Alright I disassembled that part of my 7700 tonight and believe I've found what you were talking about. Here's a photo for anybody else interested:

So all you do is dismount your video card from the heat spreader. The video card is encased within a metal enclosure as pictured above, it can be divided without tearing the orange pull which _is not a seal_. It's just to make it easy to detach your video card. You can remove it just by spreading the enclosure along it's divide with your fingers (if there's a sticker just pull it out of the way with your screw driver, you don't even need to break that either).
I've been monitoring my gpu temperature with GetThermal and it does seem to be running 10-15 degrees C cooler than before. My normal operating temperature was previously 76 and that's with the fans running at max and on a cooling bay, currently it's at 64. Just by putting my hand across the side vent I can tell that this machine is doing much better, I'm not certain it'll be able to handle games now but at least there is an improvement.

So all you do is dismount your video card from the heat spreader. The video card is encased within a metal enclosure as pictured above, it can be divided without tearing the orange pull which _is not a seal_. It's just to make it easy to detach your video card. You can remove it just by spreading the enclosure along it's divide with your fingers (if there's a sticker just pull it out of the way with your screw driver, you don't even need to break that either).
I've been monitoring my gpu temperature with GetThermal and it does seem to be running 10-15 degrees C cooler than before. My normal operating temperature was previously 76 and that's with the fans running at max and on a cooling bay, currently it's at 64. Just by putting my hand across the side vent I can tell that this machine is doing much better, I'm not certain it'll be able to handle games now but at least there is an improvement.






