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, performance runs at around 16 FPS. At 1440p, frame rates range from 10 to 16 FPS. At 4K, frame rates range from 9 to 16 FPS.
The GeForce RTX 4090 is 870% above the recommended GPU (GeForce GTX 570) for Hearts of Iron IV. The Mobile Athlon 64 3700+ is 83% below minimum CPU requirement.
The Mobile Athlon 64 3700+ sets the FPS ceiling at 1080p (low/medium/high), while the GeForce RTX 4090 still has headroom. The FPS ceiling is closely matched at 1080p ultra, all 1440p settings, all 4k settings.
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1080p low, the Mobile Athlon 64 3700+ sets the ceiling at about 16 FPS, while the GeForce RTX 4090 could reach 40 FPS. In this scenario, the CPU limits the GPU potential by 60% (FPS gap: 24 FPS). Overall distribution: CPU limits 3/12 cells, GPU limits 0/12, balanced 9/12.
The Mobile Athlon 64 3700+ and GeForce RTX 4090 stay close in effective frame-generation ceiling across most presets, so neither side consistently suppresses the other by a large margin.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU Limits GPU 60% | CPU Limits GPU 43% | CPU Limits GPU 38% | Balanced |
| 1440p (2K QHD) | Balanced | Balanced | Balanced | Balanced |
| 4K (Ultra HD) | Balanced | Balanced | Balanced | Balanced |
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.
A component can still be the FPS limiter without reaching 100% utilization. The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
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 hardware is below minimum requirements. CPU is the limiting factor (83% below minimum). Expect performance issues. Low settings recommended.
-76%vsrecommended
+870%vsrecommended
-83%vsminimum
+1112%vsminimum
The Mobile Athlon 64 3700+ and GeForce RTX 4090 will struggle to run Hearts of Iron IV at smooth framerates. At 1080p Ultra, you can expect around 16 FPS which is classified as "struggling". Consider lowering settings or upgrading your hardware.
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 Mobile Athlon 64 3700+ 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.
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 hardware falls below the minimum requirements for this game, which may result in poor performance.
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.
