Yes — these are compatible
Yes — compatible: 16GB DDR4 (2x8GB) with Z690. Z690 boards ship in DDR4 and DDR5 variants — make sure your specific board is a DDR4 model. Live eBay prices.
Z690
16GB DDR4 (2x8GB)Cheapest tracked eBay listings across 7 markets, refreshed each scrape.