Old 1000w PSU for 5090

I was planning on buying a 5080fe but they sold out instantly, I somehow managed to refresh at the correct time and snagged a 5090fe! Now I'm worried my 7 year old EVGA G1+ SUPERNOVA 1000W PSU isn't going to be enough. Pc part picker thinks my system will use around 900w of power maxed out. Will I be safe? Or should I think about upgrading in the next few month's?