Also see this thread for tests on a greater range of devices.
for i in chacha20-poly1305 aes-128-gcm aes-192-gcm aes-256-gcm; do openssl speed -evp "$i"; done
for i in chacha20-poly1305 aes-128-gcm aes-192-gcm aes-256-gcm; do openssl speed -multi $(nproc) -evp "$i"; done