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650W PSU okay for an RX 9070 XT upgrade?

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650 is plenty. 
 

  

1 hour ago, DNooby said:

650W is a tad too close imo, 750 you should be fine, 850 AOK

I have a 9800x3d and 9070 xt and have seen my system draw 560W from the wall when gaming, but that's consistent pull... you have to take into account power spikes

I personally got an 850W, but realistically 750W should be fine ( in fact I've seen 750W be recommended for 9070 XT systems as long as the CPU isn't too power hungry )
edit: and my model is only the light OC variant ( 314W ), some of the other models pull 340W

560W from wall... a 650W titanium PSU is rated to pull 720W from the wall, a 80+ white is rated to pull over 800W (aka the titanium pulls 90watts LESS then the white PSU at 100% load) The power rating on a PSU is about the power it can PROVIDE to a computer, not what it can pull. 

you have ALOT of head room. OP can overclock both and be safe

Power spikes are what the 130% OCP is for. 

If you are 100% loading your system and its only pulling 560W from the wall, you could have gone with a 500W PSU and been fine DNooby. 

Posted (edited)

Hey!

 

Currently, I'm running a Ryzen 5 5600X, 32GB DDR4 @ 3600MHz and an RX 580 8GB with a 650W EVGA SuperNOVA G+ 80+ Gold PSU and am planning on upgrading the to the RX 9070 XT. I also wish to upgrade the CPU when AM6 comes out. 

 

Planning on upgrading to the ASRock Steel Legend RX 9070 XT which recommends an 800W PSU, but putting my build into PC Part Picker I see the estimated power draw is ~493W.

image.thumb.png.a0d05188428941ba8ef3b12e1e44412f.png 

 

Because of this I don't plan on upgrading the power supply until I upgrade the CPU. Is this alright? Or should I bump it up to something like an 850W to be more on the safe side?

 

EDIT: I am planning on also upgrading my monitor to the MSI MAG 275QF 27" WQHD 180Hz.

Edited by pupueys
added monitor details
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650W is a tad too close imo, 750 you should be fine, 850 AOK

I have a 9800x3d and 9070 xt and have seen my system draw 560W from the wall when gaming, but that's consistent pull... you have to take into account power spikes

I personally got an 850W, but realistically 750W should be fine ( in fact I've seen 750W be recommended for 9070 XT systems as long as the CPU isn't too power hungry )
edit: and my model is only the light OC variant ( 314W ), some of the other models pull 340W

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cpu is 65w tdp but can peak like 74 to say 80ish wats maybe more oced. gpu is 307w but probly can peak more so 390w for 4 gpu and cpu. say 30w for the system for about 450w

I have dyslexia plz be kind to me. dont like my post dont read it or respond thx

also i edit post alot because you no why...

Thrasher_565 hub links build logs

Corsair Lian Li Bykski Barrow thermaltake nzxt aquacomputer 5v argb pin out guide + argb info

5v device to 12v mb header

Odds and Sods Argb Rgb Links

 

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650 is plenty. 
 

  

1 hour ago, DNooby said:

650W is a tad too close imo, 750 you should be fine, 850 AOK

I have a 9800x3d and 9070 xt and have seen my system draw 560W from the wall when gaming, but that's consistent pull... you have to take into account power spikes

I personally got an 850W, but realistically 750W should be fine ( in fact I've seen 750W be recommended for 9070 XT systems as long as the CPU isn't too power hungry )
edit: and my model is only the light OC variant ( 314W ), some of the other models pull 340W

560W from wall... a 650W titanium PSU is rated to pull 720W from the wall, a 80+ white is rated to pull over 800W (aka the titanium pulls 90watts LESS then the white PSU at 100% load) The power rating on a PSU is about the power it can PROVIDE to a computer, not what it can pull. 

you have ALOT of head room. OP can overclock both and be safe

Power spikes are what the 130% OCP is for. 

If you are 100% loading your system and its only pulling 560W from the wall, you could have gone with a 500W PSU and been fine DNooby. 

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1 hour ago, pupueys said:

Hey!

 

Currently, I'm running a Ryzen 5 5600X, 32GB DDR4 @ 3600MHz and an RX 580 8GB with a 650W EVGA SuperNOVA G+ 80+ Gold PSU and am planning on upgrading the to the RX 9070 XT. I also wish to upgrade the CPU when AM6 comes out. 

 

Planning on upgrading to the ASRock Steel Legend RX 9070 XT which recommends an 800W PSU, but putting my build into PC Part Picker I see the estimated power draw is ~493W.

image.thumb.png.a0d05188428941ba8ef3b12e1e44412f.png 

 

Because of this I don't plan on upgrading the power supply until I upgrade the CPU. Is this alright? Or should I bump it up to something like an 850W to be more on the safe side?

 

EDIT: I am planning on also upgrading my monitor to the MSI MAG 275QF 27" WQHD 180Hz.

Yes don't worry it's fine. EVGA forever!

