Cooler Master Hyper N520 is defective on Intel motherboards

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The conglomerate of reviews on Amazon for Cooler Master heatsinks  
is misleading. The Cooler Master Hyper N520 is being sold with a  
defective attachment plate. The screws are permanently fixed in  
the wrong direction for Intel motherboards. There is a video on  
the subject on the Tube... Just search for (Fixing Intel i7  
retention plate on CoolerMaster Hyper N520). It's not just the i7,  
it's all Intel sockets with the Cooler Master Hyper N520. It's  
unusable unless you can modify it. The guy complained and they  
sent him another set of retention plates with the screws on  
backwards. And that was three years ago, they still haven't fixed  
it! Unbelievable.  

I bought it from Amazon in June 2014. Just got around to  
installing it. The small bolts with springs and fixed retention  
washers were assembled the wrong way.

That's a video on the subject from three years ago! Difficult to  
believe that they haven't corrected such an egregious mistake.  


This is important for some people. I shall be heard in spite of
any Cooler Master fanboys.  

Re: Cooler Master Hyper N520 is defective on Intel motherboards

John Doe wrote:
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OK, I've got the manual here.

    Hyper_N520_User_Manual.pdf  3,906,018 bytes

The screws in that manual look like they're removable.
Is that the same product as you got ?

I have an entirely different CoolerMaster cooler on
my current computer, one which blows downwards. Yet,
that mounting kit looks eerily familiar. I have the
X-shaped item "D" underneath my motherboard. And it
is held on with four nuts (item "K").

I think there was some black insulating material on the
X-shaped thing as well. So it wouldn't short out stuff
under the socket.

And to remove the heatsink, I have to pull the motherboard
and tray out of my case, remove the tray, then undo the nuts.
The nuts are what holds it in place, so it fastens from the bottom.

This is just going from memory, as it's been a number of
years since installation.


Re: Cooler Master Hyper N520 is defective on Intel motherboards

I'm not asking a question, Paul. As I said, and as the video also  
makes clear, the spring retention washers are not removable.

It's a simple and obvious manufacturing defect that Cooler Master
has failed to correct after at least three years of production.  

Re: Cooler Master Hyper N520 is defective on Intel motherboards

John Doe wrote:

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Not posing a question doesn't deter other folks from participating (and
here I am, too), especially if they have a similar story to tell or
something to add.

To add to Paul's post, I've had too many times when I had to repair or
alter something on the mobo that I know get cases where BOTH side panels
are removable.  That has saved me from having to pull out video cards
and other daughtercards, unhook all the cables, unscrew the mobo, and do
it all again to reinstall.

As to your problem, how can screws be "permanently fixed" in the
mounting bracket?  That means they won't screw (in or out).  Since they
screw, why can't you remove them and screw them in the other side of the
plate?  I'm surprised that the screws are even screwed into the mounting
plate rather than put into the parts bag with all the other screws and
parts.  Seems like them screwing in the screws into the plate is a means
of securing those screws during packaging and shipment.  I would think
it was obvious that the plate was bent out in the wrong direction if you
tried to orient it according to the pre-installed screws.  The screws
won't screw out of the plate so you can put them in the other way?

So after spending the money and installing the much heavier and bulkier
HSF, did you achieve more than 4 F degrees difference in the CPU die
temperature from before when using the stock HSF along with better
thermal paste, like Artic ceramic (the Silver is overpriced and
overkill), instead of the pre-applied thermal tape on the heatsink?

Re: Cooler Master Hyper N520 is defective on Intel motherboards

VanguardLH wrote:
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This is the Newegg picture of an N520 kit. This
shows the various upper arms and lower retention plate.

( )

Frostytech has a review as well, and this is a picture of the mounting kit.

In a picture here, you can sorta see how the screws fit into the arms.

Normally, you would have the LGA775 X-shaped plate installed under
the motherboard, but for some reason, this reviewer just did up
the nuts directly. Almost as if, like John, the thread wasn't
long enough to allow the plate to be installed. And the arms on
the top of the motherboard, are pointing down.

(,4.html )


I can see reference to an "N520 II" but no pictures so far.

The first version might have come out in 2009, so plenty of room
for bored mechanical people to change what comes in the kit.

The 1366 mounting kit was available as a separate item, and
even the screws on this one are removable. Two different threaded
sections visible. Larger thread goes into the arm. Smaller thread
for the retention nut on the solder side of the PCB.


Why do I look for pictures ? To see if we can track it down
to a particular SKU, identify "safe" versus "bad" product.


Re: Cooler Master Hyper N520 is defective on Intel motherboards

That's the way it's supposed to be. But that's not the way it is.
The bolts are on backwards, not like shown in that picture.  

Those bolts are spring-loaded and the springs are secured with a
very thin retention washer similar to a C clip. To stick the
retention washer on there, they just press it onto the bolt until
it passes a detent/ridge. To remove it, you have to destroy it or
at least bend it out of shape. You have to remove them in order to
reverse their direction so that you can have those plates sticking
down towards the motherboard. I think I explained this. It's
explained in the YouTube video.  

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