Prebuilt 14900kf rma

Hi i just had to rma my cpu from a prebuilt abs system. They said they are going to replace it with a tested new or refurbished i9 14900kf. Im a bit apprehensive because how can I tell if this refurbished cpu has experienced degradation like all the others? Anyone have experience with these type of returns? P.s. im lucky they are doing this to begin with the warranty ended over a year ago.