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Best Gaming and Overclocker PSU for not more than $90 ?

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  • Cooler Master
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Last response: in Components
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March 3, 2011 2:58:31 AM

So, i have an C2D E4400 processor and an Asus P5LD2-X mobo and im planning to buy an MSI GTX 460 Hawk Talon Attack and a Kingston HyperX T1 DDR2 4GB kit, later i would do SLI and buy an i7 950 or an 2500K + an Asus Rampage III Extreme or a good LGA 2011 Mobo, and finally a good 6GB DDR3 2000MHZ kit with less than CAS 8, the only thing i haven't choosed yet it's the PSU, i was thinking in those ones:

Cooler Master GX Series RS750-ACAAE3-US 750W

Antec EarthWatts EA650 650W

Cooler Master GX Series RS650-ACAAE3-US 650w

Cooler Master RS700-PCAA-E3 eXtreme Power Plus 700W

Seasonic SS-650HTBULK Energy+ 650W

Antec TP-650 650W

Antec Trio 650W

OCZ ModXStream Pro OCZ700MXSP 700W

CORSAIR Enthusiast Series CMPSU-650TX 650W

Antec NEO ECO 620C 620W Continuous Power

OCZ OCZ750FTY 750W

OCZ EliteXStream OCZ800EXS-B 800W

OCZ StealthXstream II OCZ700SXS2 700W

Which one would be the best for gaming and for overclock ?

Also, how do you know if the Watts of a PSU are real ?

More about : gaming overclocker psu

a c 297 ) Power supply
March 3, 2011 3:44:06 AM

Most of those are pretty good units, they are all continuously rated so thats not really an issue.

Are you buying off of newegg? If so take a look at the XFX 650W units, they are quite good too, if those are the only real options in your area i would go for the Antec TP-650 or Corsair 650TX, either one would be fine for 2 GTX 460s.
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March 3, 2011 4:01:28 AM

hunter315 said:
Most of those are pretty good units, they are all continuously rated so thats not really an issue.

Are you buying off of newegg? If so take a look at the XFX 650W units, they are quite good too, if those are the only real options in your area i would go for the Antec TP-650 or Corsair 650TX, either one would be fine for 2 GTX 460s.


I forgot to mention that later i would buy an i7 950 or an 2500K + an Asus Rampage III Extreme or a good LGA 2011 Mobo, and finally a good 6GB DDR3 2000MHZ kit with less than CAS 8, so those two will support the new rig ?

BTW: I had seen many very bad reviews of that XFX 650W it has dead for more than 4 guys in the Newegg reviews.

Besides, you didn't answered the question about how to figure about the real Watts :D 
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March 3, 2011 4:14:55 AM

forget about watts you need atleast 50amps on the 12 volt rail, the antec is a no brainer it will run 3 of gtx 460s in sli no problem.

corsair 650 = 52a on 12v rail (one rail)
antec 650 = 22+22+25+25=94amps on 12v rail!!!! (4 rails)

why 12v rail?
because the CPU, gfx card and other components use that, hell you can run 3 gtx 480s on the antec (source) (3 gtx 480s require 80amps on 12v rail)

I say if you have the cash right now, IMMEDIATELY buy the antec

Hope I helped
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March 3, 2011 4:24:52 AM

razor_gt said:
forget about watts you need atleast 50amps on the 12 volt rail, the antec is a no brainer it will run 3 of gtx 460s in sli no problem.

corsair 650 = 52a on 12v rail (one rail)
antec 650 = 22+22+25+25=94amps on 12v rail!!!! (4 rails)

why 12v rail?
because the CPU, gfx card and other components use that, hell you can run 3 gtx 480s on the antec (source) (3 gtx 480s require 80amps on 12v rail)

I say if you have the cash right now, IMMEDIATELY buy the antec

Hope I helped


You're wrong mate..
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a c 144 ) Power supply
March 3, 2011 1:26:19 PM

razor_gt said:

corsair 650 = 52a on 12v rail (one rail)
antec 650 = 22+22+25+25=94amps on 12v rail!!!! (4 rails)

:pfff: 
Think about what you are saying. You are saying that a 650 watt Antec PSU can produce 1128 watts (12 volts X 94 amps). That does not pass the "Does this make sense" test.

How to read PSU labels:
http://www.newegg.com/Product/ImageGallery.aspx?CurImag...

You cannot simply add up the total maximum outputs of the 12 volt rails. Look at the two lines below the box containing the PSU ratings. The second line says that the total 12 volt current is 54 amps. That is nominally better that the Corsair ( 54 amps vs. 52 amps).