CPU: Ryzen 5800X3D | Motherboard: Gigabyte B550 Elite V2 | RAM: G.Skill Aegis 2x16gb 3200 @3600mhz | PSU: EVGA SuperNova 750 G3 | Monitor: LG 27GL850-B , Samsung C27HG70 | 
GPU: Red Devil RX 7900XT | Sound: Odac + Fiio E09K | Case: Fractal Design R6 TG Blackout |Storage: MP510 960gb and 860 Evo 500gb | Cooling: CPU: Alphacool ST30 420mm rad, Alphacool CPU and GPU Core LT and Core blocks, D5 pump and res combo 

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1 minute ago, starsmine said:

EVGA has made plenty of mid PSU... well, ordered and slaped their brand onto. SuperNova G+ is good, but dont just go if its EVGA its good. 

Yes same thing for every other PSU vendor 

CPU: Ryzen 5800X3D | Motherboard: Gigabyte B550 Elite V2 | RAM: G.Skill Aegis 2x16gb 3200 @3600mhz | PSU: EVGA SuperNova 750 G3 | Monitor: LG 27GL850-B , Samsung C27HG70 | 
GPU: Red Devil RX 7900XT | Sound: Odac + Fiio E09K | Case: Fractal Design R6 TG Blackout |Storage: MP510 960gb and 860 Evo 500gb | Cooling: CPU: Alphacool ST30 420mm rad, Alphacool CPU and GPU Core LT and Core blocks, D5 pump and res combo 

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if you are worried, you can always limit the powerdraw on the GPU via AMD Adrenaline (it's just a slider you adjust). Most reporting indicate that you can make serious cutbacks with little to non loss of fps if you tweak the settings a bit. This seems to be due to the 9070 xt being pressed way into the area of diminishing returns and the sweet spot is probably not too far away from where the 9070 lands.

mITX is awesome! I regret nothing (apart from when picking parts or have to do maintainance *cough*cough*)

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29 minutes ago, starsmine said:

650 is plenty. 
 

  

560W from wall... a 650W titanium PSU is rated to pull 720W from the wall, a 80+ white is rated to pull over 800W (aka the titanium pulls 90watts LESS then the white PSU at 100% load) The power rating on a PSU is about the power it can PROVIDE to a computer, not what it can pull. 

you have ALOT of head room. OP can overclock both and be safe

Power spikes are what the 130% OCP is for. 

If you are 100% loading your system and its only pulling 560W from the wall, you could have gone with a 500W PSU and been fine DNooby. 

This was my thought process from the little research I've done, thank you!

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650W is overkill, but since the G+ is an entry level PSU, at the very least expect some cool whine when paired with a higher end graphics card. 

 

7 hours ago, starsmine said:

SuperNova G+ is good

Since when? ACRF, similar to the FSP Raider and Pure Power 10/11, so entry level stuff. 

:)

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On 6/18/2025 at 1:05 AM, starsmine said:

If you are 100% loading your system and its only pulling 560W from the wall, you could have gone with a 500W PSU and been fine DNooby.

Yeah... no lol,
1) that's only stressing the GPU
2) power spikes on the 9070 XT can hit 500W and higher ( talking about GPU only here ) at times -> causing system hangs and weird behavior or like you mention... triggering OCP ( why would I want my PC to shut down in the middle of use )
( AMD themselves recommend 750W )

There are even instances of the recommended wattage not being enough ( likely due to old / bad PSU to be fair )

pre ATX 3.0 the handling of those spikes was a lot worse, since there was no standard set. That doesn't mean all PSU's pre 3.0 won't handle it, rather it's left up to the manufacturers discretion.

 

Here you can see some reported spikes, and some interesting experiences others have had along with some bad advice as well ( like needing 1000W PSU's )

On 6/17/2025 at 11:14 PM, pupueys said:

.

yes 650W will work, but the likelihood of running into instability and possible shutdowns will be higher which is why it's imo a tad on the too close side

there's a reason they recommend multiplying your estimated power times 1.5 for selecting your targeted PSU wattage, specially done by those who are constantly testing hardware ( LTT, tehcpowerup, gamers nexus, etc )

Also looking into how the PSU you have handles spikes doesn't seem to fair too well
650W EVGA SuperNOVA G+ 80+ Gold

You can see more info on the links in this thread -> reddit thread which shows both an old PSU list and a review of your PSU
TLDR -> it handles transient load poorly( AKA spikes )

 

As I said I'd at least bump it to an ATX 3.0 750W, but if you're still on the fence you can go with what you have, if it's smooth and you have no crashes or shutdowns then all is good, else you should upgrade it

Also note, which picking a PSU it's usually not as simple as -> brand good -> psu good. There are maaany variables at play, I'd recommend checking some of the tested PSU lists out there( like this one )

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19 minutes ago, DNooby said:

Yeah... no lol,
1) that's only stressing the GPU
2) power spikes on the 9070 XT can hit 500W and higher ( talking about GPU only here ) at times -> causing system hangs and weird behavior or like you mention... triggering OCP ( why would I want my PC to shut down in the middle of use )
( AMD themselves recommend 750W )

There are even instances of the recommended wattage not being enough ( likely due to old / bad PSU to be fair )

pre ATX 3.0 the handling of those spikes was a lot worse, since there was no standard set. That doesn't mean all PSU's pre 3.0 won't handle it, rather it's left up to the manufacturers discretion.

