[CDSlice]

It only works because on modern consoles the RAM is soldered directly on the board and so the data doesn’t have to travel across PCIe lanes. Doing this on a normal PC would have horrific performance. ARM Macs do have this architecture but you pay for it with not being able to replace any individual components for upgrades or even repairs.

[blibble]

you can have sockets/slots for your RAM without it needing to be on the PCIe bus

any PC would be an example