My 2011 Air has 4gb and it's too little. 8 would be fine in it. But I wouldn't buy an 8gb machine today. Swapping's also not as big a deal on SSD machines, as

My 2011 Air has 4gb and it's too little. 8 would be fine in it. But I wouldn't buy an 8gb machine today. Swapping's also not as big a deal on SSD machines, as it used to be.