[smallerize]

Browsers use available RAM for cache, but they don't require that much. Firefox officially supports running on Macs down to 512MB of RAM. It will just be slower.

[nottorp]

Try opening a google spreadsheet in 512 Mb ram.

[smallerize]

Interesting, what happens?

[nottorp]

Whatever happens will take a while, since the one google docs spreadsheet that I keep open - which isn't complex - uses 399 Mb just for its own tab.