you can use molex adaptator to get 8-pin connector ;) RX 5500XT is ok, i'm owning a 5700XT and i'm happy (>2070 btw) Need to see the brand and the exact model of your 5500 to give you a straight opinion Send me PM or discord me
165 + 77 + parts = 300 W approximatly, so yes your psu could suit ! 80% of 400 W = 320 W So you will reach the limit of your psu capacity ^^, np it will run smooth. if no OC of the GPU, it's fine ♥
RTX 2060 will suit easy, just need to know what's the power of your PSU if > 600W no problem ;) Also check if you can grab a RX5700 XT for th same price, this card will be more powerful https://technical.city/fr/video/GeForce-RTX-2060-vs-Radeon-RX-5700-XT P.s :: your CPU is "K" or not ?
Merci mes vieux lascars ♥ çà fait plaisir de savoir que vous êtes toujours là ! çà vaut de l'or ;) Thx a lot my mates ♥ it's a pleasure to know that you're never so far ! it's priceless ;)