Times have changed, though, and Intel has now ditched gigahertz as a means to measure performance and switched to an abstract model numbering scheme. Meanwhile, AMD is still clinging on to its PR ratings, and some like Prime1 think they're making less and less sense. An Athlon 64 X2 4600+ isn't any faster than an Athlon 64 3800+ in single-threaded tasks, for example, and model numbers for the Sempron line are just plain out of whack. Should AMD retire PR ratings and switch Athlons and Semprons to a model numbering scheme like the Opteron and Turion lines, or are the ratings doing their job well enough? Whatever your opinion is, feel free to register a forum account and hop into Prime1's thread to speak your mind!