I have a Gateway 6800-01e. When I look up the max RAM it says I can use PC3-8500 so my question is could I put PC3-12800 in and it just run at the lower speed?
Can try, some 1600 sticks these days default to 1333 and may not play in the 1066 specced slot, sad part is most pre-built computers don't allow for manual changes to DRAM