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dumb psu question

post #1 of 12
Thread Starter 
Ok, probably the dumbest question I have ever asked on here, but, what are the advantages or dissadvantages I could run into with only using a single 4pin cpu plug on a asrock 970 extreme 3 with an fx-8120??
post #2 of 12
Some people say it works, others say it won't even post. I don't think it will blow up your mobo, but I think the obvious thing is you won't be able to get the most out of it.
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post #3 of 12
You can get away with 4-pin on SB/IB system, but not so much on FX system.

Basically 8-pin has two more wires for +12 V and two more wires for ground. Extra wires are there to ensure a stable power delivery. When you use power hungry CPU such as FX-8120, it draws quite a lot of power from the CPU power connector. Now it will draw the same amount of power regardless if a 4-pin or a 8-pin is used. But when you plug in 4-pin only, each wire has to carry twice amount of current versus using a 8-pin.

Having each wire delivery two times the current for a power hungry CPU equals to an unstable power and possibly (though not very often) a burnt wire/connector. There is no disadvantage to use 8-pin power connector really. It is the same reason why on some motherboards you need to use auxiliary connector (PCIe/SATA/Molex) when you run 2 or more GPUs, as each PCIe slot needs to deliver 75 W to each GPU.

Basically, use the 8-pin whenever possible. Not using it on power hungry CPU calls for trouble, especially when you overclock FX-8120.
Edited by trumpet-205 - 4/27/12 at 9:52am
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Misaka
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post #4 of 12
You would be fine doing a four pin, but I wouldn't recommend any OCing....
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post #5 of 12
Thread Starter 
ok, up and running right now on the psu with only a 4pin. also using an adapter to power my GPU lol. only gonna last till the new psu arrives next week.
post #6 of 12
At stock speeds you should be ok, but I wouldn't overclock it.
post #7 of 12
Quote:
Originally Posted by Papas View Post

ok, up and running right now on the psu with only a 4pin. also using an adapter to power my GPU lol. only gonna last till the new psu arrives next week.

Sounds good. Keep it at stock for now. smile.gif
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Misaka
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

Sounds good. Keep it at stock for now. smile.gif

ive got an option of pickign up a antec 550w for around $55 at work
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016

buying a used(with receipt) Raidmax 850w for $70(wont come down, and i have to drive an hour to get it)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817152043

or order a OCZ ZT 750W for $100(Plus $20 rebate Plus $20 newegg gift card)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341052

What would you reccomend.
post #9 of 12
OCZ ZT 750W hands down. smile.gif
Misaka
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Misaka
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

OCZ ZT 750W hands down. smile.gif

lol i shouldnt ask questions i know the answer to....i wanted someone to tell me to get the antec so i didnt have to wait and order the ocz....lol
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