing [email protected] psu's.

http://www.tomshardware.com/reviews/low-cost-psu-pc-power-supply,2862.html (http://www.tomshardware.com/reviews/low-cost-psu-pc-power-supply,2862.html)

the psu's die a pretty horrible death even as low as 50% max load
Title: Re: How to Choose the Right Power Supply
Post by: Dark X on May 09, 2011, 07:39:34 am
There's little choice in UPSs, so it's either 650 VA or 1200 VA in most cases. A good 650 VA UPS should be ok for a load of upto 400W, but for anything between that and 800W load, use a 1200 VA.

One more thing to remember is that efficiency of your PSU matters here. Also, you need to know how much your system consumes and not how much your PSU can deliver.

If your system consumes 300W and your PSU is 75% efficient, then load on the UPS will be approximately 400W. If your system consumes 450W and you have a 90% efficient PSU, load on the UPS will be approximately 500W, and so on.

So if the PSU is around 1500W with 80% or 1200W with 80% efficiency, what would be the UPS VA?
Title: Re: How to Choose the Right Power Supply
Post by: EGS on May 09, 2011, 11:16:21 pm
Their is nothing like 80% efficiency needs a higher UPS VA. Most UPS provide .6 and when it goes to higher level it is .7 this is the factor. Since you are using a 1000W PSU and it may be 85+ efficiency does not mean its using the 1000W. You need to know the exact power consumed. If the consumed Power is within the 0.6 load of the UPS its sufficient.

 
Title: Re: How to Choose the Right Power Supply
Post by: Zaffran on May 10, 2011, 12:23:37 am
Their is nothing like 80% efficiency needs a higher UPS VA. Most UPS provide .6 and when it goes to higher level it is .7 this is the factor. Since you are using a 1000W PSU and it may be 85+ efficiency does not mean its using the 1000W. You need to know the exact power consumed. If the consumed Power is within the 0.6 load of the UPS its sufficient.

  

This is exactly what I said:

"Also, you need to know how much your system consumes and not how much your PSU can deliver"

Anyway, fact is that assuming a fixed level of load imposed on a PSU by the system components, lower the efficiency, higher the power drawn at the socket, so higher the load on the UPS. So when considering the load on the UPS, the power drawn at the socket by the system is what matters.

So the main deciding factors in deciding what the load on the UPS is are:
1) Total power consumed by system components
2) Efficiency of the PSU

Calculating what the UPS is capable of delivering is the other side of the coin. And With a good UPS, 650VA is usually capable of upto 400W, and a 1200VA upto 800W, correct?

So if the PSU is around 1500W with 80% or 1200W with 80% efficiency, what would be the UPS VA?

I'm not too familiar with the models above 1200VA and their pricing, As for what UPS to look for, do the math yourself :)
Title: Re: How to Choose the Right Power Supply
Post by: Dark X on May 10, 2011, 06:23:11 pm

I'm not too familiar with the models above 1200VA and their pricing, As for what UPS to look for, do the math yourself :)
Roger that  =)
Title: Re: How to Choose the Right Power Supply
Post by: db on May 11, 2011, 09:10:30 am
can a generic 450W PSU handle a 5670?
Title: Re: How to Choose the Right Power Supply
Post by: gayankap on May 11, 2011, 01:40:16 pm
can a generic 450W PSU handle a 5670?

depends on your other hardware specifications ,  :idea:

but normally ya such a psu can handle it since it doesnt need 12 v rails  :yes:
Title: Re: How to Choose the Right Power Supply
Post by: EGS on May 11, 2011, 10:38:08 pm
The word generic means a lot when u go in search of a PSU @ Unity. On my understanding its a PSU with 450 WORDED Sticker (on any psu. )
Title: Re: How to Choose the Right Power Supply
Post by: db on May 11, 2011, 11:53:55 pm
The word generic means a lot when u go in search of a PSU @ Unity. On my understanding its a PSU with 450 WORDED Sticker (on any psu. )

yes thats exactly what it mean but not from unity it came at the purchase of the rig

depends on your other hardware specifications ,  :idea:

but normally ya such a psu can handle it since it doesnt need 12 v rails  :yes:

using a DVD ROM + 2 HDD's thats abt it so u think it can? any big risks there?
Title: Re: How to Choose the Right Power Supply
Post by: gayankap on May 12, 2011, 06:36:35 am
using a DVD ROM + 2 HDD's thats abt it so u think it can? any big risks there?

