^^agree with ridlyn^^
okay, as far as value ram goes, i dont know.
i have corsair xms and i run stock timings and overclock it to about 420mhz for my everyday usage.
as far as TOTAL overclock, you will be able to get more out of the 165, i.e. you will probably be able to get it to 2.7ish from stock 1.8ghz.
the 4200 you will not be able to go past 2.7-2.8 with that ram using a divider even. plus i just don't think a 4200 will boot past 2.9+, at least i have never been able to make mine do it.
as ridlyn says above the c2d can clock to 3+ without having to use a divider. so, if you have the money and really want to overclock, c2d is the way to go.
the amd's will give you great results, but if you are wanting to go extreme you would be better off with a c2d.
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