@Jyoti Yeah, it's because human brain had a billion years of head start.

Also human brain:

1. Runs on horribly sloooooow hardware. Neurons' latency is like TENS OF MILLISECONDS, that's slower than a 50's computer.

2. But all those neurons are all firing simultaneously. Human brain is infinitely parallelized. And how many threads does a GPU have? Like thousand? That's nothing compared to tens of billions of neurons all running in parallel.

But that's fixable.

@Jyoti

3. Also human brain architecture is SPECIFICALLY designed (evolved) to be a brain. Von Neumann computer architecture is designed as a device that sequentially reads memory in chunks by 64 bits, then another chunk, then adds them, and writes that chunk to memory, then reads another chunk, and so on. And the neural networks are emulated by that process using FLOATING POINT NUMBERS oh god how ugly and inefficient that is.

But that's also fixable.

@Jyoti 4. Human brain is really good at doing things we evolved for - running, gathering food, outsmarting fellow humans in social games, and also can learn new things like writing, reading and even doing a little bit of art, science, math and stuff like that. Progress is very slow though. A time that it takes for one average human to actually invent something new is like ten years or something? All we do is "standing on the shoulders of giants", repeating what other humans invented for us.
@Jyoti 5. But human brain can't learn for example how to meaningfully operate in 643-dimensional space. We can write that down mathematically, but we can't live there. Our brains are just not wired for it. Neural networks don't care, they learn EVERYTHING from scratch, they don't have a head start. Recognizing projections of 3d objects onto 2d images is as foreign to them as 643-dimensional space to us. And they do it pretty well.

@Jyoti Can you just look at trillions of pictures and be able to draw a new one like that? In MILLISECONDS?

Can you read petabytes of text written by aliens and IMMEDIATELY INTUITIVELY WITHOUT EVEN ANALYZING know their language and some basic facts about their world such that you can write a long poem in their language in a couple of seconds and real actual alien won't be able to tell?

@Jyoti You know what? We're so fucking stupid compared to computers. We're so stupid that we invented them and still with all our civilization can't figure out how to make them do what we want without making them learn from scratch on shit tons of data. Without making them learn 643-dimensional universes instead of just fucking programming in what we want. We're so hopelessly stupid.
@Jyoti Yes, human brain doesn't need infrastructure and runs on sandwiches. Oh, wait a second. Human brain needs human body that converts sandwiches into ATP and we need a whole fucking earth biosphere to produce sandwiches, don't we? Isn't that MUCH more complicated process than production of processors and power plants? We just getting it for granted and have zero idea how to reproduce it from scratch.