calculates

Is there any software where math problems can be typed, like matrix, & presented much better other than MS Word. I'm not looking for a software that calculates the problem, but a software that has tools to easily write down the formulas and diagrams better.

How do we calculate the GHZ speed in AMD.I mean for Example an AMD Athlon 64 3000+ calculates to how many GHZ ,also AMD 64FX 55 calculates to how many GHZ Whay does AMD not specify the GHZ speed. And lastly what is the latest processor released by AMD and what is its GHZ.