I doubt there are any brands offering International warranty. Regarding price vs lack of warranty, check if the price difference makes sense to lose warranty. Like I personally won't buy say a 60k 4070 Super from outside India for 50k (assuming USA) to save some money & lose warranty. I feel PC parts are the cheapest in USA, might be wrong, so you check & take the call yourself.
Stuff like CPU, RAM & SSD are known to be very reliable & rarely fail. These can be considered from USA IMO. There are many items that aren't available in India, like the $220 5600X3D for instance, these can be considered if it makes sense to you.