So that is better efficiency that Radeon Vii

I'm running VII at 91MH/s
Core: 1760mhz
Mem: 1000mhz
VDDC: 940mV
213 watt gpu only

Efficiency 0,427 MH/W.

Pros 5700XT vs VII:
Better efficiency
Cheaper price per MH/s ($699/91MH/s=$7,6 Radeon Vii vs $349/51MH/s=$6,8 cheapest Radeon 5700)

Pros VII vs 5700XT:
Fewer cards total in rig
Cheaper price per MH/s than RX5700 if you want RX5700 with better third party cooler ($375/51=$7,64 per MH/s

Sources of prices^*:
VII: https://www.newegg.com/asrock-radeon-vii-16g/p/N82E16814930012
RX5700: https://www.newegg.com/asrock-radeon-rx-5700-rx5700-8g/p/N82E16814930019
RX5700 third party cooler: https://www.newegg.com/msi-radeon-rx-5700-rx-5700-mech-oc/p/N82E16814137466?Item=N82E16814137466

_{*I'm not from the US so i have no clue if newegg is a good place for buying cards and have reasonable prices.}