Overclocking
For overclocking, I have kept the same procedures I used for Intel's 10th generation. I left the "Gear" setting on auto for memory overclocking. Every board tested so far has used "Gear 2" when pushing past the 3600 MHz XMP speed for my Trident Z Neo kit.
The ASUS ROG STRIX Z590-I Gaming WiFi showed a fair bit of headroom for overclocking. I was able to achieve 5.2 GHz at 1.38 V core voltage on my i9-10900K, but only 5.1 GHz stable on my i9-11900K sample.
Overclocking is largely limited by temperature because the Intel Core i9 processors will overpower any ambient cooling solution. Depending on settings, the system will either crash or severely drop frequency.
For memory overclocking, the ASUS ROG STRIX Z590-I Gaming WiFi did well, reaching 3900 MHz stable at XMP timings and voltages on my Trident Z Neo kit with my 10th Gen sample, and 4000 MHz with the 11th Gen sample.