Memory Compatibilty DDR2 800

[dennistheman]

Hi all,
i have a simple yet tricky question
i have a pair of 1 gb DDR2-800 memory sticks (2 gb total) with 2.2 V and a 4-4-4-12 timing. I wish to add another 2 Gb in the form of 2x1Gb. Can i just take any DDR2-800 memory or does it need to have the same voltage? same timing? please help me!
Dennistheman

 

[chupacabra]

any ram will do, but probably the first sticks you already have will get the same timings as the new ones ( which might be higher)