Question using 4pin cpu connector into mobo 8 pin does not work

[sajad564]

hi guys
recently i bought asus b460m prime and intel i3 10100f
my psu have just one 4 pin cable for cpu
but mobo have just one 8 pin input
so i decide to test that 4 pin cable..
But after turning on the pc
I did not receive any screen
There is no mention in mobo manual file about using just one 4 pin
======
so my question is that :
is 8 pin required for booting up this mobo ?
or maybe something else is wrong ?
(my language is very bad ,srry for that)

 

[rgd1101]

get a new psu

 

[sajad564]

get a new psu

i will
but i dont know is the problem source is psu or not.
is that normal ?because there is alot of content on internet that says 'we can use a 4 pin cable in 8 pin mobo'

 

[rgd1101]

Time to replace a psu that is so old, it doesn't have a 8 pin.

 

[Zerk2012]

hi guys
recently i bought asus b460m prime and intel i3 10100f
my psu have just one 4 pin cable for cpu
but mobo have just one 8 pin input
so i decide to test that 4 pin cable..
But after turning on the pc
I did not receive any screen
There is no mention in mobo manual file about using just one 4 pin
======
so my question is that :
is 8 pin required for booting up this mobo ?
or maybe something else is wrong ?
(my language is very bad ,srry for that)

Are you using a video card the motherboard graphics don't work with that processor.

 

[sajad564]

Time to replace a psu that is so old, it doesn't have a 8 pin.

actualy is not too old, i bought it 3 years ago..

 

[sajad564]

Are you using a video card the motherboard graphics don't work with that processor.

my graphics card is rx 580 4g

 

[rgd1101]

brand and model of this psu?

 

[sajad564]

brand and model of this psu?

it is an unknown psu :|
model : queen 480w gold(but there is no content on internet about it)
but in last 3 years i had not problem with that

 

[drea.drechsler]

i will
but i dont know is the problem source is psu or not.
is that normal ?because there is alot of content on internet that says 'we can use a 4 pin cable in 8 pin mobo'

Unless the PSU's +12V rail is overloaded and refuses to work.

Any PSU with only one 4pin has a very weak 12V rail anyway and yours is probably of old design that puts most of the power on the 3.3V rail. They're still sold because people still have old motherboards and CPU's that can use old design PSU's and need more 3.3V power.

Modern motherboards develop everything off the +12V rail with on-board VRM's instead of using the PSU's 3.3V rail for logic power.

 

[sajad564]

Unless the PSU's +12V rail is overloaded and refuses to work.

Any PSU with only one 4pin has a very weak 12V rail anyway and yours is probably of old design that puts most of the power on the 3.3V rail. They're still sold because people still have old motherboards and CPU's that can use old design PSU's and need more 3.3V power.

Modern motherboards develop everything off the +12V rail with on-board VRM's instead of using the PSU's 3.3V rail for logic power.

below text is from my psu box :
Ac input : 3.3v 5v 12v1 12v2 5vsb
max output current: 20A 25A 20A 20A 2A
i dont know what this values means
is that bad ?

 

[DSzymborski]

below text is from my psu box :
Ac input : 3.3v 5v 12v1 12v2 5vsb
dc output : 20A 25A 20A 20A 2A
i dont know what this values means
is that bad ?

Almost certainly very bad. There's no such thing as a quality mystery PSU. It's extremely frightening that you've been running an RX 480 on this. Its lifespan may already have been shortened.

Upload a picture of the whole label to imgur or a similar photo hosting site and copy the link to here.

 

[drea.drechsler]

below text is from my psu box :
Ac input : 3.3v 5v 12v1 12v2 5vsb
dc output : 20A 25A 20A 20A 2A
i dont know what this values means
is that bad ?

If it's to be believed it says it's full 480W is available on the 2, 12V rails. I'm not sure I can believe it though since there's also 191W available on 3.3V and 5V...not simultaneously with the 12V power of course but it still seems way to high.

Without looking inside and seeing how it's designed it's a mystery box. That's why people so frequently, and strongly, suggest staying with reviewed and well known brands/models.

 

[sajad564]

Almost certainly very bad. There's no such thing as a quality mystery PSU. It's extremely frightening that you've been running an RX 480 on this. Its lifespan may already have been shortened.

Upload a picture of the whole label to imgur or a similar photo hosting site and copy the link to here.

image one :
https://ibb.co/zxjHxzQ
image two :
https://ibb.co/NxQXWcJ

 

[rgd1101]

Oh and you don't have a gpu?
intel i3 10100f have no igpu.

 

[sajad564]

Oh and you don't have a gpu?
intel i3 10100f have no igpu.

i have
rx 580

 

[DSzymborski]

Wow, that is atrocious. Only 350W of +12V available on a "480W" PSU is something you'd see in 1997. And a mystery power supply business that nobody heard of; almost certainly some fly-by-night company just slapped some logos on garbage found collecting dust in a Guangzhou warehouse. But at least they didn't counterfeit an 80 Plus logo, so that's something, though they do imply it by throwing Gold in the name.

This PSU should never have been even turned on connected to a PC. If you ever sell this RX 580, you really need to disclose how you were powering this GPU to any possible buyers.

 

[DSzymborski]

The description, however, is legendary.

"Makes Customers Feel That They Have a Gold Bar In Their Hand."

🤣

 

[drea.drechsler]

image one :
https://ibb.co/zxjHxzQ
image two :
https://ibb.co/NxQXWcJ

You've been using it three years now?

Suggests to me you've already gotten all the life this PSU has to offer and it's time to move on to something modern to work properly with your new motherboard/CPU.

 

[sajad564]

You've been using it three years now?

Suggests to me you've already gotten all the life this PSU has to offer and it's time to move on to something modern to work properly with your new motherboard/CPU.

The description, however, is legendary.

"Makes Customers Feel That They Have a Gold Bar In Their Hand."

🤣

so do you think problem is related to psu ?is black screen normal with such a psu ?

 

[sajad564]

but my end question
is 8 pin required for asus b460m ?is there any chance that this mobo works with a 4 pin ?on internet some one says yes some one says no some one just says "change the psu"
in manual file there is such a text : " ensure to connect 8 pin power plug."
can mobo detect there is no enough pins ?and dont let pc to boot up ?(enough :8)
because people says : "one 8 pin is equal to two 4 pin and for weak cpu's one 4 pin can be enough"
and i3 10100f TDP is 65watt(so one 4 pin should be enough ?)

 

[drea.drechsler]

so do you think problem is related to psu ?is black screen normal with such a psu ?

I think it's an expected response to black screen if a PSU is not capable of meeting the necessary power demand on all or any of its power rails at startup.

but my end question
is 8 pin required for asus b460m ...

I don't know...but it's irrelevant since you can be sure to pick a PSU with the necessary 8 pin connector and of modern design if you get a new one. If the power rating is decent (550W, 650W ideal) it should last you many years.

 

[sajad564]

I think it's an expected response to black screen if a PSU is not capable of meeting the necessary power demand on all or any of its power rails at startup.

I don't know...but it's irrelevant since you can be sure to pick a PSU with the necessary 8 pin connector and of modern design if you get a new one. If the power rating is decent (550W, 650W ideal) it should last you many years.

my old cpu that works with psu(i5 2400) have very high temp(between 90 to 100 degree)
can we say that psu is the reason of such a temp ?

 

[sajad564]

hi guys
after couple of months
now i can say what was the problem
gpu is fine
psu is fine too
cpu is okey
but , what about mobo ?
one of the pcie slots is dead(or just does not work ) so
i just need to use another pcie slot for gpu(there is two pcie slot for gpu in this mobo)