The RTX 3070 is based on Ampere architecture. It has 5888 CUDA cores running at 1500MHz. It has a huge 8GB GDDR6 VRAM that is more than enough for running most games at 1440p.
The RTX 3070 paired with the i5 9400F CPU is a perfect choice for a budget 1440p 144Hz gaming build. Most esports games run above 100+ FPS at ultra settings.
Thanks to the improved RT cores and Tensor cores, you will have much better performance in Ray tracing and DLSS as compared to the previous generation graphics cards.
Games such as Watch Dogs: Legion, COD: Black Ops Cold War, and Cyberpunk 2077 look visually stunning when those features are turned on.
The RTX 3070 has a TDP rating of 220W and uses a single 12-pin power connector. It is fairly power efficient. Its cooling system is very good. You will observe no disturbing coil whine even after prolonged use.
The RTX 3070 comes at a much lower price when compared to its previous generation counterparts. Thanks to it, 1440p gaming is much more affordable in 2021. I would highly recommend it for the i5 9400F CPU for 1440p gaming.