PSU compatibility

[Billson]

So I have this old PC("A" for organization purposes) and a newer one(B). I want to put B's components in A's case because I have a GT630 that doesnt fit in B's case. A's PSU is bigger, so naturally I want to use that one, because the other one cant be screwed into A's case. The problem is, I plug everything, it doesnt boot. Then I remove B's PSU and put it in the case(Its loose because its not screwed) and boots perfectly. The difference between them is yhe 12-pin connector. A's has the regular 12-pin, and B's has the 10-pin +2 pins not attached. Can that be causing the problem? I wish I could upload pictures, but the limit is 1mb. If you can tell me how to upload bigger files it woild make this easyer. Thanks in advance.

 

[Intel_man]

The "B" PSU only has a 10 pin connector?

 

[beers]

I assume you mean 20 and 24 instead of 10 and 12?

 

[Billson]

No. I meant this:
B: 20+4
A:24

 

[johnb35]

There is no difference, some psu's can be broken down into a 20 pin for older style motherboards. Most likely the A psu is bad.

 

[Okedokey]

Worst case, you can use B for mobo power and A for everything else.

 

[Billson]

I dont think the psu is bad. I was using it a month ago, before I got the new PC. I guess I can try it on A PC. It has no hard drive tho. It should boot anyways right? You are saying there are no compatibility issues?

 

[johnb35]

Are these OEM systems meaning store bought or are these custom built machines. If OEM, its possible that a certain psu is pinned differently then what you are trying to use.

 

[Billson]

Are these OEM systems meaning store bought or are these custom built machines. If OEM, its possible that a certain psu is pinned differently then what you are trying to use.

A is a Dell Studio 540, I added a GT630. B is an Acer Aspire X3470.

 

[johnb35]

It very well could be a pinout issue. Compare the color of wires in each connector for each pin, if they are different then thats probably the issue.

 

[Billson]

It very well could be a pinout issue. Compare the color of wires in each connector for each pin, if they are different then thats probably the issue.

I did that yesterday, and they are exactly the same. I will test it with As components and tell you what happens.

 

[Billson]

So guys. Both 24-pin connectors had the same colours, but in fact, the 4-pin connectors were different. As were black and brown and Bs were black and yellow, so I guess thats the problem. What I did was putting the GT on As components in As case with As PSU, so now everything works like a peach (it all worked out bcs A had an Intel Core 2quad Q8200 and B had an AMD E2-3200, wich is supposed to be worse). So thank you all dor the help!

 

[johnb35]

Yeah, the 8200 is a quad core compared to the dual core 3200. Glad you got it sorted finally.

 

[Billson]

Glad you got it sorted finally.

Thanks. Btw, for those who helped me building the PC, I finally put everything together and works like a charm. Thank you all!