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Gigabyte GTX 980 G-Powered.. Hardcore only apply - Page 7

post #61 of 93
Wow very impressive OP! Love seeing those boards show up on different builds and see how much power can be pushed through the cards. tongue.gif congrats on the competition too!
 
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post #62 of 93
Quote:
Originally Posted by 47 Knucklehead View Post

Seems way overkill, and pointless to add 1/4" wide grounds to ground pads that lead to tracks on a PCB that maybe are 100 mils wide. Maybe I'm totally wrong here, but when dealing with electricity on PCBs, I've always found that when huge power draws happen and it fails, all that is going to happen is that the PCB tracks will be the weak point and "lift". So I just don't get the point of adding huge ground lines outside the PCB that are 25 or 50 times as large as the ground on the PCB, because ultimately its the PCBs ground 100 mil tracks that still have to sink that current and not fail.
Well you know, the weak point on the usual PCBs is still not the tracks but the VRMs themselves. I have to agree that soldering 1/4" wide grounds is pointless but at least provides good support for the external VRM biggrin.gif
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post #63 of 93
Subbed in the events of updates, this is very cool!
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post #64 of 93
can u snap a top down view of the card? and maybe a couple of other close ups?, id like to try something like that
post #65 of 93
Congrats big time Steponz! That is very impressive.You have done what most of us here on OCN can only dream about.
post #66 of 93
You sir...Got some balls to do this with a card like GTX980!
post #67 of 93
nice... but can it COD?
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post #68 of 93
ill be honest ... I don't know whats happening here, nor what you are trying to do biggrin.gif
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post #69 of 93

One hell of a zombie card!

 
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post #70 of 93
Quote:
Originally Posted by 47 Knucklehead View Post

Seems way overkill, and pointless to add 1/4" wide grounds to ground pads that lead to tracks on a PCB that maybe are 100 mils wide. Maybe I'm totally wrong here, but when dealing with electricity on PCBs, I've always found that when huge power draws happen and it fails, all that is going to happen is that the PCB tracks will be the weak point and "lift". So I just don't get the point of adding huge ground lines outside the PCB that are 25 or 50 times as large as the ground on the PCB, because ultimately its the PCBs ground 100 mil tracks that still have to sink that current and not fail.

Quote:
Originally Posted by DaveLT View Post

Well you know, the weak point on the usual PCBs is still not the tracks but the VRMs themselves. I have to agree that soldering 1/4" wide grounds is pointless but at least provides good support for the external VRM biggrin.gif

Its important to remember that at these huge currents we're talking about, its important to get the resistance down as low as possible. The leads running between the 2 boards are much longer than the ones on the GPU PCB alone, so they must be much bigger. The PCB tracks must carry the same current, yes, but not as far. So no, its not pointless.
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