i have to mention this but despite what i have said to Thermalright, they refuse to acknowledge that they are not compatible. i received two HR-09 Type 4s for review for my EVGA 790i reference board. the heat sink fits perfect at the rear I/O panel. the coverage isn't quite 100% but it is more than enough and quite a good mount. the pushpins line up perfectly and installation is 10 second job.

the top bank, however, is a different story. the heat sink fits, but the pushpins don't line up with the one hole. the brackets for the pushpins offset the pushpins to either the top or the bottom. this is fine for both the rear I/O panel heat sink, and the one hole for the top bank...but the other hole towards the middle of the motherboard is located directly in front of the heat sink. it is not offset to the top or bottom like the brackets for the push pins. here is a photo...



i have looked this over a million times and there is just no way for it to work. Thermalright disagrees and said they mount fine on their sample board?!? i have requested photos from them of their heat sinks mounted on the top bank and am waiting to hear back. it is possible that they have two sets of brackets and i simply got both of the same brackets for the rear I/O bank...but their site only shows the same brackets i have and are shown in the photo above. they also do not have any photos on their site of the top back having a heat sink mounted to it on the reference 790i.

just want to save someone from wasting money and not looking to start a Thermalright bashing thread. they just obviously missed this, or, they are working with a revision of a board that had the same mounting pattern for both banks.