[SOLVED] Is a 1000w PSU sufficient for a an RTX 3090 and an i7-14700K with an AIO ?

[ccoo84]

Hello I just bought a i7-14700K to upgrade from a i7 7700k because I got a great deal on it.
I have a EVGA Super Nova P6 1000w PSU, & I heard that the RTX 3090 has high power spikes under load.
Will the 1000w PSU hold the new CPU & my GPU. I really don't have the money right now to get a new 1200 PSU.
I haven't installed anything yet but my thought is it should be ok or at the power limit threshold.
I have a AIO Corsair H100x Water cooler for the CPU if that helps.
Thank you in advance.

 

[Lutfij]

Due to transient load spikes, you should look at a 1.2KW or higher wattage, reliably built PSU. Gamers Nexus did a video on it.

I have a EVGA Super Nova P6 1000w PSU,
How old is the unit? Even if it was brand new, I'd advise against using it.

 

[LordVile]

Due to transient load spikes, you should look at a 1.2KW or higher wattage, reliably built PSU. Gamers Nexus did a video on it.

I have a EVGA Super Nova P6 1000w PSU,
How old is the unit? Even if it was brand new, I'd advise against using it.

PSUs are built to deal with short spikes. You’re also highly unlikely to load up both the CPU and GPU at the same time especially in games

 

[ccoo84]

The PSU is about 4 years old

 

[--SID--]

Even if it was brand new, I'd advise against using it.

Why?

 

[ccoo84]

I seconed that I would like to know what it would do also. Thank you.

 

[geofelt]

Since you already have a 1000W psu, why not try it and see how you do?
With a 14th gen processor, see that your bios is current and do not indulge in voltage manipulation or overclocking.
There is little headroom on current processors to make overclocking worth it.
You are getting a big jump in compute power.

 

[Roland Of Gilead]

PSUs are built to deal with short spikes.

Yes, they are. However, how each PSU handles those spikes is different from one to the next. The 3xxx RTX cards have big power spikes. The 3090 can hit 550w alone. Some Seasonic PSU's don't handle that well. Others do. Same with Corsair.

The P6 is a decent PSU. Not the best, but very decent. It does have some drawbacks: http://www.tomshardware.com/reviews/evga-supernova-1000-p6-power-supply

But, if it were me, I wouldn't be getting a new one just yet. It could handle your system perfectly fine, or it may not. If not, get another quality PSU.

 

[LordVile]

Yes, they are. However, how each PSU handles those spikes is different from one to the next. The 3xxx RTX cards have big power spikes. The 3090 can hit 550w alone. Some Seasonic PSU's don't handle that well. Others do. Same with Corsair.

The P6 is a decent PSU. Not the best, but very decent. It does have some drawbacks: http://www.tomshardware.com/reviews/evga-supernova-1000-p6-power-supply

But, if it were me, I wouldn't be getting a new one just yet. It could handle your system perfectly fine, or it may not. If not, get another quality PSU.

Last I checked the PSU was 1000W which is more than 550W also 550W would cause issue with the motherboard more than the PSU considering the 3x8 pins can provide 450W and the 75W from the PCIE slot brings it up to 525. An extra 25W spike is nothing to a PSU, to a PCIE slot however…

 

[ccoo84]

Thank you guys, I will try out my PSU & cross my fingers.