6800XT with a 650w PSU

[Paul17]

What about power spikes?   The Rx 6800 and 6900 series are probably the worst card series for power spikes.   That's probably why ppl are recommending 750W or higher and a quality brand/model (i.e. good specs/power delivery etc.).   

[GamerMoment]

35 minutes ago, IkeaGnome said:

Yeah, you're fine. 

 

Why 750W+ and why platinum only?

Just looked up a few figures - I was way off base  Those AMD cards aren't as power-hungry as their Nvidia competitors. 

[IkeaGnome]

12 minutes ago, Paul17 said:

What about power spikes?   The Rx 6800 and 6900 series are probably the worst card series for power spikes.   That's probably why ppl are recommending 750W or higher and a quality brand/model (i.e. good specs/power delivery etc.).   

That’s a tier A PSU. A very good unit. I ran for a long time on a tier A SF600 with a 5800x and 6800xt and then a 12900k with that same graphics card and power supply. I didn’t have any shut down issues related to power draw. 
 

As far as the worst series for spikes? Remember the transient spikes of Ampere when it first came out? 

[PriitM]

On 6/4/2023 at 9:47 PM, IkeaGnome said:

Good rule of thumb, but not something to live by. Quality of the specific power supply matters more than wattage does.

I ran a 12900k and a 6800 xt off a SF600 for a while. 5800x/6800xt before that. 

What power supply did NZXT put in that build? If it's one of their C Gold series, I wouldn't worry about undervolting the 6800 xt at all. If it's the H1 series, or the C bronze series, I'd keep an eye on it, but not necessarily worry right away about it.

The R9390X I had for 7 years was fed by a 550W platinum PSU. It also had to feed i7-7700K. Not sure how this helps, but a quality 650W power supply should be fine.

[Blype]

On 6/4/2023 at 1:30 PM, AnimeAddict7 said:

Hey everyone. So I have been eyeing the 6800xt on amazon but I know the recommended PSU is 750. I have a Ryzen 5 5600g and a 650w PSU. It’s a prebuilt from NZXT so if I change the PSU I lose my warranty. I was also looking at the 6800 non XT but it looks like the 6800XT has a much better performance. So my question is… is it ok the undervolt the 6800XT and use it with my 650wPSU with the intent to eventually get a higher wattage PSU? I would hate to buy the 6800 non xt for only 10$ less than the 6800XT and lose out on that performance. I’m very new to PC gaming and have only had 1 GPU a 1060 6GB and this is my first real gaming PC. I would appreciate the help. Thank you for taking the time to read this very new to PC’s users post 

I know you have already received the help you needed, but I want to chime in and say that I've been running a 6800 XT and a 10400F on a 650W PSU for many months now without issue. My PSU is the EVGA 650 GT (80+ Gold). The 10400 and 5600G should have similar levels of power consumption according to this chart from Techspot:

 

Spoiler

 

[AnimeAddict7]

12 hours ago, Blype said:

I know you have already received the help you needed, but I want to chime in and say that I've been running a 6800 XT and a 10400F on a 650W PSU for many months now without issue. My PSU is the EVGA 650 GT (80+ Gold). The 10400 and 5600G should have similar levels of power consumption according to this chart from Techspot:

 

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Thank YOUUUUUUUUU!!!!

[AnimeAddict7]

I just wanted to thank you all! I just put in my order for the 6800XT yesterday!!! I’m so excited I can hardly stand it!!! And now I get RE4 Remake for free!!!! 

[CyberDemon77]

On 6/4/2023 at 2:30 PM, AnimeAddict7 said:

Hey everyone. So I have been eyeing the 6800xt on amazon but I know the recommended PSU is 750. I have a Ryzen 5 5600g and a 650w PSU. It’s a prebuilt from NZXT so if I change the PSU I lose my warranty. I was also looking at the 6800 non XT but it looks like the 6800XT has a much better performance. So my question is… is it ok the undervolt the 6800XT and use it with my 650wPSU with the intent to eventually get a higher wattage PSU? I would hate to buy the 6800 non xt for only 10$ less than the 6800XT and lose out on that performance. I’m very new to PC gaming and have only had 1 GPU a 1060 6GB and this is my first real gaming PC. I would appreciate the help. Thank you for taking the time to read this very new to PC’s users post 

Hi everyone I know this thread is kinda old but I have a similar question I have the exact same S650w psu from nzxt and I believe the same prebuilt pc  the NZXT h510 flow prebuilt pc which was a limited edition prebuilt pc. Anyway I got a 7800xt for Christmas and I'm curious if my pc will be able to handle the GPU with a s650w PSU and a 10400f (I'm planning on upgrading to a 11900kf later) so I'm curious if my pc will be able to handle a 7800xt with a 11900kf/10400f or should I upgrade to a 750w PSU. I believe my PSU right now is a 80+ gold.

 

Thanks

 

-Cyber

[Bagzie]

On 6/4/2023 at 7:33 PM, Rayyan9400 said:

put your pc into pcpartpicker and see the estimated wattage, then multiply by 1.5

So I'm 250w short of what I need by your logic.

[nasir91]

650w psu with 5800x3d and 6800 xt working greatt