rtx 3080 tuf

I have a corsair HX1200 EVGA 3070 XC3 TUF 3080 OC My question is will all of them fit in the NZXT H710?

It only happens when the card is doing almost nothing eg. youtube vids or switching chrome tabs or word/python. Fans on each side ramp to 3000+ rpm (gpu-z). The card worked fine for two days when I mostly gamed. the third day I had to actually do some work when this issue came up three times...