

If your system starts swapping, that's the sign that it's severely need more RAM. You never ever want swapping, swapping is only there for so the system doesn't start killing processes if it ever runs out of memory, but you don't want it to ever be filled with anything with day-to-day usage. These emulators are pretty memory hungry, and Eclipse aren't lightweight by any measures either. Specifically with Android development though, you will be running the emulator and probably multiple instances of the emulator at the same time. But the only difference in the two laptops are not just the RAM or the CPU though, the old laptop is spinning a 5400rpm disk platter while my new one uses solid chips.


I don't program in Android that often, or even use Eclipse regularly, but I know that in my old 1GB laptop, Eclipse takes forever to load and is very sluggish, while it loads pretty much almost instantly with my new 8GB, is almost flawlessly smooth.
