ram upgrade

artworks

New Member
I appreciate any thoughts on upgrading my ram. I just bought a refurbished Dell OptiPlex 755 sff. It's a dual channel, 1333mhz, 64 bit. It has 4 slots. My biggest question is when I upgrade the ram, should I get 667 or 800mhz? Should I spend the extra $ for the 800? How much faster would it really be? I'm not a gamer--just Internet, email, and some simple business stuff. I have read that if all 4 slots are filled, the ram will only run at 667?
 
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