At the end of last year, Puget Systems published a blog post titled "Most Reliable PC Hardware of 2021" and as is evident from it, the article talks about PC hardware reliability based on their failure rates. The piece covers processors, graphics cards, memory, and storage drives (SSDs/HDDs).
For the processor comparison, mainstream desktop CPUs, high-end desktop (HEDT) parts were considered. In the mainstream segment, AMD Ryzen 5000 series, Intel 10th gen Comet Lake, and 11th gen Rocket Lake were considered. Meanwhile, for HEDT, AMD Ryzen Threadripper 3000, Threadripper PRO, 10th gen Intel Core X, Intel Xeon W, and Xeon Scalable 2nd gen CPUs were used.
And according to Puget's data, it looks like the AMD processors were less reliable than Intel ones, as they tended to fail more often, though there was an exception as the figures also indicate that Intel's Rocket Lake parts had extremely high failures from the Intel camp.
AMD CPUs in general had higher failure rates than Intel, but we did see an oddly high rate of failures with Intel's consumer-oriented 11th Gen processors... which seems odd, especially next to the very low rates shown by the preceeding 10th Gen.
For those wondering about what the difference between a "Shop Failure" and a "Field Failure" is, the former includes parts that failed during testing and are similar to dead-on-arrival (DoA) components, while the Field Failure is a chip that failed after it was already shipped to a customer.
Source and image: Puget