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Two PSU's for Dual 8PIN. - Page 2

post #11 of 27
lol i realized what i said made no sense.

I have never had a problem with 1 8 pin on dice.

you really need ln2 to be pushing that hard
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post #12 of 27
Thread Starter 
Quote:
Originally Posted by reflex99 View Post
lol i realized what i said made no sense.

I have never had a problem with 1 8 pin on dice.

you really need ln2 to be pushing that hard
Cool thanks for the input.

I am not worried about having trouble with only 1 8 pin, I just thought even a little extra juice would help stabilize current to make my board even happier when I'm trying to push it.
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post #13 of 27
it can't really hurt, it just isn't nessescary.
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post #14 of 27
I run my E770 with only one 8-pin, even though my AX 750 has two cables. I needed the other PSU output to run additional PCI-e cables. You really should be fine with only one.
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post #15 of 27
Even identical units will not push the exact same voltage. Slight variations in the components and manufacturing will produce slight variations in the power.

I would stick with one.
post #16 of 27
lots of high wattage ones come with 2 8pins. ax1200. silverstone strider. the antec 1200w etc. oh and of corse the EVGA sr-2 one would come with 2 8 pins, its for the sr-2... that NEEDS 2 8 pins. but its just an antec 1200 really.
     
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post #17 of 27
Thread Starter 
Quote:
Originally Posted by kremtok View Post
I run my E770 with only one 8-pin, even though my AX 750 has two cables. I needed the other PSU output to run additional PCI-e cables. You really should be fine with only one.
Re-read my OP. My question isn't "will I be fine with only one" or "do I need more than one".
Thanks for the input anyways
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post #18 of 27
Thread Starter 
Quote:
Originally Posted by Flynny View Post
Even identical units will not push the exact same voltage. Slight variations in the components and manufacturing will produce slight variations in the power.

I would stick with one.
Yeah that's what I was figuring, even identical units would have slight differences. However that was more of a reason to point to it being Okay to run two for me lol.
Quote:
Originally Posted by Sircles View Post
lots of high wattage ones come with 2 8pins. ax1200. silverstone strider. the antec 1200w etc. oh and of corse the EVGA sr-2 one would come with 2 8 pins, its for the sr-2... that NEEDS 2 8 pins. but its just an antec 1200 really.
Haven't stepped up to a high wattage one yet, in a financial crysis for now, but thanks for the input.
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post #19 of 27
I'm not saying you need identical power supplies, I'm saying you need one power supply. This isn't impossible BUT... it seems like a really bad idea to me. Though you say that you've seen lots of people do it before so maybe I'm off-base. However, from my understanding of SMPS's work... this could go wrong fast.

Depending on the SMPS topologies used it might be essential to bring them on at the same time, or wire them together NOT through the motherboard...

If I were to do this... I would want to do a lot of testing first without a motherboard to melt connected. Wire the ground lines together and power up both PSUs (not connnected to a computer at all) and use a multimeter, one with a fuse, in between the 12V lines to see how much current is flowing between them.

I would also make sure I had the 12V lines wired together outside of the motherboard so the motherboard isn't the ONLY path through which power can flow between them. I figure it's better to melt a wire than a motherboard.
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post #20 of 27
is there not an adapter available for stuff like this? like molex to 8-pin? or pcie to 8-pin
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