Help with replacing stock thermal paste in my GPU

[Yassassin]

Hello LTTians,

                       I own a GTX 760 which I ordered when it was initially released, for past couple of months I'm facing this issue. Whenever I play game at highest settings (which my GTX 760 can handle) it'll crash after sometime, if I turn on the air conditioner in my room it'll run without crashing in the highest setting, if I play without turning on AC, the game will keep on crashing until I lower the settings to 1080p low. My guess is the thermal paste would have gone bad, I'm planning to replace it with some after market good thermal paste/compound. Please suggest me some good thermal paste/compound from the below website list, thanks in advance.
The IT Depot

Amazon India

[keskparane]

Basically just look for the paste you can afford with the highest W/mK.

Consider that a conductive paste will have higher W/mK but because it is conductive you have to be careful that you don't short out any electrical connections.

For non conductive paste expect something in the 4-12W/mK range

[AkSo2504]

i used mx-4 and it was good