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 134 FPS. At 1440p, all settings exceed 134 FPS. At 4K, all settings exceed 129 FPS.
The GeForce RTX 4090 is 1051% above the recommended GPU (GeForce GTX 750) for Garry's Mod. The Core i3-8300T is 59% below recommended, but 79% above minimum.
The Core i3-8300T sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom.
Approximated average price on current market:
Combo price: $1674. At 1080p Ultra, this combo delivers 134 FPS, equivalent to 0.08 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.080 fps/$ | 0.080 fps/$ | 0.080 fps/$ | 0.080 fps/$ |
| 1440p | 0.080 fps/$ | 0.080 fps/$ | 0.080 fps/$ | 0.080 fps/$ |
| 4k | 0.080 fps/$ | 0.080 fps/$ | 0.080 fps/$ | 0.077 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 low, the Core i3-8300T sets the ceiling at about 134 FPS, while the GeForce RTX 4090 could reach 489 FPS. In this scenario, the CPU limits the GPU potential by 73% (FPS gap: 355 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Core i3-8300T 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 73% | CPU Limits GPU 69% | CPU Limits GPU 67% | CPU Limits GPU 63% |
| 1440p (2K QHD) | CPU Limits GPU 70% | CPU Limits GPU 69% | CPU Limits GPU 67% | CPU Limits GPU 64% |
| 4K (Ultra HD) | CPU Limits GPU 63% | CPU Limits GPU 61% | CPU Limits GPU 60% | CPU Limits GPU 51% |
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) | CPU46% - 60% <> GPU3% - 17% <> | CPU46% - 60% <> GPU3% - 17% <> | CPU46% - 60% <> GPU3% - 17% <> | CPU43% - 59% <> GPU3% - 17% <> |
| 1440p (2K QHD) | CPU41% - 54% <> GPU3% - 17% <> | CPU41% - 54% <> GPU3% - 17% <> | CPU41% - 54% <> GPU3% - 17% <> | CPU38% - 53% <> GPU3% - 17% <> |
| 4K (Ultra HD) | CPU41% - 54% <> GPU3% - 17% <> | CPU41% - 54% <> GPU3% - 17% <> | CPU41% - 54% <> GPU3% - 17% <> | CPU38% - 53% <> GPU3% - 17% <> |
The Core i3-8300T + GeForce RTX 4090 pairing runs this title with CPU utilization between 38% and 60% and GPU utilization between 3% and 17%. Core i3-8300T keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 10% at 1080p to 10% at 4K, while CPU averages move from 53% to 48%.
The utilization pattern is relatively even. The GeForce RTX 4090 reaches 10% average at its highest-load preset, while the Core i3-8300T peaks at 53% 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 53% and GPU 10%. At 1440p, that shifts to CPU 48% and GPU 10%, and at 4K it reaches CPU 48% and GPU 10%. This shows that workload scaling is limited, which can indicate engine-side constraints.
1080p (Full HD) Low is the most balanced preset based on this dataset. It runs around CPU 53% (46-60%) and GPU 10% (3-17%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Core i3-8300T remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Core i3-8300T 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 CPU is 59% below recommended and your GPU is 1051% below recommended, but both meet minimum specs. Playable at Low/Medium settings, 1080p or below.
-59%vsrecommended
+1051%vsrecommended
+79%vsminimum
+11449%vsminimum
Yes, the Core i3-8300T paired with the GeForce RTX 4090 can run Garry's Mod smoothly up to 4k achieving around 129 FPS at Ultra quality. Your GPU is 1051% above the recommended specs, and your CPU is 59% below the recommended requirements.
This CPU + GPU combo costs approximately $1674 ($25 CPU (Rank #15 Value) + $1649 GPU (Rank #77 Value)). Your build is already very cost-efficient, but if you want even more FPS, the next good option is upgrading the CPU. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).
For Garry's Mod, upgrading the CPU would have the biggest impact on performance. The Core i3-8300T 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 setup meets the minimum requirements but falls short of the recommended specs. You may need to lower some settings for smooth 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.
