13th generation Intel Z790 supports Optane storage options.
13th generation Intel Z790 supports Optane storage options.
no one mentioned such a setup publicly, and the information seems inconsistent across sources.
I think Optane caching isn't available and I've faced problems getting it to function on the 12th generation with Z690. However, Optane drives are essentially NVMe devices and should operate normally on these platforms. You can install and boot from Optane without issues or use them as a regular storage solution.
You're looking to boost your HDD performance. You've explored options like installing a small SATA SSD for L2 caching, similar to using a solution such as Primocache with a budget SATA SSD.
If it's a gaming hard drive, Optane Memory isn't the best choice. The caches are quite small, which limits how well they cover the data. A larger SSD paired with Primocache would perform better, although I haven't used that setup before. If you're not playing games, think about what data you need to improve. It might be worth investing in a bigger SSD for direct use instead of relying on caching.