whats the processor whats the mobo u using with it ? well most unbranded psus say its 450 w in the sticker but actually they provide a very lower wattage inside . like a 450 w sticker attached unbranded psu may provide 300 w from inside . to be on the safe side i guess you should buy a branded psu .
Title: Re: How to Choose the Right Power Supply
Post by: Zer0 on May 12, 2011, 08:39:43 am
yes thats exactly what it mean but not from unity it came at the purchase of the rig

if it was barclays of TZ their PSU's are generally good, with a true output of 260W+, which is good enough for a HD5670.
Title: Re: How to Choose the Right Power Supply
Post by: db on May 12, 2011, 09:50:22 am
hmm ya i guess so its only better i go for a psu from axle, using a core2duo and a g31 mobo with the psu
Title: Re: How to Choose the Right Power Supply
Post by: Kasun™ on May 13, 2011, 10:25:52 pm
Great Article on Tom's Hardware

Who's Who In Power Supplies, 2011: Brands Vs. Manufacturers (http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913.html)
Title: Re: How to Choose the Right Power Supply
Post by: Doc-Overclock on May 13, 2011, 10:31:36 pm
good article +1 for sharing
Title: Re: How to Choose the Right Power Supply
Post by: EGS on May 13, 2011, 11:48:54 pm
Great Article on Tom's Hardware

Who's Who In Power Supplies, 2011: Brands Vs. Manufacturers (http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913.html)

You r a Genie, to bring this at the correct time, This shows who's PSU is made by whom.

The local top of the hit PSU Cooler Master is not their product, but made for them, Some of the In Win PSU are made by FSP for them. Foxconn does not make their PSU. Same way Gigabyte does not make their own PSU.

That does not mean their PSU r comparatively lower in quality, But their price can be higher, since they hv to subcontract and that too based on the volume they offer each maker.

Products such as Seasonic, FSP are the main manufacturers for PSU, same way you also get guys like HEC, Top Power, KME making PSU for others.

We did not see the Power Logic PSU in this list, you guys who say its a good psu need 2 study more about it.
Title: Re: How to Choose the Right Power Supply
Post by: xnemesis21 on June 10, 2011, 12:54:23 am
I had no clue thanks!
Title: Re: How to Choose the Right Power Supply
Post by: HardwareDen on July 23, 2012, 10:39:58 am
use this to calculate your power requirement http://extreme.outervision.com/psucalculatorlite.jsp (http://extreme.outervision.com/psucalculatorlite.jsp)
Title: Re: How to Choose the Right Power Supply
Post by: Mutant_Guy on July 31, 2012, 09:24:05 am
1) Get from a known Brand
Antec
BeQuiet
Cooler Master 
Corsair
Cougar
Enermax
FSP
Kingwin
Seasonic
SilverStone
SparkleThortech

2) Make sure It has Power Factor Correction
Active PFC or Passive PFC.
Active PFC is the best and it is bit expensive but worth the price

3) Check how much power it can provide in 12V Rail don't get fooled by looking the Total power.

4) If you are concern about power check the 80Plus Ratings

5) Calculate your Usage and get a PSU double the amount of Power.
Eg: if your usage is 300W get 600W PSU
Psu work efficiently in near 50% power draw
Title: Re: How to Choose the Right Power Supply
Post by: captain|zulfar on July 31, 2012, 10:33:10 am
Antec
BeQuiet
Cooler Master 
Corsair
Cougar
Enermax
FSP
Kingwin
Seasonic
SilverStone
SparkleThortech

In Win (Commander Series)
Evga (Only 1200 W Is Released At The Moment)
Title: Re: How to Choose the Right Power Supply
Post by: Delux on August 09, 2012, 05:19:27 am
check out people who have the same sort of rig, and see what psu they use. and get a good brand. easy
Title: Re: How to Choose the Right Power Supply
Post by: earthling-sl on October 26, 2012, 09:43:08 pm
u guys also should take a look at this article..very en-lighting   ;)

Why 80 PLUS® is Irrelevant to You When Buying a PSU - http://gamer.lk/index.php/topic,19335.new.html#new (http://gamer.lk/index.php/topic,19335.new.html#new)
Title: Re: How to Choose the Right Power Supply
Post by: Anusha on March 19, 2013, 07:53:37 am
u guys also should take a look at this article..very en-lighting   ;)

