It's good to know that I'm not alone in developing or testing in old computers. I've was almost ashamed to "confess" in this forum that I still use a lot my beloved 400 Mhz K6.
I particulary do not use a fastest machine for developing and a slower one for testing because I test a lot when developing, so it would be imposible to change machines every so often.

>We develop on P4s and test on the old Pentium IIs under Win98 SE.
>
>>Selim, maybe my answer has nothing to do with your question, but I do not care so much about the processor. I even like programming in old computers, as you have a great baseline on how performance will be in your final application. Actually I do a lot of development in an old 400 Mhz. AMD processor with 192 MB of RAM (don't laugh).
>>
>>Try to buy the greatest monitor your money can buy (I consider 17 inches the minimun, being 19 inches more adecuate). A big monitor helps a lot when developing and you don't get an advantage over the final user (I limit development of forms to 800x600 resolution).
>>If I have to develop for a large dataset, the I reduce the size of the dataset proportionally so that testing don't consume that much time and I still know how long it will take for the end user. At this point you may ask why don't I use a more powerful computer and use the complete dataset? The anser is that there are a lot of operations and activex or COM components that are very slow on 3-4 year old computers, and you will only notice that on old hardware; by the time you take the application to the client for first real world testing sometimes it's too late to rewrite your code (or too expensive).
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>>Besides, I spent a lot of time writing code and testing small portions code and interface (I never wait to have a big code of block or a complete form to test it, I go little by little), and for this purposes a "not so fast" computer is more that adecuate (actually I don't think I would go faster with 3 Ghz, although I would like to work with 1600x1200 resolution).
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>>And if I can be of any help, I have been working with AMD processors for 5 years and have not had any problems with them.
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>>HTH.
>>
>>>Maybe this ain't the best place to ask this, but since there are so many "brains" and "knowledge" here I dear to ask.
>>>
>>>I need maybe some link where i can compare a Duron cpu vs. the other procesors, I need to know how can I know the equivalent to intel of a Duron or amd procesor. I looked at amd site and didn't find anithing.
>>>
>>>any living experience with using this procesors? how does Windows 2k or Xp behave? any bewares about VFP and duron cpu's?
>>>
>>>TIA