I have a 400W PSU with a 4 pin CPU power cable. My new motherboard has an 8 pin CPU power socket. Can I use the 4 pin cable in the 8 pin socket? Will it cause any damage to my system to do this?
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4 pin in 8 pin Socket?
post #2 of 10
9/4/12 at 5:16pm
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u can use it. but its recommended to use the 8pin
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post #3 of 10
9/4/12 at 5:16pm
- andrewmchugh
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Quote:
Yes that will be fine, it will only fit in one side as the pins are keyed.
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post #4 of 10
9/4/12 at 5:19pm
- mezmenir
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It will fit as said above ^, as the pins only allow it to go in one way, even if it's only half of the connector. Problem is, that the 8-pin is rated to supply ~300W of power to a CPU (little overkill really, unless you get crazy with overclocking), and a 4-pin ATX power cable is only designed to deliver ~150W of power. Overly high current with that setup, and the board assuming an 8-pin connector, could lead to melted wires and burned sockets/plugs.
post #5 of 10
9/4/12 at 5:22pm
- M3T4LM4N222
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Yes you can put a 4 pin in an 8 pin CPU power socket. It will work without issue. You'll just be capped to about ~150W being supplied to the CPU rather than 300W. Realistically the only reason you'd need the 8 pin CPU power is if you where doing some extreme overclocking ie LN2 or Phase.
Edited by M3T4LM4N222 - 9/4/12 at 7:20pm
Edited by M3T4LM4N222 - 9/4/12 at 7:20pm
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Thanks for the quick replies everybody
. It's been difficult to find information about this subject that didn't turn into a flame war. I plan to add a couple video cards and overclock the CPU-RAM-GPU in the future, at which time I would upgrade my PSU. However, at the moment there seems to be a pretty good deal on the Corsair HX850 on Newegg. After the 10% off and $20 rebate it comes out to $128.49. What are your opinions on upgrading my PSU now? I would be running the following hardware:
Maximus V Gene
3570K (Stock Speed)
8GB of Samsung MV-3V4G3D/US (Stock Speed)
128GB Vertex 4 SSD
2 x 1TB HDD in RAID 1
PCIe Firewire Card
. It's been difficult to find information about this subject that didn't turn into a flame war. I plan to add a couple video cards and overclock the CPU-RAM-GPU in the future, at which time I would upgrade my PSU. However, at the moment there seems to be a pretty good deal on the Corsair HX850 on Newegg. After the 10% off and $20 rebate it comes out to $128.49. What are your opinions on upgrading my PSU now? I would be running the following hardware:Maximus V Gene
3570K (Stock Speed)
8GB of Samsung MV-3V4G3D/US (Stock Speed)
128GB Vertex 4 SSD
2 x 1TB HDD in RAID 1
PCIe Firewire Card
post #7 of 10
9/4/12 at 5:46pm
I'm currently using a 400W SeaSonic X.
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.
Edited by OverClockBug - 9/4/12 at 6:04pm
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.
Edited by OverClockBug - 9/4/12 at 6:04pm
post #9 of 10
9/4/12 at 6:09pm
- mezmenir
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Quote:
Originally Posted by OverClockBug 
I'm currently using a 400W SeaSonic X.
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.

I'm currently using a 400W SeaSonic X.
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.
For SLI/CFX, barring worst case scenarios with GTX690's and such- or an extremely high CPU overclock. A high quality 750-850 will be -more- than enough. My Seasonic X750 has two power hungry Fermi cards, and an X6 to deal with hah.
Edit: I was a little skeptic myself, until I saw this PSU sort of just giggle at GPU + SMP folding, fan barely runs and what not- awesome PSU, and only 750.
Edited by mezmenir - 9/4/12 at 6:13pm
post #10 of 10
9/4/12 at 6:14pm
Quote:
That is an excellent unit, mail Seasonic and ask them for an EPS cable, I'm sure they'll sent you one free of charge.Originally Posted by OverClockBug 
I'm currently using a 400W SeaSonic X.
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.

I'm currently using a 400W SeaSonic X.
I've been trying to figure out what GPU I would add in the future, and really I'm pretty open. But man, have I learned the hard way not to ask certain questions concerning power consumption and GPUs. I've read everything from 650W max for an SLI/CFX setup to 1000W. It's just too heated of a debate to get a straight answer.
EDIT: I forgot to mention I can't find the 8 pin connector for my PSU, but I had a spare 4 pin lying around.
About VGA's, your unit can power any single GPU card from the current generation except a highly overclocked 7970, but you'd be fine with anything else (680/670/7950/etc).
edit: might as well ask them for a dual 6+2pin PCIe cable as well, since your unit has only one despite being able to support VGAs that require two and having the same modular panel as the X-460, which does have two 6+2pin connectors.
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