+12v power connector

[Chris]

Archived from groups: alt.comp.hardware.amd.x86-64,alt.comp.periphs.mainboard.gigabyte (More info?)

i have just upgraded to a GA-K8NS PRO mainboard and installed it without a
glitch, went ahead and installed windows and drivers etc.

THEN

i was looking in the manual for something and noticed the +12v power
connector and it says that the bord will not boot if this is not connected.

the thing is - i didnt have it connected - i have connected it noe and
system still works the same - what is this plug for ?? and why does the book
say it must be connected for the system to boot??

thanks

 

[Dee]

Archived from groups: alt.comp.hardware.amd.x86-64,alt.comp.periphs.mainboard.gigabyte (More info?)

chris wrote:
> i have just upgraded to a GA-K8NS PRO mainboard and installed it without a
> glitch, went ahead and installed windows and drivers etc.
>
> THEN
>
> i was looking in the manual for something and noticed the +12v power
> connector and it says that the bord will not boot if this is not connected.
>
> the thing is - i didnt have it connected - i have connected it noe and
> system still works the same - what is this plug for ?? and why does the book
> say it must be connected for the system to boot??
>
> thanks
>
>

The 4-wire +12v lead supplies power directly to the CPU. It is supposed
to ensure the CPU has adequate and stable voltage. Most MBs will boot
without that line connected and a few will not.

 

[Guest]

Archived from groups: alt.comp.hardware.amd.x86-64,alt.comp.periphs.mainboard.gigabyte (More info?)

Thus spake chris:

>what is this plug for ?? and why does the book
>say it must be connected for the system to boot??

The pin in the ATX connector are only rated for 6 amps each. Since
most current boards power the CPU voltage regulators from 12V - and
there's only one 12V line in the ATX - the standard ATX connector
would limit CPUs to around 65 watts.

By adding in that auxiliary 12V connector, with an extra pair of 12V's
and grounds, the CPU can get its power without exceeding the
connector's rating.

For what it worth, you CAN get more than 6 amps per pin through the
ATX, but trying to draw more current increases the voltage drop across
the connector and risks having the connector over heat, melt, and
burn.

http://www2.arnes.si/~mlivak/burned%20atx2.jpg
http://www.halfdone.com/personal/job/pictures/screwups/burning_and_exploding/Burned_ATX_connector.jpg


--
sls

 

[Anthony]

Archived from groups: alt.comp.hardware.amd.x86-64,alt.comp.periphs.mainboard.gigabyte (More info?)

yup must agree on the over heating I installed the connector and my board
temp went straight down lol I forgot to connect it heck I dont remember
seeing it lol


Anthony



"Satan's Little Sister" <littlesisterNO@SPAMsofthome.net> wrote in message
news:3iflt0ln67urovt5f1t8n0qbbipb9uka00@4ax.com...
> Thus spake chris:
>
>>what is this plug for ?? and why does the book
>>say it must be connected for the system to boot??
>
> The pin in the ATX connector are only rated for 6 amps each. Since
> most current boards power the CPU voltage regulators from 12V - and
> there's only one 12V line in the ATX - the standard ATX connector
> would limit CPUs to around 65 watts.
>
> By adding in that auxiliary 12V connector, with an extra pair of 12V's
> and grounds, the CPU can get its power without exceeding the
> connector's rating.
>
> For what it worth, you CAN get more than 6 amps per pin through the
> ATX, but trying to draw more current increases the voltage drop across
> the connector and risks having the connector over heat, melt, and
> burn.
>
> http://www2.arnes.si/~mlivak/burned%20atx2.jpg
> http://www.halfdone.com/personal/job/pictures/screwups/burning_and_exploding/Burned_ATX_connector.jpg
>
>
> --
> sls

 

[Chris]

Archived from groups: alt.comp.hardware.amd.x86-64,alt.comp.periphs.mainboard.gigabyte (More info?)

i thought it might be something like that

Thanks

"Dee" <dee@home.net> wrote in message
news:WUyCd.3163$W25.1868@fe61.usenetserver.com...
> chris wrote:
>> i have just upgraded to a GA-K8NS PRO mainboard and installed it without
>> a glitch, went ahead and installed windows and drivers etc.
>>
>> THEN
>>
>> i was looking in the manual for something and noticed the +12v power
>> connector and it says that the bord will not boot if this is not
>> connected.
>>
>> the thing is - i didnt have it connected - i have connected it noe and
>> system still works the same - what is this plug for ?? and why does the
>> book say it must be connected for the system to boot??
>>
>> thanks
>
> The 4-wire +12v lead supplies power directly to the CPU. It is supposed
> to ensure the CPU has adequate and stable voltage. Most MBs will boot
> without that line connected and a few will not.
>
>