I have an Athlon 2200+ Socket A that I have been using for at least 5 years now, and still going strong. For as long as I can remember it's always read at a speed of 1700. Just today, I was checking my specs to let a friend know what I had for my machine, and was surprised to see it was actually only reading a speed of 1300 on the clock. I have a second computer that i recently had cleaned out removing the processor on it. While I had done that I also did the same to my main computer as well. Got me wondering if I had accidentally switched processors by mistake since they are both matching sockets. Assuming this as a mistake, I switched the processors, only to find that the original processor in question was now reading at a speed of 1700 mhz instead of the 1300. The motherboard in my main is a newer asus, and the second computer has an older model. So why is it reading better speed on the older model, but not correctly on the new?