Yes, the limiting factor for bandwidth is generally the number of pins which are not cheap and you can only have few 1000s in a chip. The absolute state of the

Yes, the limiting factor for bandwidth is generally the number of pins which are not cheap and you can only have few 1000s in a chip. The absolute state of the art is 36 Gb/s/pin[1], and your $30 RAM could have 6 Gb/s/pin[2]. [1]: https://en.wikipedia.org/wiki/GDDR7_SDRAM https://en.wikipedia.org/wiki/GDDR7_SDRAM [2]: https://en.wikipedia.org/wiki/DDR5_SDRAM https://en.wikipedia.org/wiki/DDR5_SDRAM