I recently upgraded to an RX 9070 XT, which is currently paired with an i5-12400F, 32GB of DDR4 memory, and an LGA1700 motherboard. I use a 1440p 280Hz monitor, but most of the games I play are demanding story-driven titles. I usually adjust settings to target around 100 FPS with upscaling, and sometimes enable frame generation to reach 200 FPS or more. I want to reduce CPU bottlenecks without replacing my motherboard and DDR4 memory, since moving to a newer platform with DDR5 would be expensive. Is a CPU such as the i5-13600K, i5-14600K, or i7-14700 worth buying, or would the performance improvement over the 12400F be too small for this setup?
4 Answers
Waiting is a valid choice. Since you are mostly playing GPU-limited story games at 1440p, the 12400F is unlikely to be a severe bottleneck in every game. Save the money and move to a newer platform later when CPU, motherboard, and DDR5 prices make the full upgrade more worthwhile.
A 13600K is also a strong option and is generally close to the 14600K in gaming. At 1440p in GPU-heavy games, the 12400F may already be fast enough for roughly 100 FPS, so the upgrade will matter most in CPU-heavy games, high-refresh competitive titles, and frame-time consistency rather than average FPS everywhere.
The i5-14600K is probably the most sensible drop-in upgrade. It gives you a substantial jump in CPU performance while letting you keep the LGA1700 board and DDR4, assuming your motherboard supports it with the right BIOS. Make sure your board and cooler can handle its power draw, and check whether a non-K model would be better priced for your setup.
You could consider a 14700 or 14700K if you find one at a good price, but it is probably more CPU than the 9070 XT needs for your stated use. It also requires better cooling and motherboard power delivery. For a reasonable upgrade, I would choose the 13600K or 14600K, and skip the upgrade entirely if prices are high.
The 5800X3D or 5700X3D would only make sense if you were already on AM4. Switching from your current system to AM4 would still require a new motherboard, so it does not provide the platform-saving advantage here.