Known to slow down in the late game due to the exponential number of unit calculations. Single-core CPU speed is the most important factor for performance.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 74 FPS. At 1440p, all settings exceed 60 FPS. At 4K, frame rates range from 48 to 120 FPS.
The GeForce RTX 4090 is 870% above the recommended GPU (GeForce GTX 570) for Hearts of Iron IV. The EPYC 7351P is 877% above the recommended CPU (Core i5-750).
The EPYC 7351P determines the performance ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GPU has headroom.
At 1440p ultra, the EPYC 7351P sets the ceiling at about 60 FPS, while the GeForce RTX 4090 could reach 103 FPS. In this scenario, the CPU limits the GPU potential by 42% (FPS gap: 43 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your EPYC 7351P is the limiting side in the heaviest mismatch. This means part of the GeForce RTX 4090 rendering potential remains unused in those settings.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU Limits GPU 13% | CPU Limits GPU 15% | CPU Limits GPU 12% | CPU Limits GPU 30% |
| 1440p (2K QHD) | CPU Limits GPU 33% | CPU Limits GPU 36% | CPU Limits GPU 33% | CPU Limits GPU 42% |
| 4K (Ultra HD) | CPU Limits GPU 36% | CPU Limits GPU 38% | CPU Limits GPU 33% | CPU Limits GPU 41% |
We estimate the maximum FPS the processor can sustain and the maximum FPS the graphics card can sustain in each setting, then compare those limits directly.
Limit Factor formula: (stronger - weaker) / stronger. Example: if CPU ceiling is 200 FPS and GPU ceiling is 140 FPS, then GPU limits CPU by 30%.
CPU Limits GPU means the processor ceiling is lower. GPU Limits CPU means the graphics ceiling is lower. Balanced means the FPS ceilings are close enough that the gap is negligible.
The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU52% - 93% <> GPU11% - 27% <> | CPU52% - 93% <> GPU11% - 27% <> | CPU52% - 93% <> GPU11% - 27% <> | CPU52% - 93% <> GPU11% - 27% <> |
| 1440p (2K QHD) | CPU51% - 100% <> GPU25% - 45% <> | CPU51% - 100% <> GPU25% - 45% <> | CPU51% - 100% <> GPU25% - 45% <> | CPU51% - 100% <> GPU25% - 45% <> |
| 4K (Ultra HD) | CPU48% - 100% <> GPU33% - 56% <> | CPU48% - 100% <> GPU33% - 56% <> | CPU48% - 100% <> GPU33% - 56% <> | CPU48% - 100% <> GPU33% - 56% <> |
The EPYC 7351P + GeForce RTX 4090 pairing runs this title with CPU utilization between 48% and 100% and GPU utilization between 11% and 56%. EPYC 7351P stays in a controlled operating range, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 19% at 1080p to 44% at 4K, while CPU averages move from 72% to 74%.
The utilization pattern is relatively balanced. The GeForce RTX 4090 reaches 44% average at its highest-load preset, while the EPYC 7351P peaks at 76% average, with no single component consistently acting as a hard bottleneck.
At 1080p, averages sit around CPU 72% and GPU 19%. At 1440p, that shifts to CPU 76% and GPU 35%, and at 4K it reaches CPU 74% and GPU 44%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
4K (Ultra HD) Low is the most balanced preset based on this dataset. It runs around CPU 74% (48-100%) and GPU 44% (33-56%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while EPYC 7351P remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the EPYC 7351P and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization & Bottlenecks: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. This is the key to identifying performance bottlenecks in any system.
Data generated by our Machine Learning engine trained on real-world benchmarks. Shows the approximate average utilization at each setting.
See how your processor and graphics card compare against the game official minimum and recommended system specs. The placement of your hardware is calculated using relative synthetic performance scores to help you gauge overall playability.
Your CPU is 877% above and your GPU is 870% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+877%vsrecommended
+870%vsrecommended
+594%vsminimum
+1112%vsminimum
Yes, the EPYC 7351P paired with the GeForce RTX 4090 can run Hearts of Iron IV smoothly up to 1440p achieving around 60 FPS at Ultra quality. Your GPU is 870% above the recommended specs, and your CPU is 877% above the recommended requirements.
Price data is not currently available for this combination. In general, look for setups where the CPU and GPU are balanced — this ensures you're not overspending on one component that the other can't keep up with.
For Hearts of Iron IV, upgrading the CPU would have the biggest impact on performance. The EPYC 7351P is currently the limiting factor — the GeForce RTX 4090 has extra headroom that a faster processor could take advantage of. This is especially noticeable at 1080p where CPU performance matters more. CPU-limited at: 1080p low, 1080p medium, 1080p high, 1080p ultra, 1440p low, 1440p medium, 1440p high, 1440p ultra, 4k low, 4k medium, 4k high, 4k ultra.
Hearts of Iron IV does not currently support Frame Generation technologies like DLSS 3 or FSR 3. Your performance is based entirely on native rendering. If the game adds support in a future update, newer GPUs will benefit the most.
Hearts of Iron IV requires at minimum a Core 2 Quad Q9400 (CPU) and GeForce GTX 470 (GPU) with 4 GB RAM and 2 GB storage. For the recommended experience, you need a Core i5-750 and GeForce GTX 570 with 4 GB RAM. Your EPYC 7351P and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
These Hearts of Iron IV FPS results are not arbitrary numbers. They come from calculations informed by thousands of real gaming benchmarks, and the typical accuracy range is around 10% to 15%. That makes them far more useful than generic FPS calculators that simply invent values without a benchmark foundation. Actual in-game performance can still vary with drivers, updates, RAM configuration, cooling, and the exact scene being rendered.
Performance estimates are based on synthetic benchmarks and hardware capabilities.
Results may vary based on drivers, OS, and background processes.
