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8pin vs. 4pin w/ Sandy Bridge OC Question - Page 2

post #11 of 18
A 4 pin connector will GREATLY hinder your overclock. There is simply less stable current going to the CPU, and while you can still do a moderate overclock, you will will not only possibly need higher vcore for the same oc possible with an 8 pin connector, but you *might*risk burning out the connector if you do an extreme overclock This may not be as much of an issue on SB as previous quads, though, since they draw less power.

Motherboards with 4 pin connectors were basically designed to be run with very moderate overclocking..they aren't made for the enthuiast.

If I recall correctly, most of the 4 pin motherboards have like a 1.35v vcore limit, although this may have changed (I believe some bios update let one of the boards go up to 1.5...can't remember which).
Edited by Falkentyne - 5/31/11 at 2:02am
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post #12 of 18
Thread Starter 
Quote:
Originally Posted by Tator Tot View Post
Well a fan won't really help a wire as the part that's getting hot (the copper strands) are inside the insulation (thus more heat is built up inside then expelled.)
Just keep an eye on that, if it gets hot, turn the OC down do so you don't burn a wire.

If it doesn't feel warm really, don't worry about it then.
What's a good way to prevent it from getting hot? Not use crazy voltages?
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post #13 of 18
Quote:
Originally Posted by Kvjavs View Post
What's a good way to prevent it from getting hot? Not use crazy voltages?
That's one way. Another thing that will help is good airflow onto the motherboard.
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post #14 of 18
Thread Starter 
Quote:
Originally Posted by sLowEnd View Post
That's one way. Another thing that will help is good airflow onto the motherboard.
I thought the insulation would block any cool air as well?
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post #15 of 18
Im not sure how much difference there is between a 4pin and 8pin cpu connector on sandy bridge, but this 4 pin motherboard has been rock solid @ 4.5ghz, and i feel my voltage is pretty good also. Ive folded both cpu/gpu for 18 hours straight, ran prime95 for 8 hours straight multiple times.
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post #16 of 18
It will block most of it since the coating on the wires wont conduct the heat from the wires very well. Either way if the wire is hot turn down the voltage, with a fan or not because you sure as hell dont want to catch your stuff on fire.
 
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post #17 of 18
Quote:
Originally Posted by Kvjavs View Post
What's a good way to prevent it from getting hot? Not use crazy voltages?
Well just keeping the overclock low.

Frequency usually has a larger effect on power draw than voltage does.

Because CPU Vcore is taken directly from the 12v line and then stepped down to what is needed.
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post #18 of 18
Thread Starter 
Quote:
Originally Posted by Tator Tot View Post
Well just keeping the overclock low.

Frequency usually has a larger effect on power draw than voltage does.

Because CPU Vcore is taken directly from the 12v line and then stepped down to what is needed.
Ah ok, thanks. I been looking at more CPU-Z shots of these higher clocked SB chips and it seems that most over 5ghz have had cores disabled to achieve it. I'm thinking more realistically my OC will be just around 4.8ghz or so.

I'll do what you said and manually check the wires to see if they're getting hot when I get my SB system up and running
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