AMD never tells what the clock speed of the processor is. They go like 2500+ because they think it runs like a 2.5Ghz Pentium 4. But wait a minute, clock speed is not the only thing that matters. Let's say that you have a Pentium 4 2.5Ghz 1GB of DDR RAM, 800MHZ BUS speed, 1024 cache speed. Then you take a Pentium 4 2.5Ghz 128 RAM, 266mhz BUS, and 128 cache. They are both 2.5 ghz computers but they don't run the same. If you had these 2 computers and an AMD 2500+, which one will you compare it to? My point is that AMD judges Pentiums by the clock speed, so if I want to buy a computer I don't know if it is AMD or P4 because I don't know which one is faster since that 2500+ doesn't tell me how fast it performs.