What is the theoretical storage capacity of the human brain?

Syracuse University Professor Robert Birge estimated in 1996 that the human brain had a storage capacity of between 1 and 10 terabytes, with a likely value of 3TB (for comparison, high-end iMacs today come with a 1 terabyte memory). read more

The brain’s exact storage capacity for memories is difficult to calculate. First, we do not know how to measure the size of a memory. Second, certain memories involve more details and thus take up more space; other memories are forgotten and thus free up space. read more

The next theory (from the same article) estimates that the brain’s memory capacity is closer to 2.5 petabytes or 2,500 terabytes (equivalent to about three million hours of TV shows or about 2.2 trillion puppy pictures). read more