A deceptively heavy isometric survival game. Its Java-based engine relies heavily on CPU and RAM for zombie AI and simulation. 8GB of RAM is the minimum for late-game scenarios or multiplayer.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, performance runs at around 26 FPS. At 1440p, performance is around 26 FPS. At 4K, performance is around 26 FPS.
The GeForce RTX 4090 is 1051% above the recommended GPU (GeForce GTX 750) for Project Zomboid. The Celeron G1820TE is 55% below minimum CPU requirement.
The Celeron G1820TE sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom.
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1440p low, the Celeron G1820TE sets the ceiling at about 26 FPS, while the GeForce RTX 4090 could reach 322 FPS. In this scenario, the CPU limits the GPU potential by 92% (FPS gap: 296 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Celeron G1820TE 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 91% | CPU Limits GPU 89% | CPU Limits GPU 86% | CPU Limits GPU 83% |
| 1440p (2K QHD) | CPU Limits GPU 92% | CPU Limits GPU 91% | CPU Limits GPU 87% | CPU Limits GPU 83% |
| 4K (Ultra HD) | CPU Limits GPU 90% | CPU Limits GPU 87% | CPU Limits GPU 82% | CPU Limits GPU 74% |
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.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU69% - 89% <> GPU8% - 26% <> | CPU69% - 89% <> GPU8% - 26% <> | CPU51% - 92% <> GPU0% - 14% <> | CPU53% - 85% <> GPU21% - 52% <> |
| 1440p (2K QHD) | CPU69% - 90% <> GPU9% - 27% <> | CPU69% - 90% <> GPU9% - 27% <> | CPU49% - 89% <> GPU0% - 16% <> | CPU56% - 84% <> GPU22% - 53% <> |
| 4K (Ultra HD) | CPU65% - 68% <> GPU12% - 48% <> | CPU65% - 68% <> GPU12% - 48% <> | CPU32% - 68% <> GPU1% - 41% <> | CPU42% - 64% <> GPU15% - 54% <> |
The Celeron G1820TE + GeForce RTX 4090 pairing runs this title with CPU utilization between 32% and 92% and GPU utilization between 0% and 54%. Celeron G1820TE 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 29% at 4K, while CPU averages move from 75% to 59%.
The utilization pattern is relatively even. The GeForce RTX 4090 reaches 38% average at its highest-load preset, while the Celeron G1820TE peaks at 80% average. This suggests a fairly controlled load distribution, but the actual FPS-limiting side should still be read from the limiter analysis above.
At 1080p, averages sit around CPU 75% and GPU 19%. At 1440p, that shifts to CPU 75% and GPU 21%, and at 4K it reaches CPU 59% and GPU 29%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
1440p (2K QHD) Ultra is the most balanced preset based on this dataset. It runs around CPU 70% (56-84%) and GPU 38% (22-53%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Celeron G1820TE remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Celeron G1820TE and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. They describe hardware load, but they do not directly tell you which component sets the FPS ceiling.
Important: a CPU or GPU can still be the FPS limiter without reaching 100% utilization. Two processors can both show 40% usage and still deliver very different frame rates, depending on per-core speed, cache, engine threading, driver overhead, and frame preparation efficiency.
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 hardware is below minimum requirements. CPU is the limiting factor (55% below minimum). Expect performance issues. Low settings recommended.
-84%vsrecommended
+1051%vsrecommended
-55%vsminimum
+2422%vsminimum
The Celeron G1820TE and GeForce RTX 4090 will struggle to run Project Zomboid at smooth framerates. At 1080p Ultra, you can expect around 26 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 Project Zomboid, upgrading the CPU would have the biggest impact on performance. The Celeron G1820TE 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.
Project Zomboid 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.
Project Zomboid requires at minimum a Core 2 Quad Q6600 (CPU) and GeForce 6600 (GPU) with 8 GB RAM and 5 GB storage. For the recommended experience, you need a Core i5-4460 and GeForce GTX 750 with 8 GB RAM. Your hardware falls below the minimum requirements for this game, which may result in poor performance.
These Project Zomboid 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.