Why 80 PLUS® is Irrelevant to You When Buying a PSU - http://gamer.lk/index.php/topic,19335.new.html#new (http://gamer.lk/index.php/topic,19335.new.html#new)
For a normal rig, I would agree with you. But there are certain instances where an 80Plus gold could save some bucks over a 80Plus bronze in the long run.
http://www.anushand.com/2013/03/is-80-plus-rating-of-power-supply-worth.html (http://www.anushand.com/2013/03/is-80-plus-rating-of-power-supply-worth.html)
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on March 19, 2013, 02:38:10 pm
My idea is 80 Plus is relevant........But not a "must"........
There are critical must have things like "voltage regulation" , "ripple noise"...........etc....
Than that 80Plus certifications (like bronze,silver,gold,platinum)..........
As "Anusha" said, for a more power hungry machine can save some money buy using better efficient PSU ..........

Another thing-
PSUs with higher 80Plus certifications(like bronze,silver,gold,platinum) usually have better quality than others........(to get better efficiency they have to use premium quality components).....
So you can get a better idea about the built quality about the specific PSU by the 80Plus certification........




Title: Re: How to Choose the Right Power Supply
Post by: Anusha on March 19, 2013, 02:50:18 pm
My idea is 80 Plus is relevant........But not a "must"........
There are critical must have things like "voltage regulation" , "ripple noise"...........etc....
Than that 80Plus certifications (like bronze,silver,gold,platinum)..........
As "Anusha" said, for a more power hungry machine can save some money buy using better efficient PSU ..........

Another thing-
PSUs with higher 80Plus certifications(like bronze,silver,gold,platinum) usually have better quality than others........(to get better efficiency they have to use premium quality components).....
So you can get a better idea about the built quality about the specific PSU by the 80Plus certification........
But there are crappy PSUs with 80Plus certification. Its still a good idea to check reviews on jonnyguru and see if the PSU concerned has any particular problems.
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on March 19, 2013, 03:00:06 pm
But there are crappy PSUs with 80Plus certification. Its still a good ices to check reviews on jonnyguru and see if the PSU concerned has any particular problems.
Definitely!.................
Title: Re: How to Choose the Right Power Supply
Post by: EGS on March 19, 2013, 10:12:52 pm
But there are crappy PSUs with 80Plus certification. Its still a good idea to check reviews on jonnyguru and see if the PSU concerned has any particular problems.

This is the Main thing. Which many fail to understand. Some say 80+ is just an Ad it may or may not but their are some in the market who r misusing it. So Reviews are very important.
Title: Re: How to Choose the Right Power Supply
Post by: earthling-sl on March 19, 2013, 10:27:37 pm
Another thing-
PSUs with higher 80Plus certifications(like bronze,silver,gold,platinum) usually have better quality than others........(to get better efficiency they have to use premium quality components).....
So you can get a better idea about the built quality about the specific PSU by the 80Plus certification........

Nope WRONG... some just cheat their way in to getting the 80+ certificate.. meaning the PSU they send to get the 80+ certificate to ECOS may be beefed up & can have hi quality components than the actual PSU that they will be selling to the consumer market.... components can be hi quality to get the efficiency but the ripple noice they can output can be deadly since some manufacturers doesn't giv a shit (Ex-  Thortech PSUs)

The safest bet is to get PSUs from trusted & known brnads that have a gud history of producing God quality PSUs.. Also read a lot of reviews & feedback of the PSU Range / Brand u r planning to buy

This is the Main thing. Which many fail to understand. Some say 80+ is just an Ad it may or may not but their are some in the market who r misusing it. So Reviews are very important.

Agreed
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on March 19, 2013, 11:30:53 pm
Nope WRONG... some just cheat their way in to getting the 80+ certificate.. meaning the PSU they send to get the 80+ certificate to ECOS may be beefed up & can have hi quality components than the actual PSU that they will be selling to the consumer market.
I am not mentioned about PSUs with cheated 80Plus certification......

components can be hi quality to get the efficiency but the ripple noice they can output can be deadly since some manufacturers doesn't giv a shit (Ex-  Thortech PSUs)
Correct!........
The safest bet is to get PSUs from trusted & known brnads that have a gud history of producing God quality PSUs.. Also read a lot of reviews & feedback of the PSU Range / Brand u r planning to buy
That's the best way to choose a better PSU...............
Title: Re: How to Choose the Right Power Supply
Post by: EGS on March 19, 2013, 11:33:04 pm
For a normal rig, I would agree with you. But there are certain instances where an 80Plus gold could save some bucks over a 80Plus bronze in the long run.
http://www.anushand.com/2013/03/is-80-plus-rating-of-power-supply-worth.html (http://www.anushand.com/2013/03/is-80-plus-rating-of-power-supply-worth.html)

This is a Very Good Report for a Person who did not know about PSU Ratings & the power consumption and what he pays end of the month to the Electricity Board,  Its worth reading.

