List of Eight Stream Hardware

802.11ac/ax supports up to 8 spatial streams. Four-stream implementations are becoming more common
 * in the latest 802.11ac/ax hardware but some eight stream hardware has been announced.

Wireless Routers
A list of all 802.11ac/ax routers that have property "WI1 S streams" or "WI2 S streams" equal to 8

Qualcomm Atheros

 * IPQ8074 eight-stream AC, four-stream N

Quantenna

 * QSR10G (Wave3) Family

Misc. links

 * Quantenna Developing World’s First 10G Wi-Fi For Maximum MU-MIMO Performance on Qualcomm (archived)
 * 802.11ac MU-MIMO: Bridging the MIMO Gap in Wi-Fi on Qualcomm
 * 802.11ac Demystified on Xirrus