Quote Originally Posted by Big Myke View Post
If the EK 480 blocks are fully compatible... what could EK possible do to change their blocks for the 580 other than branding "580GTX" on the block?
Change fully to for the most part...

EK 480 block uses PCB hole to mount for VRM contact, 580 = no hole, block may bend the card and may not contact VRM's

Memory on 580 also shifted on the right side up about half an IC, you will get contact but only have of the IC...if you use a thick thermal pad that shouldn't be an issue.