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Discussion Starter · #1 ·
 
My SMPS the (motherboard Power) connector P1 has 20 pin, but in my motherboard the P1 socket has 24 pin which is 4 pin more to my SMPS, though my system is now running.

My question-

1) is there anything wrong, insufficient of power to my system, as there 4 pin short at SMPS P1 connector ?

2) I propose to insert a graphic card ATI 5XXX series, than, may any problem arise ?

My Config-

SMPS Model- FPS400-60THA-P

MOBO- ASUS M4A88TD M-EVO

Processor- AMD PhenomII X4 965 BE

RAM- CORSAIR 2X2Gb

HDD- 1X WD 500Gb SATAII

FAN - 1X 120mm, 1x 80mm

Propose graphics card - ATI 5750.
 

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The reason for the extra 4 power connectors is to provide sufficient power to systems without overloading circuits. I have seen builders and even OEMs use 20 pin ATX connectors on a 24 pin board, but I don't recommend it.

I would upgrade your PSU before you add anything else to the system, especially a PCIe graphics card.

I recommend a minimum of 550W active PFC 80+ PSU. Here is a thread that is very informative. I suggest you choose a PSU from the brands and models that are listed there.

http://www.techsupportforum.com/forums/f210/power-supply-information-and-selection-192217.html
 

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The reason for adding the extra 4 pins to the ATX connector as well as the PCIe connectors and the CPU (4 or 8 pin) is to allow enough power to reach the components that need it safely.

Mainly, if your computer components aren't recieving the power they need to operate it can cause system instability and damage to components. I recently repaired a Acer for a co-worker that came with a 20 pin ATX connector to feed a quad core Athlon. He told me that, since the computer was new he would suffer frequent black screens and other stability problems and that the computer would just shut off for no reason. I replaced his PSU with a Seasonic unit with the proper connections and he has had no problems since.

Drawing too much power through the circuit (especially the high resistance areas like the connectors) can cause burnt traces, melting wires (which lead to shorts) and in rare instances, fire.
 

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Get a good quality 650W PSU and it will have all the required connections and power.
Go with the Corsair.
 

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The power supply is the most important part of a PC to me. A weak power supply can do all kind of weird things and problems and burn things up. And I don't think you can beat a Corsair.
Good Luck and God Bless Johnny
 
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