Reddit user GaoHAQ (via VideoCardz) posted the GPU and motherboard defect rate for each brand that Swiss retailer Digitec sold over the last two years. That timeframe is an important factor as it covers the height of covid-19 and the cryptomining craze, which could somewhat skew the warranty case duration...
https://www.techspot.com/news/97425-retailer-reveals-most-reliable-graphics-cards-motherboards-warranty.html?utm_source=dlvr.it&utm_medium=blogger
https://www.techspot.com/news/97425-retailer-reveals-most-reliable-graphics-cards-motherboards-warranty.html?utm_source=dlvr.it&utm_medium=blogger