Hi tomshardware people,
My PSU recently died on my desktop PC, and I had a friend who had an old PSU that he let me have to replace it with.
The only issue is that the new PSU that I got has a 20 pin motherboard power connector, but my mobo has a 24 pin connection on it. My PC works fine with the 20 pin connector plugged into the 24 pin slot with 4 empty pins leftover, however, this is unsafe; drawing too much power through the 20 pins can cause them to melt/ burn out. I really do not want this to happen, but I also really do not want to have to buy a new PSU just for the +4 connector.
To remedy this problem I am considering removing the "+4" plug from the old PSU's "20 + 4" connection.
Next, I plan on cutting the end off an extra serial ATA power connector and taking it's wires, then splicing them to the "+4" plug from the broken PSU. The reason why I am thinking of using the Serial ATA power is because it has 5 wires: +3.3v, ground, +5v, ground, and +12v.
The last 4 pins of the 24 pin mobo power connector are:
+3.3v, ground, +5v, +12v
As you can see, the wires in a SATA power connector and the wires of the +4 portion of the "20+4" connector are the same voltage with the exception that SATA has an extra ground wire.
Now here are my questions:
Do you think it would be safe to splice the SATA power wires into the +4 connector's wires to effectively create my own 20+4 connector? I plan on connecting them using those splicing caps from the hardware store and some electrical tape.
What could go wrong? Is it unsafe / dangerous / likely to cause a fire?
Also, what should I do with the extra ground wire from the SATA power connection? Should I splice both ground wires from the SATA end to the one ground wire on the +4 connector?
Is there anything I didn't think of? Any unforeseen issues with rails or anything else?
And lastly, does anybody have any suggestions for a better way of doing this, a better connector to cut/splice with, an easier way, or any advice at all? Im tight on money so Im really trying to avoid buying another PSU. Im a DIY cheapo.
I'm not an electrical engineer, but I have a CompTIA A+ cert. and plenty of experience with fixing computers and other various electronics.
RIG:
OKIA PSU, 500W MAX output
(+5v & +3.3v combined load 230W)
(+5v, +12v & +3.3v Combined Load 422W)
ASUS M3A78 PRO
AMD Athlon X2 6000
4 GB DDR2 800
GeForce 9800 GTX+ (1GB VRAM)
300 GB 7200 RPM SATA HDD
Super WriteMaster DVD-RW/CD-RW
3 Casefans + Heatsync
My PSU recently died on my desktop PC, and I had a friend who had an old PSU that he let me have to replace it with.
The only issue is that the new PSU that I got has a 20 pin motherboard power connector, but my mobo has a 24 pin connection on it. My PC works fine with the 20 pin connector plugged into the 24 pin slot with 4 empty pins leftover, however, this is unsafe; drawing too much power through the 20 pins can cause them to melt/ burn out. I really do not want this to happen, but I also really do not want to have to buy a new PSU just for the +4 connector.
To remedy this problem I am considering removing the "+4" plug from the old PSU's "20 + 4" connection.
Next, I plan on cutting the end off an extra serial ATA power connector and taking it's wires, then splicing them to the "+4" plug from the broken PSU. The reason why I am thinking of using the Serial ATA power is because it has 5 wires: +3.3v, ground, +5v, ground, and +12v.
The last 4 pins of the 24 pin mobo power connector are:
+3.3v, ground, +5v, +12v
As you can see, the wires in a SATA power connector and the wires of the +4 portion of the "20+4" connector are the same voltage with the exception that SATA has an extra ground wire.
Now here are my questions:
Do you think it would be safe to splice the SATA power wires into the +4 connector's wires to effectively create my own 20+4 connector? I plan on connecting them using those splicing caps from the hardware store and some electrical tape.
What could go wrong? Is it unsafe / dangerous / likely to cause a fire?
Also, what should I do with the extra ground wire from the SATA power connection? Should I splice both ground wires from the SATA end to the one ground wire on the +4 connector?
Is there anything I didn't think of? Any unforeseen issues with rails or anything else?
And lastly, does anybody have any suggestions for a better way of doing this, a better connector to cut/splice with, an easier way, or any advice at all? Im tight on money so Im really trying to avoid buying another PSU. Im a DIY cheapo.
I'm not an electrical engineer, but I have a CompTIA A+ cert. and plenty of experience with fixing computers and other various electronics.
RIG:
OKIA PSU, 500W MAX output
(+5v & +3.3v combined load 230W)
(+5v, +12v & +3.3v Combined Load 422W)
ASUS M3A78 PRO
AMD Athlon X2 6000
4 GB DDR2 800
GeForce 9800 GTX+ (1GB VRAM)
300 GB 7200 RPM SATA HDD
Super WriteMaster DVD-RW/CD-RW
3 Casefans + Heatsync