Chris21010troy8dI usually use Arctic Silver 5 but I hear Arctic MX-4 is good too. I believe the thermal pad kit does come with some thermal paste as well.I would avoid conductive thermal pastes like arctic silver for gpu aplications, as there isnt a heat spreader on the gpus and too much can result in shorting the parts right beside the gpu.
troy8dI usually use Arctic Silver 5 but I hear Arctic MX-4 is good too. I believe the thermal pad kit does come with some thermal paste as well.