Home-made EM shielding for PCIe Riser cable (Need input/Advice)

rynz101

Honorable
Feb 1, 2013
43
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10,540
I'll keep it short. The first time I wrote a dang novel lol

I have a Thermaltake F31 Tempered glass addition pc case. It has a vertical video card feature. I purchased a EZDIY PCIe x16 Riser cable. Apparently, Thermaltake's riser is terrible so I got this one instead. Powered, Shielded and re-enforced at the pcb.
The cable works great except for when I am running graphic intense games like Battlefield1. It's odd because I have not crashed playing Doom. If the game is intense, the card go's crashes. The crash go's like this... Black screen monitor, fans on the gpu turn off like the card just dies and my speakers blast the most annoying squal until I reboot my system. When I get back into windows my AMD Wattman settings default to factory even though I'm not overclocking at the moment.

Do you guys think this is EM interference? It's only crashing when I'm cranking all the juice out my rx 480 on intense games. I found some things I can try online like setting the PCIe mode to 2.0 even though my slot is 2.0. Maybe its 2.1 or some nonsense I'm not aware of and it may help. I dunno. My cable was pretty pressed up against my main board. I'll reposition it next time but most of all... I want to make my own EM shield with layered cardboard and aluminum foil. Like 8 layers of soda box thin card board with foil in-between each layer. Making a thick card and then placing this card between my riser cable and my main board. Would making an EM shield in this fashion even work? Do you think its worth a shot? Im convinced its EM interference. If you know of any other possible issues can you please let me know guys. I really want this riser to work. Its the reason I bought a whole new computer case. please and thank you
 
Solution
If the riser cable is designed properly, its outsides are already ground planes with the high speed lanes on internal layers. Adding more ground layers on top won't help anything. You may be thinking that the shielding built into the ribbon is too thin to be effective but keep in mind that your motherboard itself is made of ~0.004" thick copper layers and that's good enough for everything else on that board.

InvalidError

Titan
Moderator
If the riser cable is designed properly, its outsides are already ground planes with the high speed lanes on internal layers. Adding more ground layers on top won't help anything. You may be thinking that the shielding built into the ribbon is too thin to be effective but keep in mind that your motherboard itself is made of ~0.004" thick copper layers and that's good enough for everything else on that board.
 
Solution