"Anthony Acri" wrote in message
...
I have 512KK DDR ram. My son instead of bringing anoher chip of 512K
bought 2 more. Is it any advantage to put up to 1.5 megs of ram or 1.2
should be okay?

I don't really understand the question. Where do you get "1.2"?

1GB of RAM should be entirely sufficient for most programs, including flight
simulators, but there's no harm in having 1.5GB instead.

There are issues related to memory performance depending on your exact
motherboard configuration and the number of DIMMs installed, but in all
cases simply having the memory at all is a much more significant performance
change than whether the memory is operating at full speed.

Pete