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 133 FPS. At 1440p, all settings exceed 120 FPS. At 4K, all settings exceed 81 FPS.
The GeForce RTX 4090 is 870% above the recommended GPU (GeForce GTX 570) for Hearts of Iron IV. The Ryzen Threadripper 3990X is 3038% above the recommended CPU (Core i5-750).
Hearts of Iron IV supports: AFMF. This game does not have native DLSS 3 or FSR 3 Frame Generation support. AFMF is AMD-exclusive and not compatible with GeForce RTX 4090.
At lower resolutions (4k (low/medium/ultra)), the Ryzen Threadripper 3990X sets the FPS ceiling. As graphical load increases at (all 1080p settings, 1440p high), the GeForce RTX 4090 becomes the FPS-limiting side. The FPS ceiling is closely matched at 1440p (low/medium/ultra), 4k high.
Approximated average price on current market:
Combo price: $4499. At 1080p Ultra, this combo delivers 133 FPS, equivalent to 0.03 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.057 fps/$ | 0.050 fps/$ | 0.036 fps/$ | 0.030 fps/$ |
| 1440p | 0.054 fps/$ | 0.047 fps/$ | 0.035 fps/$ | 0.027 fps/$ |
| 4k | 0.040 fps/$ | 0.033 fps/$ | 0.024 fps/$ | 0.018 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1080p high, the GeForce RTX 4090 sets the ceiling at about 134 FPS, while the Ryzen Threadripper 3990X has headroom up to 162 FPS. In this scenario, the GPU limits the CPU potential by 17% (FPS gap: 28 FPS). Overall distribution: GPU limits 5/12 cells, CPU limits 3/12, balanced 4/12.
Your GeForce RTX 4090 is the limiting side in the heaviest mismatch. This means part of the Ryzen Threadripper 3990X frame-generation potential remains unused in those settings.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | GPU Limits CPU 15% | GPU Limits CPU 14% | GPU Limits CPU 17% | GPU Limits CPU 10% |
| 1440p (2K QHD) | Balanced | Balanced | GPU Limits CPU 10% | Balanced |
| 4K (Ultra HD) | CPU Limits GPU 14% | CPU Limits GPU 14% | Balanced | CPU Limits GPU 11% |
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 CPU is 3038% above and your GPU is 870% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+3038%vsrecommended
+870%vsrecommended
+2129%vsminimum
+1112%vsminimum
Yes, the Ryzen Threadripper 3990X paired with the GeForce RTX 4090 can run Hearts of Iron IV smoothly up to 4k achieving around 81 FPS at Ultra quality. Your GPU is 870% above the recommended specs, and your CPU is 3038% above the recommended requirements.
This CPU + GPU combo costs approximately $4499 ($2850 CPU (Rank #384 Value) + $1649 GPU (Rank #77 Value)). Your GeForce RTX 4090 provides phenomenal top-tier performance but at a premium enthusiast price. Since you are essentially at the ceiling of current hardware capabilities, there are no meaningful performance upgrades available. However, if you wanted a more cost-effective build that still delivers a great experience, you could theoretically step down to a high-end card with a significantly better value rating.
Your GeForce RTX 4090 is already a top-tier graphics card. While it's technically the limiting factor here (which means you are fully utilizing your GPU's visual horsepower exactly as intended), there is no meaningful upgrade path that would drastically improve your Hearts of Iron IV performance right now. GPU fully utilized at: 1080p high, 1080p low, 1080p medium, 1080p ultra, 1440p high. CPU fully utilized at: 4k low, 4k medium, 4k ultra.
Hearts of Iron IV currently only supports AFMF (AMD Fluid Motion Frames) for frame generation, which is an AMD-exclusive technology. Because you are using an NVIDIA GPU, you cannot use Frame Generation for this specific game.
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 Ryzen Threadripper 3990X 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.
