Re: 2MB or 4MB
If you're talking GB as in term of ram, it depends what you're doing and the OS. For Win7 I would recommend 4gb, but for xp even 1gb will do just fine as long as you aren't doing any hardcore gaming (Crysis, Call Of Duty, etc.) or editing.
If it's MB as in cache on the CPU, I would have to see what processors they are to tell if it makes a difference.
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