How do I initiate RMA? Do I need a registered email id ? ANy link to where I can enter serial number to see remaining warranty?
No, you don't need any registered email id for Gigabyte. No, you cannot enter your serial number anywhere to check. You have your invoice for that.
You just need to take the card with the invoice to the service center. I am surprised that no one has answered here yet. There are at least 50 members here who must have done the RMA. I have RMAED a Gigabyte 2070 super which was bought in 2019 and it was clearly out of warranty according to 3 years rule and I didn't have the invoice, but it was registered for an extended warranty, so I sent it to the service center, but I forgot to send them any proof of extended warranty. They still RMAed it even after 3.5 years. The card is up for sale right now with RMA proof.
All warranties from all brands start from the date of purchase. NO, brands don't ask for id proof or anything. It is a baseless rumor going on for the last 5 years. People have RMAED multiple cards from all brands and never faced any issue. Gigabyte has a very relax warranty policy. I also used to think that an invoice must have the govt of India seal along with a seal from air force, Navy and US army and it is invalid unless it has the signature of Modi so when I bought a Gigabyte card 6 months back, I also mailed them and asked if the warranty is valid. They sent me a textbook response and told me that the warranty starts from date of purchase mentioned in my invoice. They told me to take the invoice and card to the service center and don't bug them ever again. Same response from ASUS.
I had one card from Gigabyte which had serial number sticker missing and I still got a favorable response from them that they would still RMA it. That's gigabyte for you.