complet photo disamble of 7720.

so, i put some new thermal paste on 7720 today .....here is some photos











here you really see why i replace the thermal paste to new fresh AS5...(stock paste is not very good)




and voila..............


now the gpu have a working temp around 45-49C instead of 55C.......thats good

 

I did the exact same thing on my 7720, and achieve the same goal, lower temps by 5-6 degrees... but looking at your last picture, damn, you put WAY too much paste there man. as soon as you will put the sink on those, it will spread all out of the CPU and GPU.

I know that paste is not electrically conductive, but it's somewhat slightly capacitive and could bridge close electrical circuits in a way you don't really want. And with all those surface mounted capacitors on top of the GPU close to the core, i fear that the amount you poured on there will spread up to those capacitors and with time, it could lead to some problems.

My 2 cents.

P.s.: I put 25% of what you used on there and achieved the exact same result.

 

it doesnt matter one bit...done it many time ...allways great result

second...if you screw the heatsink in right order AND WITH RIGHT PRESSURE......it gives no gap betweens the metals.

 

a tip........change your thermal paste...it doesnt matter if you use artic silver or MX-4.............JUST DO IT.

.......before (with stock paste i hade a temp playing bf3 in 1080p with medium/high settings = FPS around 40).......about +75 C on CPU..now i has max 68C..............even the GPU has lower gaming temp now...about 5-7 C

thank you AS5 ............temp monitored running Bf3.

 

This is all absolutely true. While damage is a long shot, it is definitely sloppy and a waste of product. Plus, if you ever get in there again, there's MUCH more mess.

 

first of all its way less paste as it looks like............when i applied the paste i pressed it out (its way thinner as it looks like on the CPU)

second, after i attached the heatsink i watched (in between) how it went................PERFECT, just a small among of paste around the cpu............so you guys dont have to worrie about me anymore..................the result is still the thing i looking for.............and it was a success.

 

I agree it's a success, i did exactly the same (replace with Arctic Silver 5) and i really lowered my general temps from 5-6C both CPU and GPU.

 

Is the GPU Boost bug solved after Reapplication of thermal paste .?

 

Very informative thread. How many screws did you remove to do this? Actually my main concern is the exhaust system. Owning previous dells like XPS M1530 I know that their heat sink and exhaust fins get choked with cake of dust every few months, and I need to open the system to clear it off, otherwise it doesn't matter what thermal paste you have -- If the exhaust fins are choked, then there is no way the hot air can flow freely out - CPU gets pegged at 700 MHz and GPU at 169Mhz to prevent damage.

 

It would be better if you do a video ....

 

Actually paste does conduct slightly and can mess up your mobo. I have had it happen to me and destroyed the motherboard. It should be a very thin coating.

 

Then why don't you get an air duster and dust off the fan if you already have to take apart your laptop to replace the thermal paste?

 

@KSMB

Could you provide more detailed pics on how to remove the top part where the keyboard is. All I see is a pic of unscrewing the bottom and then all of a sudden the top is unscrewed. I really want to replace the stock paste on the system, but I feel uncomfortable doing so without more guidance. Can you do a video that shows a disassembly of the system.

 

I imagine it's similar to the 17R:
How to upgrade and dismantle a Dell 17R N7110 - YouTube