According to Chris Chatham at Developing Intelligence, the brain-computer metaphor has lead to a lot of over-simplification in our thinking about our thinking. "An unfortunate legacy is the tendency to seek out modularity in the brain... the idea that computers require memory has lead some to seek for the 'memory area,' when in fact these distinctions are far more messy." We're now learning that regions cannot be associated with a singular function (i.e. the frontal cortex as "the place where personality occurs").
The brain is not a storage dump, and consciousness is not a place. Synapses are also far more complex than electrical circuits. Neither processing speed nor short term memory capacity are fixed, whereas RAM is.
Via Sakis Koukouvis