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 278 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 204 FPS. At 4K, all settings exceed 153 FPS.
The GeForce RTX 4090 is 1051% above the recommended GPU (GeForce GTX 750) for Garry's Mod. The EPYC 7351P is 88% above the recommended CPU (Core i5).
The EPYC 7351P determines the performance ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GPU has headroom.
At 4k high, the EPYC 7351P sets the ceiling at about 168 FPS, while the GeForce RTX 4090 could reach 294 FPS. In this scenario, the CPU limits the GPU potential by 43% (FPS gap: 126 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your EPYC 7351P 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 16% | CPU Limits GPU 21% | CPU Limits GPU 24% | CPU Limits GPU 27% |
| 1440p (2K QHD) | CPU Limits GPU 33% | CPU Limits GPU 39% | CPU Limits GPU 41% | CPU Limits GPU 42% |
| 4K (Ultra HD) | CPU Limits GPU 38% | CPU Limits GPU 40% | CPU Limits GPU 43% | CPU Limits GPU 39% |
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.
The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU27% - 32% <> GPU3% - 15% <> | CPU27% - 32% <> GPU3% - 15% <> | CPU27% - 32% <> GPU3% - 15% <> | CPU24% - 32% <> GPU3% - 15% <> |
| 1440p (2K QHD) | CPU21% - 26% <> GPU3% - 15% <> | CPU21% - 26% <> GPU3% - 15% <> | CPU21% - 26% <> GPU3% - 15% <> | CPU19% - 25% <> GPU3% - 15% <> |
| 4K (Ultra HD) | CPU21% - 26% <> GPU3% - 15% <> | CPU21% - 26% <> GPU3% - 15% <> | CPU21% - 26% <> GPU3% - 15% <> | CPU19% - 25% <> GPU3% - 15% <> |
The EPYC 7351P + GeForce RTX 4090 pairing runs this title with CPU utilization between 19% and 32% and GPU utilization between 3% and 15%. EPYC 7351P keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 9% at 1080p to 9% at 4K, while CPU averages move from 30% to 24%.
Neither component is close to saturation: CPU tops out at 32% and GPU at 15%. This pattern suggests possible engine-side limits, an FPS cap, or workload constraints unrelated to raw hardware throughput.
At 1080p, averages sit around CPU 30% and GPU 9%. At 1440p, that shifts to CPU 24% and GPU 9%, and at 4K it reaches CPU 24% and GPU 9%. 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 30% (27-32%) and GPU 9% (3-15%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while EPYC 7351P remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the EPYC 7351P and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization & Bottlenecks: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. This is the key to identifying performance bottlenecks in any system.
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 88% above and your GPU is 1051% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+88%vsrecommended
+1051%vsrecommended
+729%vsminimum
+11449%vsminimum
Yes, the EPYC 7351P paired with the GeForce RTX 4090 can run Garry's Mod smoothly up to 4k achieving around 153 FPS at Ultra quality. Your GPU is 1051% above the recommended specs, and your CPU is 88% above 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 EPYC 7351P 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 EPYC 7351P and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
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.
