PSU's and Motherboards

Wein13 · 09-09-2008, 07:33 AM

I'm about to embark on the adventure of building my own computer. Before I do, however, I have a question about power supplies and motherboards. I have seen in some of the builds on here, people have recommended a PSU with a 20+4 pin main connector and a motherboard with a 24 pin power connector. What does this sort of thing mean? I want to make sure I get components that will work together.

daisymtc · 09-09-2008, 10:36 AM

Old Mobo have 20pin, New Mobo have 24Pin. A 20+4 Pin PSU allow u to plug in both

Kornowski · 09-09-2008, 12:29 PM

Quote:

Originally Posted by daisymtc

Old Mobo have 20pin, New Mobo have 24Pin. A 20+4 Pin PSU allow u to plug in both

Also, in addition to the 20+4 Pin Power, motherboards will require a seperate 4 Pin Power lead to go up in the top, near the CPU. Some of the higher end / newer motherboards will ask for a 20+4 Pin and an 8 Pin (instead of the 4 pin, for the CPU).

Wein13 · 09-09-2008, 03:42 PM

Ahh, ok. Thank you both.

Wein13 · 09-09-2008, 10:03 PM

Ok, another question. What are the +12V rails for?

TFT · 09-09-2008, 10:08 PM

The 12-volt is usually used for things with motors like the hard drives, CD-ROM, fans, etc. Not forgetting GPU's

Wein13 · 09-09-2008, 10:10 PM

So when a CPU cooler says it has a 4-pin power connector, would that come off of the 12-V rail then?

TFT · 09-09-2008, 10:13 PM

Yes, they run off the 12v line

Wein13 · 09-09-2008, 10:14 PM

Ok, thank you

Wein13 · 09-10-2008, 05:01 AM

Another question, what are the "peripheral" connections on a PSU for?

09-09-2008, 07:33 AM	#1 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	PSU's and Motherboards I'm about to embark on the adventure of building my own computer. Before I do, however, I have a question about power supplies and motherboards. I have seen in some of the builds on here, people have recommended a PSU with a 20+4 pin main connector and a motherboard with a 24 pin power connector. What does this sort of thing mean? I want to make sure I get components that will work together.

09-09-2008, 10:08 PM	#6 (permalink)
TFT Diamond Member Join Date: Oct 2006 Location: Yorkshire, UK Posts: 2,289	The 12-volt is usually used for things with motors like the hard drives, CD-ROM, fans, etc. Not forgetting GPU's __________________ Operator: Dave Operating System: XP Professional SP2 Processor: Intel E6750 Core Duo@3.20GHz Graphics: Nvidia 8500GT C: Drive 500GB D: Drive 250GB Memory: 2GB Last edited by TFT; 09-09-2008 at 10:11 PM.

09-09-2008, 10:13 PM	#8 (permalink)
TFT Diamond Member Join Date: Oct 2006 Location: Yorkshire, UK Posts: 2,289	Yes, they run off the 12v line __________________ Operator: Dave Operating System: XP Professional SP2 Processor: Intel E6750 Core Duo@3.20GHz Graphics: Nvidia 8500GT C: Drive 500GB D: Drive 250GB Memory: 2GB

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09-09-2008, 10:36 AM	#2 (permalink)
daisymtc Diamond Member Join Date: Jan 2007 Location: UK Posts: 2,718	Old Mobo have 20pin, New Mobo have 24Pin. A 20+4 Pin PSU allow u to plug in both

09-09-2008, 03:42 PM	#4 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	Ahh, ok. Thank you both.

09-09-2008, 10:03 PM	#5 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	Ok, another question. What are the +12V rails for?

09-09-2008, 10:10 PM	#7 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	So when a CPU cooler says it has a 4-pin power connector, would that come off of the 12-V rail then?

09-09-2008, 10:14 PM	#9 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	Ok, thank you

09-10-2008, 05:01 AM	#10 (permalink)
Wein13 Bronze Member Join Date: Sep 2008 Location: Ohio, US Age: 22 Posts: 34	Another question, what are the "peripheral" connections on a PSU for?