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 329 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 353 FPS. At 4K, all settings exceed 280 FPS.
The GeForce RTX 4090 is 1051% above the recommended GPU (GeForce GTX 750) for Garry's Mod. The EPYC 4565P is 385% above the recommended CPU (Core i5).
The EPYC 4565P sets the FPS ceiling at all 1080p settings, 1440p high, while the GeForce RTX 4090 still has headroom. The FPS ceiling is closely matched at 1440p (low/medium/ultra), all 4k settings.
Approximated average price on current market:
Combo price: $3629. At 1080p Ultra, this combo delivers 329 FPS, equivalent to 0.09 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.120 fps/$ | 0.105 fps/$ | 0.099 fps/$ | 0.091 fps/$ |
| 1440p | 0.115 fps/$ | 0.107 fps/$ | 0.101 fps/$ | 0.097 fps/$ |
| 4k | 0.098 fps/$ | 0.092 fps/$ | 0.089 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 medium, the EPYC 4565P sets the ceiling at about 395 FPS, while the GeForce RTX 4090 could reach 436 FPS. In this scenario, the CPU limits the GPU potential by 9% (FPS gap: 41 FPS). Overall distribution: CPU limits 6/12 cells, GPU limits 0/12, balanced 6/12.
The EPYC 4565P and GeForce RTX 4090 stay close in effective frame-generation ceiling across most presets, so neither side consistently suppresses the other by a large margin.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU Limits GPU 8% | CPU Limits GPU 9% | CPU Limits GPU 9% | CPU Limits GPU 9% |
| 1440p (2K QHD) | Balanced | CPU Limits GPU 6% | CPU Limits GPU 6% | Balanced |
| 4K (Ultra HD) | Balanced | Balanced | Balanced | Balanced |
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) | CPU0% - 0% GPU23% - 45% <> | CPU0% - 0% GPU23% - 45% <> | CPU0% - 0% GPU23% - 45% <> | CPU0% - 0% GPU23% - 44% <> |
| 1440p (2K QHD) | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 29% <> |
| 4K (Ultra HD) | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 30% <> | CPU0% - 6% <> GPU16% - 29% <> |
The EPYC 4565P + GeForce RTX 4090 pairing runs this title with CPU utilization between 0% and 6% and GPU utilization between 16% and 45%. EPYC 4565P keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 34% at 1080p to 23% at 4K, while CPU averages move from 0% to 3%.
Neither component is close to saturation: CPU tops out at 6% and GPU at 45%. 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 0% and GPU 34%. At 1440p, that shifts to CPU 3% and GPU 23%, and at 4K it reaches CPU 3% and GPU 23%. 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 0% (0-0%) and GPU 34% (23-45%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while EPYC 4565P remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the EPYC 4565P 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 385% above and your GPU is 1051% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+385%vsrecommended
+1051%vsrecommended
+2036%vsminimum
+11449%vsminimum
Yes, the EPYC 4565P paired with the GeForce RTX 4090 can run Garry's Mod smoothly up to 4k achieving around 280 FPS at Ultra quality. Your GPU is 1051% above the recommended specs, and your CPU is 385% above the recommended requirements.
This CPU + GPU combo costs approximately $3629 ($1980 CPU (Rank #349 Value) + $1649 GPU (Rank #77 Value)). Your EPYC 4565P 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 processor with a significantly better value rating. For example, the EPYC 9355P is a great upgrade option for around $2998 (Rank #287 for value).
Your EPYC 4565P is already an incredibly powerful processor. While it's technically the first component to hit its limit (which is completely normal in state-of-the-art builds), there is no meaningful upgrade path that would drastically improve your Garry's Mod performance right now. CPU fully utilized at: 1080p low, 1080p medium, 1080p high, 1080p ultra, 1440p high.
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 4565P 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.