I'd prefer either the Corsair or Seasonic.
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March 3, 2011 2:29:20 PM

jsc said:
:pfff: 
Think about what you are saying. You are saying that a 650 watt Antec PSU can produce 1128 watts (12 volts X 94 amps). That does not pass the "Does this make sense" test.

How to read PSU labels:
http://www.newegg.com/Product/ImageGallery.aspx?CurImag...

You cannot simply add up the total maximum outputs of the 12 volt rails. Look at the two lines below the box containing the PSU ratings. The second line says that the total 12 volt current is 54 amps. That is nominally better that the Corsair ( 54 amps vs. 52 amps).

I'd prefer either the Corsair or Seasonic.


So, he was totally wrong.. then how i can know how many amps had a PSU by myself, tbw, he said that the Watts do not really matters, is that true ?

Would this be 43 amps in 12v or not ?

Input Current - 10A Output - +3.3@24A,+5V@24A,+12V1@19A,+12V2@19A,+12V3@19A,-12V@0.8A,+5VSB@3.0A

Those are the amps of the Antec Trio 650W SLI TP-3-650 in Ebay.
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a c 297 ) Power supply
March 3, 2011 5:13:38 PM

The stated total wattage of the unit doesnt really matter, but the wattage provided by the 12V rail does (watts = volts * amps). Since most units have a single 12V source you can rarely add the rails together, their ratings are just the max that each one will allow before it shuts down the unit, but you cannot load them all up to max the source cannot keep up with that.

To tell what the max output on the 12V rail is always look at the sticker, for the TP-3-650 i found a picture of the label on newegg

You will see towards the bottom of the label it says that the max load of 12V1, 12V2, and 12V3 is 52A or 624W. If you look through the pictures on newegg for the TP-650 you will see that it says that the max load for the 4 rails is 54A (648W) NOT 94A like adding them all together would imply, that really shouldnt have passed the "Does this make sense?" check.
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March 3, 2011 10:53:32 PM

hunter315 said:
The stated total wattage of the unit doesnt really matter, but the wattage provided by the 12V rail does (watts = volts * amps). Since most units have a single 12V source you can rarely add the rails together, their ratings are just the max that each one will allow before it shuts down the unit, but you cannot load them all up to max the source cannot keep up with that.

To tell what the max output on the 12V rail is always look at the sticker, for the TP-3-650 i found a picture of the label on newegg
http://images10.newegg.com/NeweggImage/productimage/17-371-001-14.jpg
You will see towards the bottom of the label it says that the max load of 12V1, 12V2, and 12V3 is 52A or 624W. If you look through the pictures on newegg for the TP-650 you will see that it says that the max load for the 4 rails is 54A (648W) NOT 94A like adding them all together would imply, that really shouldnt have passed the "Does this make sense?" check.


And how do you convert from Ampers to Watts ?
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Best solution

a c 297 ) Power supply
March 3, 2011 10:54:55 PM

On the 12V rail, if you see its got a max of 52A, 52A * 12V = 624W since a watt is one volt times one ampere.
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March 4, 2011 12:09:57 AM

hunter315 said:
On the 12V rail, if you see its got a max of 52A, 52A * 12V = 624W since a watt is one volt times one ampere.


You helped my doubts so much, im sorry, i can't give you the best answer award because i had gave it before and i asked a mod to undo that, but now it's seems i can't choose it again, but really thank you ;) 
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a b ) Power supply
March 4, 2011 12:12:25 AM

Do you not see the option to select best answer?
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a c 297 ) Power supply
March 4, 2011 12:17:45 AM

In the CPU subforum it still shows itself as having been solved so it may be a disagreement in the system since it doesnt think it has a best answer in the thread.
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a b ) Power supply
March 4, 2011 12:23:43 AM

You're right. Interesting. Removing the previous best answer unmarked it here, but not in the subforum.

Well, I can still select a best answer for you if you'd like me to.
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March 4, 2011 12:36:29 AM

aford10 said:
You're right. Interesting. Removing the previous best answer unmarked it here, but not in the subforum.

Well, I can still select a best answer for you if you'd like me to.

Select this one
Quote:
On the 12V rail, if you see its got a max of 52A, 52A * 12V = 624W since a watt is one volt times one ampere.


