RTX 3070 on a 450W PSU -- only for booting

[Zalanji]

I got a second hand 3070 and I'd like to verify it baseline works (i.e. boots up, has display out and shows up correctly), but my current PSU is 450W (Seasonic G-series 450 watt, 37A on the 12V rail). I've got a new PSU coming next week so I can actually use it at full power, but I'd rather do this check sooner. Would this cause any harm?

I'm a little worried about the power spikes of the 30 series cards, though I'm pretty confident that idle power draw should be more than fine.

[Levent]

Its fine, I too have tried my 3070 with a VS450 for few hours. Installed drivers, played rimworld for a while then shut it down. Power spikes that you should be worried of only happens under heavy load.

[Hinjima]

4 minutes ago, Zalanji said:

I got a second hand 3070 and I'd like to verify it baseline works (i.e. boots up, has display out and shows up correctly), but my current PSU is 450W (Seasonic G-series 450 watt, 37A on the 12V rail). I've got a new PSU coming next week so I can actually use it at full power, but I'd rather do this check sooner. Would this cause any harm?

I'm a little worried about the power spikes of the 30 series cards, though I'm pretty confident that idle power draw should be more than fine.

To check if everything works the 450w will be enough. The card draws around 220-250w under full load ( more with the spikes of course )   The seasonic PSU is quality and has protection so the system will just shut down and restart if you overload it. No real harm should happen.

[Zalanji]

Thanks for the quick replies

[TylerD321]

I agree with everyone else here. You won't break anything just know your limitations and have reasonable expectations. Don't try anything too crazy!

 

Remember to swap out all of your power cables when you get your new power supply. You can fry your components if the pinouts don't match for both power supplies and you reuse cables.