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Power Supply Question....

C

Convergys

Member
Alright.. Here is the thing...
My current PSU is: 145Watts.... it was from an old dell
my new PSU is on the way...
Just for fun, I tried using the 145watt PSU on the new computer i just built

its a 2.53ghz cpu, 128 mb geforce 3 vid card.. with on board sound and lan... and a hard drive, cdrom and floppy...

Now the mobo I am using is a MSI 6585....

With my old PSU, the only connector I can use to connect power to the motherboard is the main one.. (20 pin that connects to the psu...)


the other one is for the cpu power... it is 4 pins, in the shape of a square.. some of you hopefully know what I am talking about...

Now on my current CPU... Instead of the 4 pin connector, i have a smaller version of the 20 pin.... so i can't connect the cpu power one...

The motherboard is a dell, so thats why its so weird. lol...

Now, when i plugged it all in... I couldn't get any power to it... (Not a surprise I know.. lol)

The question I want to know is... Would it be because of the power supply not high enough? or the fact I dont have a plug for the CPU power? or both?

Thanks to anyone who replies....
 
I'd be VERY careful if I were you......you run the risk of frying/damaging your components because the power supply isn't rated for your hardware.
 
You need to find an ATX12V p4 compliant power supply...ie antecs has quite a few 300 t0 400watt PSU's that do this....


there are a few mobos (mostly Asus) that allow you to use standard 4 pin molex type to power cpu but I would highly doubt you would even kick start that cpu with that power supply and all your components plugged in...
 
Alright.. Thanks for the clarification.. lol.. Only tried it once.. lol... been using the old one still... can't wait for the new PSU to come....


So that would be the reason you guys think it wouldn't power up at all? nothing plugged into the CPU Power molex connector thing? that woudl cause it not to power on at all? along with the low psu?
 
From here

I visited the Scott Mueller link you referenced at http://www.theinquirer.net/15040206.htm, and just to alert you, I'm not certain that Scott Mueller's dates on the Dell systems are correct. In late 1998, I attempted to upgrade a Dell P133-based system with an AOpen AX59Pro motherboard, in order to get around the nasty memory limitations in Intel's 430VX chipset. I knew the motherboard worked because I pulled it out of another working system. The board didn't work in the Dell. Then, when I reinstalled it in the system I pulled it from, it didn't work there either.

Fortunately I didn't kill the power supply so I was able to get the system up and running again by replacing the factory board.

This leads me to believe that Dell has engaged in the practice of nonstandard wiring since 1996.
Click to expand...

The greater danger in my mind isn't that it's only 145W... it's that it may not be pinned normally. Here's hoping your board is ok 🙂
 
Alright.. I thought it might not be.. One of the conenctors for the motherboard from the Dell power supply doesn't go anywhere on my new motherboard... and the cpu power molex connector on the motherboard isn't even plugged in.. lol.. once that new PSU comes in... I will be all good right?

New PSU's come with that 4 pin molex connector right? (plugs into the motherboard in the shape of a square)

Thanks for the help
 
Yeah, nearly all PSUs have the 4-in-a-square auxiliary connector nowdays. There will probably be a 6-in-a-row connector that you won't have any fittings for, too, don't worry about that one. Getting a reasonably good brand-name PSU for your new rig, I hope? 🙂
 
By looking at this pic here

Connector Pic

they just took the standard atx 20 pin connector, and cut it into 2 connections to make it impossible to use that PSU on another motherboard.. Is that a correct assumption?
 
Originally posted by: mechBgon
Yeah, nearly all PSUs have the 4-in-a-square auxiliary connector nowdays. There will probably be a 6-in-a-row connector that you won't have any fittings for, too, don't worry about that one. Getting a reasonably good brand-name PSU for your new rig, I hope? 🙂
Click to expand...

Yeah.. a 500 Watt PSU.. Its on its way back from a fresh RMA.. lol.. Im jsut waiting for it.... can't wait. I am stuck in a P3-800... once the PSU is in.. I will be on a p4-2.53 🙂🙂🙂
 
500W, yeah, but is it name-brand? 😉 Like Yoda says, power is nothing without control.
 
It is a Robanton... Had one before. pretty good ...


Originally posted by: Convergys
By looking at this pic here

Connector Pic

they just took the standard atx 20 pin connector, and cut it into 2 connections to make it impossible to use that PSU on another motherboard.. Is that a correct assumption?
Click to expand...

Is that correct also do you know mechBgon???
By the way.. I want to thank you for helping me out with this....
 
Whoa... :Q That looks EVIL. *fur stands on end* No idea what they've got going there, exactly.
 
I know.. thats pretty crazy eh??? Its odd though.. I put the Robanton 500 Watt in the Dell motherboard.. And it wouldn't boot up,... and it friend my PSU.. I guess I know why now eh??? Stupid Dell!!!!
 
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