Performance comparison of CPU: 286-25 vs 386DX-25 vs 386SX-25 \ VOGONS
TPU's Nostalgic Hardware Club | Page 357 | TechPowerUp Forums
AMD Am386DX-40 CPU released by AMD in March 1991. It sold millions of units, positioning AMD as a legitimate competitor to Intel, rather than being merely a second source for x86 CPUs :
Is all-in-one computer durable? How long will it expect to last if not overused? - Quora