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Old 05-10-2006, 04:39 PM   #1 (permalink)
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Default 20/24 pin mobo

I've got a MSI K8N Neo4-F mobo with a 24-pin connector. My Ultra X-connet has a 20-pin connector. Right now I'm running a 20-pin connector from the PSU to the lower 20 pins on my mobo, leaving the top 4 pins empty. The 20 to 24-pin power cables take up all 24 pins on the mobo. Can anyone explain this to me? What is the difference between a 20-pin and a 24-pin power connector? What is the advantage in getting a 20 to 24-pin power cable and filling up those empty 4 slots? Are there any negative effects to continue using the 20-pin power cable and leaving the top 4 slots open? Is there any effect on system stability while overclocking with the 20-pin cable or the 20 to 24-pin converter?
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Old 05-10-2006, 04:53 PM   #2 (permalink)
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Not really sure about this but its best to have all 24 pin connected if you have them
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Old 05-10-2006, 06:57 PM   #3 (permalink)
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It's just the extra power for the power-hog-of-a-machine.

You can get a 20 - 24 pin adaptor at a computer store. They're usually 15 - 20$.
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Old 05-10-2006, 07:34 PM   #4 (permalink)
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Quote:
Originally posted by CrazeD
It's just the extra power for the power-hog-of-a-machine.

You can get a 20 - 24 pin adaptor at a computer store. They're usually 15 - 20$.
I was going to do that anyway, but does it actually provide more power seeing as how the PSU doesn't change and the fact that the power is still only coming out of 20 pins at the source remains the same.

More specifically, does adding the 20 to 24-pin cable distribute the power differently or more efficently or something?
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Old 05-12-2006, 11:03 PM   #5 (permalink)
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i believe the idea is to provide more current to the motherboard. having extra 12v connectors to the motherboard lowers the resistance which consequently increases the current
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Old 05-13-2006, 02:24 AM   #6 (permalink)
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the extra four pin provides extra power to the system but on the 12v rail. where it mainly goes to the pci video card provides up to 75 watt of power.
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Old 05-13-2006, 03:05 AM   #7 (permalink)
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You don't need those extra pins. My computer runs fine with the 20 pin male plugged into the 24 pin female. I have an adapter but I don't use it because there is no point.
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Old 05-13-2006, 06:00 AM   #8 (permalink)
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Quote:
Originally posted by wxt38
the extra four pin provides extra power to the system but on the 12v rail. where it mainly goes to the pci video card provides up to 75 watt of power.
vs.

Quote:
Originally posted by RockyZ
You don't need those extra pins. My computer runs fine with the 20 pin male plugged into the 24 pin female. I have an adapter but I don't use it because there is no point.
Not to start an argument, but these are two totally different responses. I don't doubt that your (Rocky) computer runs fine without it, so does mine actually. But 75 Watts could essentially make or break your setup if you have a very demanding system (like running SLI with a 450W PSU).
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Old 05-13-2006, 07:43 AM   #9 (permalink)
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I heard somewhere that you can't overclock without those 4 pins, but I'm not sure about that.
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Old 05-13-2006, 01:51 PM   #10 (permalink)
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i had my opty overclocked only 20 pins.. but now i have 24.. so maybe that means i should try again.. try to get 3.0 now that i added a new case fan... sounds like a plan to me
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