My T2 850 has been powering my 9900K/1080i FTW3 rig well the last couple of years.  Can it power the FTW3 which I heard can draw serious power spikes?

magbarn
My T2 850 has been powering my 9900K/1080i FTW3 rig well the last couple of years.  Can it power the FTW3 which I heard can draw serious power spikes?

 
there's a thread of PSU's that people are using that seem to work.....
 
https://forums.evga.com/We-need-to-have-a-thread-of-what-PSU-people-have-and-RTX-3080-or-3090-and-is-WORKING-m3118557.aspx
 
but if it's an older PSU, it may be time to buy a new one, if you can find one.
 

I would say an upgrade isn't necessary, but you may want to consider it at some point when you can.  Even at a pretty heavy OC on the 9900K, you're only going to be hitting around 170-190W under maximum load, which you won't really see in games.  Add to that the 3090 drawing ~420-500W under heavy load, and you're almost at 700W draw just from those... then you add in your other components, drives, fans, RAM, etc... I wouldn't say 850W isn't "enough" but 1000W would be better and more efficient as long as you get a Platinum or Titanium rated PSU. 
 
Best of luck.

you should be ok ,  it is an 850 Titanium rated unit.... but prepare yourself in the potential need of a 1000W sooner than later

I'm currently using a Corsair HX850i with the 3090 FTW3 Ultra hybrid and a Ryzen 3900XT and have not had any issues, so I would say that for now you are safe. Long term you'll probably want to get a 1000w PSU to be on the safe side.