Final question, what has different a modular PSU with a non-modular one ?
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a b ) Power supply
March 4, 2011 12:37:11 AM

Best answer selected by aford10.
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a c 297 ) Power supply
March 4, 2011 12:38:38 AM

On a modular PSU not all of the cables are hardwired, you can remove the ones you dont want/need, generally the 24 pin main and the CPU power cable and usually at least one PCI-e cable are hard wired, the rest are optional so you can reduce clutter in your case, this is especially useful for larger PSUs like 750W units that would have a large number of Molex and SATA connectors that you dont usually need.

Edit: Thanks for helping him out Aford
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a b ) Power supply
March 4, 2011 12:38:41 AM

AngelOfDarkness said:
Final question, what has different a modular PSU with a non-modular one ?


Are you asking the difference between modular and non-modular power supplies?
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a b ) Power supply
March 4, 2011 12:41:31 AM

@Angel
Ah, I see Hunter beat me to it. Hunter is correct on the difference.

@Hunter
No problem :) 
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March 4, 2011 12:41:53 AM

So a modular one will be better for OC because the flow of air ?
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a c 297 ) Power supply
March 4, 2011 12:43:09 AM

It helps the air flow a little, but mostly it just reduces clutter in the case which is a pain to work with, especially in cases with top mounted PSUs which cause all the wires to hang down in the way of getting to a lot of things.
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March 4, 2011 12:44:38 AM

Well, im all done, thanks to all of you, and specially hunter315 and aford10.
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a b ) Power supply
March 4, 2011 12:45:07 AM

It will help some. But I don't think it makes that much of a difference with the air flow.

The biggest advantage, is with the cable management. If you don't need all the cables, you don't have to tie them up or hide them.
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a c 77 ) Power supply
March 4, 2011 12:47:02 AM

aford10 said:
The biggest advantage, is with the cable management. If you don't need all the cables, you don't have to tie them up or hide them.

^+1... My thinking is with a modular PSU, you get better cable management, which in turns helps improve air flow (more driven by case / fans though) and results in better temps, in the end. :D 
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a b ) Power supply
March 4, 2011 12:54:50 AM

Quote:
There's a new invention its called cable ties


You don't need to tie them up if they aren't there.
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a c 77 ) Power supply
March 4, 2011 12:57:56 AM

aford10 said:
You don't need to tie them up if they aren't there.

:lol: 

Or you can just use a benchtop setup and forget about cable management all together :lol: 
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a b ) Power supply
March 4, 2011 1:00:37 AM

Isn't that the truth. :) 
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a c 297 ) Power supply
March 4, 2011 1:22:50 AM

The TP-650 is modular, i would take it over the ModXStream 700W unit.

Modular units dont necessarily overclock better, that is still reliant on the quality of the power coming out of the unit, they can slightly reduce your temps but its not a ton.

That article is correct, modular connectors do lead to some inefficiency, about as much as 2 feet of wire which is pretty minimal, there are many extremely efficient modular units, the first to 80+ platinum PSUs that jonnyguru has reviewed are modular so it really doesnt matter much.
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March 4, 2011 1:33:39 AM

aford10 said:
There is a great deal on this OCZ 550w PSU right now. If you're only using a gtx460, it would do nicely.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If you really want a beefier PSU, this Corsair 750w is a nice one. With this promo code, you can get an additional 10% off. EMCKGKG26
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


I don't really know if paying $56 more for 50w worth it, that code it's just for that PSU or for any product ?
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March 4, 2011 1:34:06 AM

Quote:
OP are you going the sli route?


Yeah
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March 4, 2011 1:41:36 AM

Yeah i know it rocks but it's hell too expensive since i don't want to spend more than $90 and the one from OCZ it's at $70.

BTW: What about the code you gave me ?
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March 4, 2011 1:55:10 AM

Nah, it's more expensive than the OCZ one and it's worse..
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a b ) Power supply
March 4, 2011 2:05:15 AM

The code that I listed is good for 10% off any corsair PSU. It expires on the 9th.
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March 4, 2011 2:07:24 AM

aford10 said:
The code that I listed is good for 10% off any corsair PSU. It expires on the 9th.


And how do you use it ?
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a c 297 ) Power supply
March 4, 2011 2:08:33 AM

Actually the TP-650 is better and more powerful than the ModXStream Pro 700W, look at the labels not the rated wattage, the OCZ unit has 552W combined between its 12V rails(46A) the TP-650 has 54A between its 12V rails making it significantly more powerful even though the OCZ is rated 50W higher the TP-650 can actually deliver significantly more power.

