

Should I get an RX 9060XT with a new cpu, or a 9070 and keep my Ryzen 5 3600xt cpu?
I play space marine 2 mainly. I tested a 9060xt with my current cpu and I struggled to stay above 55fps on 1080p Native Ultra settings, and sometimes dropping to 45 in fights. I was wondering if I should get myself one of these cards with a new cpu, or just get a 9070.
Basically I'm new to this and I'm not sure if it's my cpu that's causing the issue or the gpu. I also don't want to spend above £600 in total if I can avoid it, but I don't mind going over to add a new cpu if needed because I'd really like the 9070. My only reservation is if it will work with my current 700w psu. I did want a 9070xt but I don't think it'll work with only 700w on my psu.
Any advice would be appreciated.
Edit 1: Regarding the cpu, I'd prefer not to spend more than £200 on it.
Edit 2: I'm willing to wait around 3 months to see if prices drop. Then I might be able to get both a 9070 and a new cpu? Maybe even a second-hand gpu?