Just received this email from EK tech dept.....
Hi Mark,
In order to use the EK-FC580 backplate you will need to tap six mounting holes in your stock cooler to M3 thread and then use the appropriate countersunk screws (I believe the M3x8 DIN7991 or M3x8 DIN965) should fit perfectly. Of course this will void the warranty on your graphics card.
Alternatively you could use M2.5x8 countersunk if you find them at your local hardware store. This way you will not void the warranty.
Hi Mark,
In order to use the EK-FC580 backplate you will need to tap six mounting holes in your stock cooler to M3 thread and then use the appropriate countersunk screws (I believe the M3x8 DIN7991 or M3x8 DIN965) should fit perfectly. Of course this will void the warranty on your graphics card.
Alternatively you could use M2.5x8 countersunk if you find them at your local hardware store. This way you will not void the warranty.