When you are making a purchase off of newegg, at the bottom of your shopping cart there is a place for promo codes, you would put it in there.
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a b ) Power supply
March 4, 2011 2:08:37 AM

You can enter the code during checkout.
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March 4, 2011 2:11:29 AM

hunter315 said:
Actually the TP-650 is better and more powerful than the ModXStream Pro 700W, look at the labels not the rated wattage, the OCZ unit has 552W combined between its 12V rails(46A) the TP-650 has 54A between its 12V rails making it significantly more powerful even though the OCZ is rated 50W higher the TP-650 can actually deliver significantly more power.

When you are making a purchase off of newegg, at the bottom of your shopping cart there is a place for promo codes, you would put it in there.


Would the OCZ750FTY support two MSI GTX 460 Hawk Talon's, a kit of 6gb 2000MHZ DDR3 and an I7 950 all oced + two ssd crucial ?



http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Checked it and it's 64A so it would be better than the Antec.
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March 4, 2011 2:12:59 AM

aford10 said:
You can enter the code during checkout.


Thank you dude.
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a c 297 ) Power supply
March 4, 2011 2:16:08 AM

Their labels make them pretty much equally powerful, the OCZ Fatality 750W has 650W between its 12V rails(54.17A) so its really rounding differences and they are equally powerful.
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March 4, 2011 2:19:53 AM

hunter315 said:
Their labels make them pretty much equally powerful, the OCZ Fatality 750W has 650W between its 12V rails(54.17A) so its really rounding differences and they are equally powerful.


How it's 54a if it's 18A x 4 - 8A WTF ?
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a c 297 ) Power supply
March 4, 2011 2:24:48 AM

Each rail will only allow up to 18A to be pulled from it, the rails allow the power to pass they do not provide the power, that is done by a common source. Look for the picture of the sticker, you will see it says that each of the 12V rails will allow 18A, but below that it totals them all up as 650W, not as 864W which is what 18A x 4 rails x 12V would be.


The pictures of the sticker with the load table are probably the most useful part of neweggs PSU listings.
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March 4, 2011 2:29:41 AM

hunter315 said:
Each rail will only allow up to 18A to be pulled from it, the rails allow the power to pass they do not provide the power, that is done by a common source. Look for the picture of the sticker, you will see it says that each of the 12V rails will allow 18A, but below that it totals them all up as 650W, not as 864W which is what 18A x 4 rails x 12V would be.


The pictures of the sticker with the load table are probably the most useful part of neweggs PSU listings.


I don't really understand it since it has 4 rails and one 12V 18A in each rail x 4

The sum of all that - 8A gives the result of 768W
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a b ) Power supply
March 4, 2011 2:32:31 AM

You have to look at the max combined power. The 12v rails are sharing it's power with the 3.3v, 5v, and -12v rails. That leaves 650w total power available for the 12v rails.
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a c 297 ) Power supply
March 4, 2011 2:39:12 AM

The rating for the rails is the max it will allow you to pull off that rail before shutting the unit down, you can pull 18A from any rail individually before it will shut down, but you cannot pull 18A from all four rails, the source cannot keep up.

Think of it like a house that is fed by a well, even if you have 4 hoses that can each give you up to 18 gallons per minute, if your well can only provide you 54 gallons per minute you cannot draw 18 gallons per minute from all the hoses at the same time the well wont be able to keep up and you will over load it even though you didnt exceed the rating on any of the individual hoses.
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March 4, 2011 2:42:37 AM

hunter315 said:
The rating for the rails is the max it will allow you to pull off that rail before shutting the unit down, you can pull 18A from any rail individually before it will shut down, but you cannot pull 18A from all four rails, the source cannot keep up.

Think of it like a house that is fed by a well, even if you have 4 hoses that can each give you up to 18 gallons per minute, if your well can only provide you 54 gallons per minute you cannot draw 18 gallons per minute from all the hoses at the same time the well wont be able to keep up and you will over load it even though you didnt exceed the rating on any of the individual hoses.


Forget all that shite of the gallons, just give me the complete sum you do for it to be 650W
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a c 297 ) Power supply
March 4, 2011 2:46:10 AM

I look at the sticker, and it says
12V1....12V2.....12V3.....12V4
18A.......18A.......18A.......18A
...............650W....................


Thats where i get the 650W from, look through the pictures on newegg of it, and you will see one with the load table that shows the combined 12V rating being 650W.


there is no magical formula that lets you sum up the rails, you have to look for it on the load table since 95% of units have a combined power less than what you would think if you just added all the rails together.
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