The Enthoo Primo was design shifted therefore it's a little different than other cases. There is a wider gap clearance on the rams/8pins connector which give support more thicker radiators depending on different configurations. We only guarantee that it will support 70mm thickness radiators with push and pull configuration. But please check our FAQ section for future update compatibilities.
Hi, yes it will support Dual SLI GTX780(or all 10.5") cards with a maximum of 60mm diameter reservoir installed on the bracket. Unfortunately, that will only goes to the motherboards on the first 4 PCI-E slots, where first slot of the PCI-E has to be PCI-E 16x.
@MrJokertime1 Thanks for having interest in our product! Phanteks products will be available at ~mid October in the US. Cheers!