This noise is most probably coming from the PCIexpress connection, not from a bad shielding (which is most of the time pure placebo)
The best you can try is to put your card in another PCIex port, hoping it gets less noise, as a 1x PCIEx card can use ANY PCIEx port (even 16x, smaller fit in larger ones)
You can try to switch your card power connector for one which isn't connected to any other (direct powersuppy to card with no other feeding)
Only Evga can truly resolve this issue by reducing input noise coming from both PCIEx and power using filtering components on the card.
Perhaps on the next one?