Also to add to the previous statement on 80+, Most known and popular makers of PSU dont try to mess around with the their 80+ Certification by sending a good unit for testing and sending out to the market a lower grade, since this can spoil their reputation. But their are some small timers who get their PSU made by others can do this. Can obtain the certification and then get the same PSU done by others at a lower cost and use the certification to promote their product. Many un suspecting users can fall pray to it. It can be buyers or even sellers.
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on March 19, 2013, 11:55:38 pm
This is a Very Good Report for a Person who did not know about PSU Ratings & the power consumption and what he pays end of the month to the Electricity Board,  Its worth reading. 

Correct!............
But there are few people in SL who uses more than 500w and I do not think that do much difference on electricity bill........(Not sure)..........
But it can affect for the thermals (I have experienced with my PC)...............

Also to add to the previous statement on 80+, Most known and popular makers of PSU dont try to mess around with the their 80+ Certification by sending a good unit for testing and sending out to the market a lower grade, since this can spoil their reputation. But their are some small timers who get their PSU made by others can do this. Can obtain the certification and then get the same PSU done by others at a lower cost and use the certification to promote their product. Many un suspecting users can fall pray to it. It can be buyers or even sellers.
For real PSU manufacturers...........that is over 99% valid...........
But for others........................who knows!...........(except reputed brands)...............
Title: Re: How to Choose the Right Power Supply
Post by: Anusha on March 20, 2013, 05:25:31 am
Correct!............
But there are few people in SL who uses more than 500w and I do not think that do much difference on electricity bill........(Not sure)..........
Yes that's why I said for a normal rig or even a single card high end gaming rig that doesn't use over 400W while gaming or doing heavy work, there is no point in investing money on anything over a 80Plus bronze PSU. But again, price difference is the governing factor. Inhave no idea about the PSU prices in SL.
Title: Re: How to Choose the Right Power Supply
Post by: Mutant_Guy on March 20, 2013, 08:47:11 am
I'm tired of power supplies...
Title: Re: How to Choose the Right Power Supply
Post by: gayankap on February 12, 2014, 02:53:51 pm
anybody know for how much a 2nd hand seasonic x650 (650w) gold modular psu goes for , and that's with warranty from redline technologies ...
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on February 12, 2014, 07:37:45 pm
anybody know for how much a 2nd hand seasonic x650 (650w) gold modular psu goes for , and that's with warranty from redline technologies ...
Brandnew X650 is around 22.5K at Redline , So a used one will cost around 15k , I guess.

I suppose that you came here after a long time.
And Why are you looking for another x650?
Title: Re: How to Choose the Right Power Supply
Post by: gayankap on February 12, 2014, 08:40:52 pm
Brandnew X650 is around 22.5K at Redline , So a used one will cost around 15k , I guess.

I suppose that you came here after a long time.
And Why are you looking for another x650?

ya bro after a long time :) left gaming couple of months back but everything changed back to the previous state after i brought that 280x he he :P ...

actually not trying to buy another psu :P - thought of selling the one i'm using at the moment and going for something with 750w ... hmmm ...
Title: Re: How to Choose the Right Power Supply
Post by: ryanex on February 12, 2014, 09:06:52 pm
ya bro after a long time :) left gaming couple of months back but everything changed back to the previous state after i brought that 280x he he :P ...

actually not trying to buy another psu :P - thought of selling the one i'm using at the moment and going for something with 750w ... hmmm ...
let me know if you are selling the 650 ;)
Title: Re: How to Choose the Right Power Supply
Post by: MPAD on February 12, 2014, 09:12:06 pm
ya bro after a long time :) left gaming couple of months back but everything changed back to the previous state after i brought that 280x he he :P ...

actually not trying to buy another psu :P - thought of selling the one i'm using at the moment and going for something with 750w ... hmmm ...
Why 750w? It is only 100w more than the 650w.