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Can you Solder a PCIe slot to the backside of a mobo?

post #1 of 22
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I had been asked this question by a friend who thinks I know a bit more than him, if he could take off the PCIe slot, mount it to the back of the mobo and use his card there.

My immediate response was "no." but then I thought for a second and wasn't sure. He wants to try to separate his GPU from the rest of the components for heat, and it sounds like a good idea if possible. He wants to have a double wide custom case with airflow on one side for the GPU(s) and the other for CPU/VRMs/Ram so "the hot air won't mix".

Can't see it being much of a benefit if its at all possible, but he wants to try it. So my question is, is this even possible?
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post #2 of 22
Of course you can't.

Each pin corresponds to a different function (power, ground, data). How would you propose flipping a bracket that isn't symmetrical and plugging something into it? Disaster.
    
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post #3 of 22
Quote:
Originally Posted by Senator View Post

Of course you can't.
Each pin corresponds to a different function (power, ground, data). How would you propose flipping a bracket that isn't symmetrical and plugging something into it? Disaster.

That's exactly what I was thinking. maybe you could if you made a custom PCI conector into a normal PCI but that's too much and, even with that, it may not be just possible. However, contacting a motherboard engineer may be the best idea to solve this.
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post #4 of 22
Quote:
Originally Posted by Senator View Post

Of course you can't.
Each pin corresponds to a different function (power, ground, data). How would you propose flipping a bracket that isn't symmetrical and plugging something into it? Disaster.
You could always make an interposer PCB
post #5 of 22
Possible? Sure. You'd need to have the pins reversed for the connector though.

Should he do it? No.

With proper airflow, the difference in temperature would be a few degrees at best, in a perfect system. Not worth it given the high chance of damaging the motherboard.

Something like this might be a better fit for what he wants to do: http://www.neweggbusiness.com/Product/Product.aspx?Item=N82E16816129055&nm_mc=KNC-GoogleBiz&cm_mmc=KNC-GoogleBiz-_-pla-_-NA-_-NA&gclid=CKvruf6XmrMCFSWoPAoduyMA6g

Or

http://www.amazon.com/PCI-E-Express-Riser-Flexible-Cable/dp/B004XD74MC
Edited by Mootsfox - 10/24/12 at 10:36am
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post #6 of 22
Quote:
Originally Posted by Senator View Post

Of course you can't.
Each pin corresponds to a different function (power, ground, data). How would you propose flipping a bracket that isn't symmetrical and plugging something into it? Disaster.

This is true. However, it may be possible if you used wires to correctly align all the pins with their original point on the mainboard's PCB. This would essentially require the PCI-e bracket to be left unmounted from the board itself. In the end, with alot of work, it could probably be done.
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post #7 of 22
could always tell him to go tech bench and having everything in the open
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post #8 of 22
That's an odd way to get extra cooling.. have your friend look at some barebones test-bench style cases if he wants more open air flow.

Your friend could consider a PCI-E riser listed in a previous post, but that will block access to other components on the motherboard, and may not improve cooling at all
post #9 of 22
Quote:
Originally Posted by Dyson Poindexter View Post

You could always make an interposer PCB

You could make an interposer for anything thumb.gif. Nothing comes to mind though. And it's not like that's a component that newegg would sell. Anything big enough for the end user to customize wouldn't be able to attach right (think pin connectors and wires like old laptop screen tester boards).

No. There isn't anything that your friend could do OP.
Quote:
Originally Posted by kulbida View Post

This is true. However, it may be possible if you used wires to correctly align all the pins with their original point on the mainboard's PCB. This would essentially require the PCI-e bracket to be left unmounted from the board itself. In the end, with alot of work, it could probably be done.

Your working towards the idea of extension cables (that already exist and allow what your talking about) or a custom interposer to mount and reroute the correct pins for grounds, data, power, hotplug detectors, SMBus clock and data, etc. That's not something that's available to the general user.

So not what the OP wants I assume.
Edited by Senator - 10/24/12 at 10:45am
    
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post #10 of 22
Not saying its worth it, or even feasible, but the PCIE connector is just a simple 164 pin card slot, of course it can be done. Something like this can be modded for this purpose since its flexible and you can just mod it to face anyway you want, but then you need to make some brackets to hold up the card.

Like I said though, it wouldn't be worth all the trouble cooling wise but sure would look cool and make for a crazy clean side window smile.gif.
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