With local AI rendering (SD) and gaming (IMO), GPU is most important. I was running SD for a while on a 6GB 2060 but I'd recommend at least 8GB.
As for GPU, I'd even sacrifice some other areas to get up to a 4070ti if you could. My PC games just fine on a old R7 2000 series. The GPU changed everything for me when I buddy let me borrow his 4070 for a week when he got a 4090. In that week of testing gaming benchmarks went up massively and I could finally train on SD and such. I won't even go back to trying on the 2060 now that he needed his 4070 back for mining. I'm waiting until I can buy my own and I'm only upgrading the GPU, aiming for a 4070ti Super as that seems like the consensus sweet spot in money to performance.
Feel free to correct me if a more technically proficient user thinks I'm wrong. This is just my take if trying to save money. Get a cheaper CPU to get a better GPU. JMHO.
