PSU for asus tuf rtx 3070ti gaming
I ordered a card for myself, so I’m thinking if a power supply is enough for me, recommended 750 if you believe dns .. SSD M2, SSD, 6 coolers in a case with backlight + dropsy with two coolers with backlight .. processor ryzen 5 5600x 32Ram ... THE UNIT IS STANDING ON 750Samson14
The recommendation goes to the noname Chinese. However, it is better to take more powerful ones - the presence of a large number of braids, and the 750 / 850 just has them.
750, depending on which one you have. Enough. In principle, the 3070Ti can be downvolted without a serious loss in performance. If the BP is a poor noname, aircule and collect it, recently bought, thermal take. That's better to change. Examples: DEEPCOOL DQ750ST, 750W Chieftec Proton, Pq850, DQ850, Super Flower, Corsair RM750x, 9 / 11 Watt Power Quiet at 750t.
And so, 750 watts is enough, the main thing is one connector on the video card - one braid, try to comply.
Marsj
Yes, but don't forget about short-term bursts of power consumption, when the power consumption of the GPU can jump up by more than 2 times. The 4000 series will be even worse. I discussed the topic with the guys on the tomshardware forums. Well, there is a video on this topic on Gamers Nexus. These massive bursts, unfortunately, are not taken into account. Their duration is estimated at 100 microseconds. On foreign forums, they check the quality of the PSU for the selected video card.
Therefore, it is important to take into account such surges, and select a PSU with a margin.
Spoiler 
A high-quality power supply will digest this. The checkpoint will cut down on protection.