I'm looking for upgrade advice because I'm not very experienced with PC hardware. My current system has an RTX 4090 24GB, an Intel i7-13700KF, 64GB of DDR5-5200, a Z790 motherboard, a 2TB M.2 SSD, a 1000W power supply, and an MSI MAG CoreLiquid P360 AIO. I game mainly at 2560×1440 and use a 240Hz main monitor alongside a 1920×1080 240Hz secondary display. Most of what I play is single-player or AAA gaming, and the system currently runs everything well. I simply enjoy high frame rates and would like to get closer to consistently using the 240Hz refresh rate when games allow it, while keeping high graphics settings. I'm considering moving to a Ryzen 7 9850X3D, which would require an AM5 motherboard. I already have 64GB of RAM, but I've heard that DDR5-6000 CL30 is a better match for AM5 X3D processors. Would replacing my DDR5-5200 kit produce a noticeable improvement, or would it make more sense to keep it? If this were your system, would you upgrade the CPU and motherboard, choose different parts, upgrade the monitor, or simply leave everything alone for now? I'm not interested in replacing the RTX 4090 and would rather avoid spending a lot for a barely noticeable performance increase.
3 Answers
If you do decide to move to AM5 for gaming, a 9800X3D or 9850X3D would be a sensible choice. I wouldn’t make new RAM a requirement, though. X3D processors are less dependent on memory speed because of their large cache, so DDR5-5200 may only cost a small amount of performance, usually more noticeable in frame-time lows than average FPS. You can try tuning the existing kit first, provided the modules and motherboard support it. Also check that your current AIO includes the correct AM5 mounting hardware and performs well with the different heat behavior of these CPUs.
Your current DDR5-5200 could be limiting the 13700KF somewhat in CPU-bound situations, particularly at 1440p with low settings and very high frame rates. Before buying anything, check what memory chips are on the modules and see whether a careful overclock or tighter timings are possible. Depending on the kit and motherboard, you might be able to reach higher speeds without replacing it. For a 13700KF, something around DDR5-6800 can sometimes be worthwhile, but stability matters more than chasing a number, and the gains will vary by game.
For the games you described, I’d probably keep the system as-is. A 13700KF and RTX 4090 are already extremely powerful, and moving to an X3D chip would mainly help in CPU-limited games, competitive titles, simulators, and situations where you’re chasing very high frame rates at lower settings. In cinematic AAA games at higher resolutions, the improvement may not justify buying both a CPU and motherboard. If you want a more noticeable change, a high-refresh OLED monitor—especially a 4K model—could improve the overall experience more than a platform swap.
The usual DDR5-6000 CL30 recommendation is useful for getting the best out of AM5, but it isn’t a night-and-day upgrade by itself. I’d only replace the RAM if you’re already buying the platform and can find a good deal.