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What do they mean!????

Goku1814
By Goku1814
in Power Supplies
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Posted (edited)

What are the differnces between a ATX vs ATX12V psu?

Edited by Goku1814
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2 minutes ago, Goku1814 said:

What are the differnces between a ATX vs ATX12V psu?

ATX is the old standard.  This was back before the CPU got it's power from the +12V rail.

 

ATX12V means it has the additional 4-pin to provide +12V to the CPU VRM.

 

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Posted

pretty much ^

QUOTE ME  FOR ANSWER.

 

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Posted
  • Author

im only wondering bc all of the other power supplies ive ever purchased dont say ATX12V

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10 minutes ago, Goku1814 said:

Then is this just a standard psu? https://www.newegg.com/cougar-bxm700-700w/p/N82E16817553043?Item=N82E16817553043 thats the psu ive bought recently.

Yes.

9 minutes ago, Goku1814 said:

im only wondering bc all of the other power supplies ive ever purchased dont say ATX12V

Really?  What PSUs are these?  Do they not have the additional CPU connector?

 

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ATX:

  • 20 pin motherboard standard
  • Molex connectors req.
  • Has also -12V, -5V and 3.3V rails.
  • Focusesses power on the 5V rail.
  • Mostly just the 1 rail.


ATX12V:

  • 24pin motherboard connector standard. (can take of 4 to make compatible with 20pin as well)
  • If more then 20Amps it has multiple 12V rails.
  • Mostly focused on powering the 12V rails.



etc, there is more. Google for the facts. :)

 

 

Both should work on current motherboards, but expect in the future to only be capable of using ATX12V PSU's.

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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Posted
Just now, HanZie82 said:

ATX:
20 pin motherboard standard
Molex connectors req.
Has also -12V, -5V and 3.3V rails.

Focusesses power on the 5V rail.

Mostly just the 1 rail.

ATX12V:
24pin motherboard connector standard. (can take of 4 to make compatible with 20pin as well
If more then 20Amps it has multiple 12V rails.

Mostly focused on powering the 12V rails.


etc, there is more. Google for the facts. :)

ATX12V also has -12V and +3.3V.  

 

ATX12V does not always have multiple +12V rails and often has +12V rails that are over 20A.

 

"Google for the facts".  LOL!!!!!!!!

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Posted
4 minutes ago, 5x5 said:

That's a fire cracker, not a power supply

There's nothing wrong with that power supply.

 

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15 minutes ago, Goku1814 said:

Then is this just a standard psu? https://www.newegg.com/cougar-bxm700-700w/p/N82E16817553043?Item=N82E16817553043 thats the psu ive bought recently.

Yeah i cannot recomend this PSU like @5x5 correctly said. Only use that if you're a volunteer for the fire department...

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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5 minutes ago, jonnyGURU said:

ATX12V also has -12V and +3.3V.  

 

ATX12V does not always have multiple +12V rails and often has +12V rails that are over 20A.

 

"Google for the facts".  LOL!!!!!!!!

Where did you get that erroneous information from? ATX12V doesn't use negative rails anymore...

My bad i misunderstood that part. They removed all negative rails BUT the -12V. But i got the rest correct.

And it is a requirement of the ATX12V standard to use multiple rails if over 20A.

 

 


I dont know where you got your information but you are clearly misinformed...
http://www.ieca-inc.com/images/ATX12V_PSDG2.0_Ratified.pdf
 

Screenshot_30.png

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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Posted

No, chill ...

 

ATX is really old standard ... the old versions of the standard had -5v, in newer versions -5v is deprecated, only -12v is still present because it's still used in serial ports, for serial communication.

 

ATX 12v just means they extended the old ATX standard by adding more wires with 12v, and the connectors to power the processor with 12v - the 4 pin or 8 pin cpu power connectors , the extra 4 pins that are added to the 20 pin motherboard connector to form the standard 24 pin connector ( really old motherboards could work with 20pin motherboard connector and didn't require separate cable to power cpu)

 

While the atx standard specification may say that if the power supply produces more than 20A there should be multiple "rails" of 12v, in practice there are power supplies which have a single rail with more than 40-60A of current... so don't mind that, ignore it.

 

So pretty much any modern atx power supply is that atx 12v variety.

 

There's a very recent development made by intel, a variation called ATX12VO or something like that  which just means the power supply produces only 12v, and has different connectors ... it doesn't have that standard 24pin atx connector anymore.

 

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3 minutes ago, HanZie82 said:

Where did you get that erroneous information from? ATX12V doesn't use negative rails anymore...
And it is a requirement of the ATX12V standard to use multiple rails if over 20A.


I dont know where you got your information but you are clearly misinformed...
http://www.ieca-inc.com/images/ATX12V_PSDG2.0_Ratified.pdf
 

See page 11 in that pdf :

 

image.png.95e652403e1660414560008b6bcb9f64.png

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13 hours ago, HanZie82 said:

Where did you get that erroneous information from? ATX12V doesn't use negative rails anymore...

My bad i misunderstood that part. They removed all negative rails BUT the -12V. But i got the rest correct.

And it is a requirement of the ATX12V standard to use multiple rails if over 20A.

 

 


I dont know where you got your information but you are clearly misinformed...
http://www.ieca-inc.com/images/ATX12V_PSDG2.0_Ratified.pdf
 

Screenshot_30.png

guidelines.gif.60d40505c25fb35b2efb12344c770f94.gif

 

The pdf you linked to is for ATX12V 2.0. From 2003. Back in 2003 a popular graphics card would have been something like the ATI Radeon 9800 XT. A 60W card that drew power from the AGP slot and from an additional 4pin molex connector. Nowadays you have 250W+ cards that draw power through PCIe connectors. Standards change.

 

Really you could just look at the label on your power supply to see that there isn't a 20A limit on 12V rails. Your profile specs show you have a Corsair RM750x (2018). The RM750x is a single rail PSU. It has a single 12V rail which is rated to provide up to 62.5A (62.5A x 12V = 750W).


Corsair is a reputable company when it comes to their PSUs. Since you bought and use one of their power supplies I'm sure you trust the people at Corsair who work on developing their PSUs to understand the ATX12V specifications, yeah...?

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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I pretty much ignored this thread when I was told I was misinformed.

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I get all my entertainment from people calling Jon ignorant. If I were him I'd be going "DO YOU KNOW WHO I AM".

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