Garry's Mod
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 117 FPS. At 1440p, all settings exceed 87 FPS. At 4K, frame rates range from 44 to 89 FPS.
The Radeon HD 7990 is 68% above the recommended GPU (GeForce GTX 750) for Garry's Mod. The Ryzen 7 7800X3D is 160% above the recommended CPU (Core i5).
The Radeon HD 7990 sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the Ryzen 7 7800X3D still has additional frame-generation headroom.
Approximated average price on current market:
Combo price: $1377.13. At 1080p Ultra, this combo delivers 117 FPS, equivalent to 0.08 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.181 fps/$ | 0.140 fps/$ | 0.109 fps/$ | 0.085 fps/$ |
| 1440p | 0.117 fps/$ | 0.105 fps/$ | 0.086 fps/$ | 0.063 fps/$ |
| 4k | 0.065 fps/$ | 0.057 fps/$ | 0.046 fps/$ | 0.032 fps/$ |
* Table values represent FPS per Dollar (higher is better)
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This chart answers a simple question: which upgrade is more likely to increase FPS first? In this case, the answer is clearly the GPU.
The largest gap appears at 4K Ultra, where the Radeon HD 7990 reaches about 38 FPS, while the Ryzen 7 7800X3D still has headroom up to roughly 324 FPS.
That means the Radeon HD 7990 is hitting its performance ceiling first, leaving a 88% gap versus the Ryzen 7 7800X3D's available headroom in the most unbalanced scenario. Across all tested settings, this pairing is GPU-limited in 12 out of 12 cases, with 0 CPU-limited and 0 balanced results.
Overall, this is a clearly GPU-bound combination in this game.
The Radeon HD 7990 is consistently the limiting part in this game, so upgrading the GPU is more likely to deliver a larger FPS gain than upgrading the CPU.
This chart shows which upgrade is more likely to unlock more FPS in each tested setting. The lower line represents the part that reaches its limit first. When the CPU and GPU lines stay close together, the system is more balanced. When the gap widens, one component is more clearly holding the other back. Hover any setting to inspect it.
The lower line is the current limiter. The closer the two lines are, the more balanced the CPU and GPU are for this game.
Each line represents an estimated FPS ceiling for one component, rather than live usage alone.
To estimate the CPU ceiling, we pair the Ryzen 7 7800X3D with GeForce RTX 5090, our current GPU anchor. To estimate the GPU ceiling, we pair the Radeon HD 7990 with Ryzen 9 9950X3D, our current CPU anchor.
The lower line indicates the current limiter, since that component reaches its FPS ceiling first. In most scenarios, that is also the part most likely to deliver the bigger performance uplift if upgraded first.
The percentage shown represents the gap between the two ceilings. In practical terms, it shows how much of the stronger component's potential is left unused because the weaker one becomes the bottleneck first.
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 160% above and your GPU is 68% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+160%vsrecommended
+68%vsrecommended
+1043%vsminimum
+1587%vsminimum
Yes, the Ryzen 7 7800X3D paired with the Radeon HD 7990 can run Garry's Mod smoothly up to 1440p achieving around 87 FPS at Ultra quality. Your GPU is 68% above the recommended specs, and your CPU is 160% above the recommended requirements.
This CPU + GPU combo costs approximately $1,377.13 ($378.13 CPU + $999 GPU). Your Radeon HD 7990 is currently the main performance bottleneck and its market value ($999) is actually higher than newer, faster alternatives. Trading it or upgrading could yield immediate profit and performance gains. For example, upgrading to the GeForce GTX 980 for around $549 (Rank #79 for value) could deliver noticeably better performance while costing less than your current GPU.
For Garry's Mod, upgrading the GPU would usually give you the most noticeable improvement. In the Performance Limiter Analysis, the Radeon HD 7990 is the side that most often caps the frame rate, while the Ryzen 7 7800X3D still has additional headroom in the tested presets. The main bottleneck appears on the GPU side. The largest gap shows up at 4K Ultra, where the GPU reaches about 38 FPS while the CPU still has headroom up to roughly 324 FPS. Across all tested settings, the distribution is 12/12 GPU-limited, 0/12 CPU-limited, and 0/12 balanced.
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 Ryzen 7 7800X3D and Radeon HD 7990 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.
