Some clients have several hundred page long brokerage statements. Tens of thousands of short term transactions. Even at 16GB, RAM was maxed out converting them to pdf's, which we need in order to attach them the 1040 upload to the IRS and the appropriate state returns as needed.I guarantee you that was because of the SSD, if done at the same time.
Adding more RAM generally won't increase speed. You'd have to be maxing it out for it to do so meaningfully.
God bless IT hardware and programmers. I just have to know and apply tax law. >B^*