chizow

ShockTrauma

The stock Northbridge heatsink is in the way of putting in a tv tuner card (really just that protrusion that points towards the pci slots is in the way). Has anyone used an aftermarket heatsink and can recommend one? I have the 760 board. I was thinking of the thermalright hr 05 ifx as a replacement. has anyone used this heatsink? 

http://www.newegg.com/product/product.aspx?item=N82E16835109018

I've used the HR-05 IFX on an Asus P6T X58 board and it is incredibly effective with just passive cooling, dropped my NB temps at least 10C under load.  The 760 heatsink is very high quality however, so I would not expect as much difference on the Classified, but it would address the clearance issue you're concerned about.
 
I would also agree with Ty_ger07 and just use any of the other PCIex16 slots first unless you're out of slots or you want to try and keep everything at x16 for 2-way SLI.  I'm currently in a similar situation because my x1 sound card doesn't fit in the top slot and using it drops my two main PCIEx16 slot bandwidth down to x8/x8.
 
Here's a pic I have uploaded to give you an idea of what the IFX looks like mounted on my P6T, I'm not positive there's enough clearance on the 760 due to slight board layout differences, but there should be.  Basically, as long as you don't have anything crossing the vertical plane of the green chipset package, you should be in the clear.

 

MJinZ

Not that simple. You have an ICH too and other chips on that heatsink. The only reasonable option is to watercool.

760 NB cooler only covers the X58 and the ICH10R, no NF200 to worry about.  There's also a separate heatsink for one of the VRMs.  You can buy a flat SB cooler for ~$13 and there's mounting holes there too, but realistically, you can just run that SB uncovered as it doesn't even get warm under normal use.