Is the 8400F CPU enough for 3440x1440p ultrawide gaming with a 9070 GPU?

If you can stretch your budget, go for the 7500F or even the 7600X if possible! I have the 7500F and it runs 1440p games smoothly. Just remember that every game uses the CPU and GPU differently, but generally, a stronger CPU will help in the longer run.

Honestly, bottleneck calculators aren't always reliable. The CPU you choose really depends on the games you play. These days, a lot of new titles are more CPU-intensive, especially if you're using upscaling technologies. I would recommend going for the 7500F—it'll give you better performance in the long run, especially with future games.

I agree, the 7500F is a much better choice compared to the 8400F. The performance difference is worth the small price increase, especially for gaming at 1440p. Plus, the 7500 has a higher boost clock and more cache, making it more efficient overall. Just keep in mind that the 8400F is really only good for budget builds.

For your setup, I’d definitely recommend the 7500F over the 8400F. The price difference is minimal compared to the performance you gain. While the 8400F can technically work, it may limit your experience with more demanding games in the future.

I'd steer clear of the 8400F. The 7500F or even the 7600X are solid options for 3440x1440p. Just remember, the 'F' in 7500F means it lacks integrated graphics, which is fine if you're planning to use a dedicated GPU. It's worth spending a bit more for better performance!