I want to have an Optane features with my Ryzen build: high TBW and high I/O. Disk space irrelevant (like MEMPEK1W064GA, 64GB would be enough for me). And it would be nice if I can utilize the full power of my free PCIe 4.0 lane. Now I have an PCIe 3.0 x4 NVMe 0.5TB main disk and that's enough for my data, but with Optane-like disk I can speed up caches (Swap / L2ARC / ZIL / pagefile.sys / etc.) and don't torture limited resource of my current disk. What can I use?
Yes, I know that Optane is full hardware feature (not only PCIe, but also chipset and CPU). But anyway...