I want to build another computer super cheap and I only want to spend about $70 shipped on a new MB + CPU. I have seen on PriceWatch the Althon Slot A 750MHz and the Duron 950MHz bundles for $65 and was wondering which one would give me the best real world performance. I know there is 200MHz difference but wouldn't a real Athlon outperfrom a Duron or is MHz king?