Just musing, but u know that vram memory pool in system memory that vega does? Well that could work both ways - maybe. If the gpu can use system ram, why cant the cpu use hbm2 vram? its like the cpu has a huge l4 cache. hbm2 is ~500GBps on the upcoming vega gpu card it seems. Ryzen w/ 3000~clocked memory is ~42GBps. A 16 lane i/f to 10x faster ram for cpu use under some circumstances could be very powerful.