So the old macbook 13 inch of my girlfriend that has a 2,4 ghz core2duo of 2010, has a faster connection than my retina macbook mid 2012 with 2,3 ghz. The processor indicators are there just to give some info on the models, i know this has nothing to do with connectivity. I checked in terminal how the connectivity is, and the RSSI levels are both on -79, this is not much, but this works quite well on the macbook of 2010. I disabled bluetooth to try if there were difficulties here with connecting, didnt help my retina in getting a better connection. Major differences between them: - the retina one is running yosemite 10.10.1, the older one is running 10.9.5. - There is different hardware in them, but this should't matter right? I hope you guys have a good tip! The wifi is on 2,4 ghz by the way. It is in a populated area, so more routers are active. But if it works fine on the old one, why shouldn't it on the new one?