Gigabyte: Offers a 4-year warranty. 
ASRock: Generally considered reliable with quick warranty claim processing, often within 2 days. 
EVGA: Reputation for excellent warranties, though they are no longer producing GPUs. 
MSI: Offers a 3-year warranty. 
ASUS: Can have a reputation for denying warranties, but still a major brand. 
Palit: Known for quick warranty claim processing, within 2 days. 
Dell: Has a very low failure rate, especially for their enterprise/workstation cards. 
ZOTAC: Offers a 5-year extended warranty upon registration. 
Other brands: Sapphire and XFX produce AMD cards, and their warranty claim processing times can vary.