So a couple weeks ago, i got a gtx 560 ti by Zotac. However the gpu is overheating waaayyy too much, (70 degrees celcius while running starcraft 2) so i want to refund for a better one. The problem is that i threw away the anti-static bag accidentally. Does that void my warranty?
Throwing away the bag does not void your warranty but you will need to put the card in an antistatic bag if you want nVidia to accept your returned item.
If you RMA your card, the manufacturer might offer an advance-replacement option where they ship you the replacement first and you ship your defective card back using the replacement's packaging. This is a simple way of making 100% sure your return packaging meets all manufacturer shipping requirements.