What power supply is good for 3080 + I7-12700k

[MissMagz]

Im not all that smart with pc part stuff so don't judge if this is a dumb question. I have a 3080 and an I7-12700k and I was planning on using the corsair 850 psu but neweggs power supply calculator suggests a 900-1999 power supple for the all the parts i plan on using. Is the corsair 1000 psu good enough? If not what should I go with? 

[PDifolco]

Looks like Newegg pump the figures to sell more expensive stuff 

A 12700K needs 200W tops, a 3080 around 350W on OC models, let's save 100W for the rest that's 650W

A 30% headroom leads to 850W needed

BITW my rig has similar or more needs with a 5900X and 3080, has more stuff with 4 drives, display screen, lots of fans, 2 AIO pumps + a D5 grade pump, etc, and has never experienced a problem with my 850W PSU

Just get a good one, mine a is a RM850x and I can recommend it (it's  A tier on psucultists and has only good reviews..)

[MissMagz]

I went ahead and put all my parts into another site and this one suggest a 557 watt cpu. there is no way that its that low right?! (i used cooler masters this time idk if thats good i just tried it lol)

 

 

[-rascal-]

4 minutes ago, MissMagz said:

I went ahead and put all my parts into another site and this one suggest a 557 watt cpu. there is no way that its that low right?! (i used cooler masters this time idk if thats good i just tried it lol)

 

 

 

The RTX 3000-series is known to have high transient spikes in power draw.

A quality 850W is recommended, so it can handle the power spikes.

Otherwise, when that power transient happens, it would trip the PSU, and it would shut the system down .... like if someone unplugged the power cord.

 

 

[8tg]

Those calculators exist to sell power supplies, and worse they try and advertise very specific power supplies.

The 12700k at stock draws under 200 watts in real load. With an OC you’re looking at 240-250 watts at the most.

Depending on the specific 3080, it can be up to 380 watts. Though the vast majority will use around 320-340 watts.

So total worst case peak synthetic load, like you have one of the obscenely high end 3080’s and a heavily overclocked 12700k, you’re looking at 630 watts for the two core components. Write the rest up as around 150 watts, drives, fans, maybe an aio, motherboard, ram, etc. 

780 watts, under an absolute worst case scenario where every single part of your system is absolutely tapped out, you’d still be fine with like a Corsair RM850x

 

Im running an i9 11900k at 5ghz with a 3070ti on an rm850x without issue.