can my psu handle a rx6700xt?

[Zach_01]

You make a good point, but my sim racing PC with a 5800x and a 6700 XT has not run into any power-related issues even though I run an EVGA 600 BA power supply. I think that as long as you don't have a crummy PSU, you'll be fine. Besides, I know someone with a 7700x and 7800 XT PC who has a Super Flower 650 W PSU; he doesn't have any issues either.

I’m sure but OP does not have the same PSU and it’s a 10y old one. Don’t compare only wattage.

Also RX7000series has much less transients compared to RX6000series.

 

[Roderika]

Your PC with 6700XT will peak power around 430-450W during gaming. Avg power will be lower.
R5 3600: 70-80W peak for gaming
RX 6700XT: 220-250W peak for gaming
Rest of system: 80~100W peak
A 650W PSU should handle it pretty easy.

But...
RX 6000 are known for harsh transients and some times PSUs can't handle them even with plenty power budget.
Its like RX6000series can bring PSU weak points to surface

It can be a gamble.
Not damaging anything necessarily but facing restarts, hangs and so during gaming.
This can be annoying and/or frustrating especially if you cant replace the PSU ASAP and need to wait a few months.

My man Zach! I wasnt going to reply because I consider this topic done, but I just wanted to say hi. You probably dont remember me, but you helped me a lot a few years ago when I was learning to undervolt and overclock. Thanks a lot, man, I recognized you from the car pic.
As I said, I'm going to wait and replace both, but just out of curiosity, do you think the 3070 is a safer option to avoid those power spikes?

 

[Zach_01]

My man Zach! I wasnt going to reply because I consider this topic done, but I just wanted to say hi. You probably dont remember me, but you helped me a lot a few years ago when I was learning to undervolt and overclock. Thanks a lot, man, I recognized you from the car pic.
As I said, I'm going to wait and replace both, but just out of curiosity, do you think the 3070 is a safer option to avoid those power spikes?

Sorry, cant remember. Too many conversations over the years and after hundreds of posts you loose track of everything.
Glad if I help!

The only negative I can think about the 3070 vs the 6700XT is the 8GB vs the 12GB that the latter has.
Yes the 3070 GPU is ~10% faster with 5% less power and certainly without the spikes that 6000 has, but its not clear that the 8GB is sufficient for modern games. There is some talk around and I agree that maybe some games even auto-downgrade textures without user consent if frame buffer is not enough. Its part of the "optimization" that developers can do to make their games playable on as many cards as possible.

Since you are going to replace the PSU with a new one (some good quality 650W I hope) it should be able to handle any card from any generation up to 280-300W even.

I've test my 5y old 750W PSU with 420W GPU and 100-110W CPU + the rest of my system and there was no issue.

 

[Marcus L]

My man Zach! I wasnt going to reply because I consider this topic done, but I just wanted to say hi. You probably dont remember me, but you helped me a lot a few years ago when I was learning to undervolt and overclock. Thanks a lot, man, I recognized you from the car pic.
As I said, I'm going to wait and replace both, but just out of curiosity, do you think the 3070 is a safer option to avoid those power spikes?

Sidegrade at best, keep both unless you are going to get a substantial upgrade, that PSU will do fine with a 6700xt, they are not that power hingry, nor the transients, that was reserved to 6800xt/6900xt the rest of the lineup not so much as those SKU's were pushing the silicon limits, do not buy a 3070 as it is no better than a 6700xt today with driver improvements over time and worse in some scenario's due to weak 8GB vRAM as @Zach_01 said as much