Question 650watt enough ?

Jun 22, 2019
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so im getting a EVGA 2080TI XC HYBRID. my system has a 8700k oc to 4.8 1.18volts
my current powersupply is this ....
https://antec.com/product/power/eag-pro650.php

do i really have to buy a 850watt psu ? will my system not be stable with this 650watt that i currently have
for the last year i have ran a 1080ti sc black from evga with max oc, and not many issues, is the 2080ti evga hybrid that more power hungry than the 1080ti. please advise .