100%. Soldering RAM makes the engineering quite a lot easier, prevents a RAM module vendor from making profit, and gets rid of an entire assembly step because n

100%. Soldering RAM makes the engineering quite a lot easier, prevents a RAM module vendor from making profit, and gets rid of an entire assembly step because now you no longer need to install the RAM module. The downside is a lack of flexibility, because you are now committed to a very specific RAM chip and you need to spend effort if you ever need to change that - rather than just plugging in one of a dozen modules.