Any one has experience with this type of cooling system on 4890?

It's "supposed" to be better. But it looks like they skimped on the VRM cooling. IDK how much that matters on that non-reference PCB design, but I've seen that same PCB w/ a VRM cooler.

I'd get this instead: http://www.newegg.com/Product/Produc...82E16814102841

I've heard that theres a mounting problem with that heatsink since theres no backplate and it can run extremely hot.

I really don't feel a backplaate is at all necessary for that card for pressure or PCB cooling purposes, when have you heard of the 4890 being incredibly hot period.

also heatpipes and the open cooling design is supposed to cool the GPu better (which i've read that card actually does) the only problem is it blows all the warm air into your case opposed to reference back slot blower designs