At 1920x1080 with 32-bit color, the framebuffer is close to 64MiB. This will typically be refreshed at 60Hz, requiring 3.7GiB/s of memory bandwidth.
You're wrong. 32-bit is 4 bytes, so 1920*1080*4 is 7.9MiB/frame, 474MiB/s at 60FPS. With 20GB/s memories is not such a big problem. Of course, a dedicated bus and memory is better.
For economics to be a science there also must be a way to test hypotheses. To date I haven't seen anything like this. So at best economics is wishful thinking, IMO.
Economics is full of ad hoc models, many of them in clear contradiction. I agree also with your signature: yes, debt is slavery (I can not yet believe people accepting 30-40 years mortgages, being some kind of neo-feudalism).
"Marriage is like a cage; one sees the birds outside desperate to get in, and those inside desperate to get out." -- Montaigne