running pc without the 4-pin cpu
- Thread starter Bradan
- Start date
You have to go by the specifications on the board. When looking at the power requirements I think this is what trips people up a little. When you think of 4 wire plug you generally think of the 4 that go with the 20 on the main power connection. But what everyone often forgets is the auxillery 12v feed that plugs in near the cpu socket. On boards with that you will note the molex socket near the back of the case on the board itself. You can plug an extra fan or even SLI feed there.
Dont know what all that was about!
But yes some would work without the 4 pin power connector, think some boards are still wired as they were before the 4 pin and it is used as a supplement power for the CPU, but if you pushed the CPU for power it would lock up or restart or whatever!
The yellow and black four wired plug that goes in near the cpu socket is not part of the new power configuration for main power. That is an extra 12v source now available for SLI/Crossfire setups and other devices that run on 12v. The additional 4pin plug that will detach from the main connector is due to the way the newer lines of boards are layed out for a different power distribution.
With the small 4pin plug you won't be able to start most systems. When the specifications say 24pin that small 4pin plug has to be in. It's removable so a new supply can be used on an older board with a 20pin socket. What's so hard to understand about that?
With the small 4pin plug you won't be able to start most systems. When the specifications say 24pin that small 4pin plug has to be in. It's removable so a new supply can be used on an older board with a 20pin socket. What's so hard to understand about that?
12v for the cpu only? Gee I thought those ran on only 1.4v.
Meanwhile you can explain why the E-Z plug yellow + black four wire plug seems to power SLI on the Asus model here. http://img221.imageshack.us/img221/4179/sliezplughr6.jpgThe same E-Z plug is needed for the system to start on AMD boards. And right behind the E-Z plug there is the auxillery 12v molex next to one of the case fan plugs on the board's layout. http://img221.imageshack.us/img221/7417/slisamepluglc9.jpg The E-Z plug just happens to be next to the PCI-E slot by chance on the diagram there. http://img132.imageshack.us/img132/8080/sliauxilleryhb4.jpg
Last edited:
Archangel
VIP Member
My Asus board has that Ez-plug too ( is it Asus only? :x ) and yes, its a normal molex connector. (on my board, the Ez-plug is needed when you have a 20pin PSU and using 2 grafic's cards. ( currently i have a 24-pin PSU and i still have the ez-plug connected, since i guessed it wouldnt do any harm. )
as far as i know, the 4-pin connector is only for the CPU feed, so at this point i can only agree with Cromewell =]
The_Other_One
VIP Member
PC-eye, what does that post have to do with this topic? If you're going to direct us to some article, quote it in your post and cite the link!
Now, for the post...my Abit AN8 would post without the square CPU plug(what is the official name for that) However, my CPU fan wouldn't spin. I've not made that mistake again...not that it caused major problems, but I don't like doing stuff like that! hehe, but you should be fine. Take the PCI Express power connection(on cards themselves) They(or most) will work without the extra power, but might act up in games and what not...
Now, for the post...my Abit AN8 would post without the square CPU plug(what is the official name for that
) However, my CPU fan wouldn't spin. I've not made that mistake again...not that it caused major problems, but I don't like doing stuff like that! hehe, but you should be fine. Take the PCI Express power connection(on cards themselves) They(or most) will work without the extra power, but might act up in games and what not...The server boards were the first along with the P4 boards to require the extra 4pin plug due to increase in power demand. 24pin also started to be required on various Socket 754 model and now required in general. The atx supplies(updated) now have 20+4 instead of 20pin main connectors.