The heatsink itself is very big, but not in an obstructive way, the Hyper6 expands in height and towers over your whole main board, if I were an Ant looking for the highest spot on the main board, the Hyper6's cosy top would be it.
As mentioned before, the weight of this heatsink is rather worrying; 1kg of pure copper hanging from your motherboard should be securely fastened. That's why they urge you to remove the default P4 bracket and use their black plate enhanced one.
The Hyper6 can be used on both Intel's P4 platform as AMD's A64 one, providing a nifty back plate and mounting bracket which serves for both. Although you might want to keep an eye out when installing the bracket on your P4 motherboard, as the A64 lips can obstruct some parts on the main board’s backside.
Easy tool less installation, makes placing/removing the Hyper6 a 1 minute job
I ran into some problem with an Asus P4C800 board. It seems the Cooler Master bracket simply doesn’t fit this board unless you remove the AMD lugs. Asus luckily provides their own black plate enhanced P4 bracket, since the test setup was lying flat (desktop style) I used a plug and play bracket which I got from an Abit IS7 for testing.
As you can see, the bracket simply doesn’t fit.
For those doubting if the Cooler Master bracket is any different from a normal Intel one, these 2 photos should clear it up:
Exact same dimensions, no difference at all!
After attaching this big mofo to the motherboard you only have the screw on the FAN and you're done. The fan can only be installed in such manner that air will blow through the fins, the mounting holes make sure of that as it's impossible with the included mounting screws to install the fan the other way around. I had no problems attaching other type of fans to the Hyper6 though and even with a large 38mm Tornado fan the heatsink+fan combo didn't obstruct any items on the motherboard, thumbs up at the research department @ Cooler Master for this.
However the main problem with the Hyper6 is the massive weight, moving your computer around with this heatsink installed is strongly
discouraged, one reviewer at MyWORLD Hardware
ended up with a dead Abit IS7 after tugging his PC around.
So now that the Hyper6 has gone through our quality and health check we are ready to push him into the ring, where our trusty SP-94 is becoming quite impatient...