RTX 4080 with a 750W PSU

[AlonIsrael]

Hi everyone. I just ordered a Gigabyte Eagle OC 4080. I'm using an i7 10700 and my PSU is a Corsair CX750W.
In the GPU's official page they mention 850W as the recommended voltage but in every Youtube video I've seen, the entire system power usage rarely goes above 400.
Do I need to upgrade my PSU or am I completely safe?

 

[arknor]

its 400+ whatever your cpu and the rest is using.

but there were 4090 reviews with an 850 watt psu so your probably fine

 

[Jay-G25]

Will be absolutely fine on a 4080 , they are pretty efficient and don't tend to use a lot of power compared to the 3000 series . My 4090 is a lot more efficient than my 3090 was and is often 150w less for he same fps ( ie 3090 using 450w , 4090 using 300w for same scene )

 

[Tired9]

According to Nvidia, power spikes are much more moderate compared to Ampere so you should be fine on 750W, though no idea if your old PSU is up to the task.

 

[Darujhistan]

No problems IMO. NV and AMD are both very cautious with their PSU reccomendations.