A Source engine sandbox where performance depends entirely on the mods and contraptions you spawn. RAM errors are common on systems with only 4GB.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 68 FPS. At 1440p, all settings exceed 68 FPS. At 4K, all settings exceed 68 FPS.
The GeForce RTX 4090 is 1051% above the recommended GPU (GeForce GTX 750) for Garry's Mod. The A6-9400 is 9% below minimum CPU requirement.
The A6-9400 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 1080p low, the A6-9400 sets the ceiling at about 68 FPS, while the GeForce RTX 4090 could reach 532 FPS. In this scenario, the CPU limits the GPU potential by 87% (FPS gap: 464 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your A6-9400 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 87% | CPU Limits GPU 86% | CPU Limits GPU 85% | CPU Limits GPU 82% |
| 1440p (2K QHD) | CPU Limits GPU 85% | CPU Limits GPU 84% | CPU Limits GPU 83% | CPU Limits GPU 80% |
| 4K (Ultra HD) | CPU Limits GPU 81% | CPU Limits GPU 80% | CPU Limits GPU 79% | CPU Limits GPU 73% |
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) | CPU7% - 24% <> GPU10% - 33% <> | CPU7% - 24% <> GPU10% - 33% <> | CPU7% - 24% <> GPU10% - 33% <> | CPU5% - 24% <> GPU10% - 32% <> |
| 1440p (2K QHD) | CPU26% - 43% <> GPU3% - 18% <> | CPU26% - 43% <> GPU3% - 18% <> | CPU26% - 43% <> GPU3% - 18% <> | CPU24% - 42% <> GPU3% - 16% <> |
| 4K (Ultra HD) | CPU26% - 43% <> GPU3% - 18% <> | CPU26% - 43% <> GPU3% - 18% <> | CPU26% - 43% <> GPU3% - 18% <> | CPU24% - 42% <> GPU3% - 16% <> |
The A6-9400 + GeForce RTX 4090 pairing runs this title with CPU utilization between 5% and 43% and GPU utilization between 3% and 33%. A6-9400 keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 22% at 1080p to 10% at 4K, while CPU averages move from 16% to 34%.
Neither component is close to saturation: CPU tops out at 43% and GPU at 33%. This pattern suggests possible engine-side limits, an FPS cap, or workload constraints unrelated to raw hardware throughput. It also shows why low utilization does not automatically mean there is no FPS limiter.
At 1080p, averages sit around CPU 16% and GPU 22%. At 1440p, that shifts to CPU 34% and GPU 10%, and at 4K it reaches CPU 34% and GPU 10%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
1080p (Full HD) Low is the most balanced preset based on this dataset. It runs around CPU 16% (7-24%) and GPU 22% (10-33%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while A6-9400 remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the A6-9400 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 (9% below minimum). Expect performance issues. Low settings recommended.
-79%vsrecommended
+1051%vsrecommended
-9%vsminimum
+11449%vsminimum
Yes, the A6-9400 paired with the GeForce RTX 4090 can run Garry's Mod smoothly up to 4k achieving around 68 FPS at Ultra quality. Your GPU is 1051% above the recommended specs, and your CPU is 79% below 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 Garry's Mod, upgrading the CPU would have the biggest impact on performance. The A6-9400 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.
Garry's Mod 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.
Garry's Mod requires at minimum a Pentium 4 (CPU) and GeForce 6 series (GPU) with 4 GB RAM and 5 GB storage. For the recommended experience, you need a Core i5 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 Garry's Mod 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.
