I'm deciding between the Ryzen 7 9700X and Ryzen 7 7800X3D, with only about €60 separating them. My system has an RTX 4080 Super, and I play at 4K using DLSS Performance. The games I'm interested in include heavily modded Skyrim setups such as Nolvus and LoreRim, modded Fallout 4, Starfield, Cyberpunk 2077, Resident Evil Requiem, Death Stranding 2, Forza Horizon 6, and Baldur's Gate 3. In some 4K benchmarks, the two CPUs perform surprisingly similarly, while the 7800X3D leads in certain CPU-heavy games. Since DLSS Performance renders at a lower internal resolution before upscaling, I'm wondering how much the 7800X3D's extra cache still helps compared with native 4K. Is the newer Zen 5 architecture in the 9700X a better choice for longevity, and what happens when a CPU falls below a game's recommended requirement? For heavily modded games, should I prioritize average FPS or 1% lows and consistent frame times?
3 Answers
For only €60 more, I’d choose the 7800X3D if gaming is the main priority. Its large 3D V-Cache can help CPU-heavy games, reduce stutter, and improve 1% lows. It is still a strong modern eight-core processor, so it should be plenty capable for general use as well. With a high-end GPU, the extra CPU headroom is worthwhile if you plan to keep the system for several years.
DLSS Performance lowers the GPU’s rendering workload, but it doesn’t remove the CPU workload. The processor still handles game logic, simulation, draw-call preparation, NPCs, physics, and mod scripts. That means the 7800X3D can retain an advantage in CPU-limited situations even at 4K with upscaling. The difference may be small in GPU-heavy games such as Cyberpunk, but it can be more noticeable in large modded environments and other CPU-heavy titles.
Both CPUs should be usable for a long time, and the 9700X’s newer architecture does not automatically make it better for gaming. The 9700X may be the more balanced option for productivity or mixed workloads, but they have the same core count and the 7800X3D is generally the safer gaming pick at this price difference. Being below a game’s recommended CPU requirement usually means lower minimum FPS, more inconsistent frame times, or limits in busy areas rather than the game simply failing to run.
For modded Skyrim and Fallout 4, I’d pay more attention to 1% lows and frame-time consistency than the headline average FPS. Script-heavy areas, dense settlements, and large NPC crowds can expose CPU limits even when the average benchmark looks fine.