 

Here you can see some reported spikes, and some interesting experiences others have had along with some bad advice as well ( like needing 1000W PSU's )

yes 650W will work, but the likelihood of running into instability and possible shutdowns will be higher which is why it's imo a tad on the too close side

there's a reason they recommend multiplying your estimated power times 1.5 for selecting your targeted PSU wattage, specially done by those who are constantly testing hardware ( LTT, tehcpowerup, gamers nexus, etc )

Also looking into how the PSU you have handles spikes doesn't seem to fair too well
650W EVGA SuperNOVA G+ 80+ Gold

You can see more info on the links in this thread -> reddit thread which shows both an old PSU list and a review of your PSU
TLDR -> it handles transient load poorly( AKA spikes )

 

As I said I'd at least bump it to an ATX 3.0 750W, but if you're still on the fence you can go with what you have, if it's smooth and you have no crashes or shutdowns then all is good, else you should upgrade it

Also note, which picking a PSU it's usually not as simple as -> brand good -> psu good. There are maaany variables at play, I'd recommend checking some of the tested PSU lists out there( like this one )

I love a man who links to reddit to link to LTT on the LTT forums, also that list is outdated, though yes it does contain the information for the G+


a 500W max pull excursion is going to do nothing here. That is not going to trip OCP on any PSU, nor should it be causing stutters. Also, do note that its a red devil with a custom power bios. 

yes the G+  has "poor" transient response.... on 5v and 3.3V rails... which is not the 12V rail. I has adequate transient response @ 12V, the voltage the GPUS run off of. 

the power * 1.5 recommendation is about two things, Bad PSUs that customers will inevitably purchase following that advise, and future upgradability to higher wattage parts. 

AMD recommends 750W, because of bad PSUs, such as a 750 W psu that only provides 550W on the 12V rail, but can provide 200W on the 5 and 3.3V rails. A HIGH QUALITY 550W PSU will do just fine, but a poor quality 550W would not, so thats why they are not reccomended by AMD, because they do not control what PSU the customer is getting and they know OEMs are naughty little boys trying to save nickels on each build. A moderate quality 650W PSU is more then enough. 

OP does not need to spend more money. 

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8 minutes ago, starsmine said:

I love a man who links to reddit to link to LTT on the LTT forums, also that list is outdated, though yes it does contain the information for the G+

Disingenuous jab.

The thread itself has information on why his PSU can't be of a tier higher & contains the link to the research article. I also already stated that the list was old but it shouldn't be of consequence in regards to his PSU... AND provided an up to date list...
You can have a differing opinion without having to jab ( yes even opinions like 500W PSU being ok for a 9800X3D + 9070 XT )

 

23 minutes ago, starsmine said:

the power * 1.5 recommendation is about two things, Bad PSUs that customers will inevitably purchase following that advise, and future upgradability to higher wattage parts. 

That's only part of the pie, there are other reasons like:

  • Transient (Peak) Load Spikes -> which can cause the system to shut down or drop voltage if the PSU can't respond quick enough ( already covered this one )
  • Optimal Efficiency Curve ->  PSU's run more efficient between 40%-60% use, though the exact curve itself varies from PSU to PSU. Constantly running at high or near max capacity will cause more heat, noise, and lower longevity ( we can ignore this one since the PSU is already in hand )
  • Voltage Stability and Rail Integrity -> Under high load, voltage regulation may dip, especially with marginal headroom. A higher-capacity PSU maintains stable voltage on all rails more easily under fluctuating loads ( going back to the stability / weirdness I mentioned you might run into )

 

17 minutes ago, starsmine said:

yes the G+  has "poor" transient response.... on 5v and 3.3V rails... which is not the 12V rail. I has adequate transient response @ 12V, the voltage the GPUS run off of.

Good, this is good information. I missed this.

 

35 minutes ago, starsmine said:

OP does not need to spend more money. 


I highly value system stability, which is why I'm more for bumping it up

I see you are strongly suggest he stays with 650 to no spend more if you don't need to

 

which is why I finished with this:

"As I said I'd at least bump it to an ATX 3.0 750W, but if you're still on the fence you can go with what you have, if it's smooth and you have no crashes or shutdowns then all is good, else you should upgrade it"

 

I'm sure any reasonable person would be able to see both perspectives

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I run my RX 9070 XT on a Corsair SF600, its fine

 

total system  power consumption at the wall (5800x3d) goes up to 485 watt during cyberpunk benchmark as a realistic high load gaming scenario.

no issues with transient spikes tripping anything

i recommend to just power limit to -20%. you loose 200Mhz or so clock with no noticeable performance impact but massive power savings

only problem is the terrible fan curve from corsair that is needlessly loud

 

unlocked fps and default power limit: 485 watt

unlocked fps and -20% power limit: 400 watt

120FPS limit  and -20% power limit: 330 watt

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