Left 4 Dead 2
A timeless classic. It is bound by single-thread performance but is so lightweight that it runs on practically any functional PC today.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, performance runs at around 32 FPS. At 1440p, performance is around 32 FPS. At 4K, performance is around 32 FPS.
The GeForce RTX 4090 is 29675% above the recommended GPU (GeForce 7600) for Left 4 Dead 2. The Celeron 847 is 58% below minimum CPU requirement.
The Celeron 847 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: $1664. At 1080p Ultra, this combo delivers 32 FPS, equivalent to 0.02 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.019 fps/$ | 0.019 fps/$ | 0.019 fps/$ | 0.019 fps/$ |
| 1440p | 0.019 fps/$ | 0.019 fps/$ | 0.019 fps/$ | 0.019 fps/$ |
| 4k | 0.019 fps/$ | 0.019 fps/$ | 0.019 fps/$ | 0.019 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 CPU.
The largest gap appears at 1080p Low, where the Celeron 847 reaches about 32 FPS, while the GeForce RTX 4090 still has headroom up to roughly 974 FPS.
That means the Celeron 847 is hitting its performance ceiling first, leaving a 97% gap versus the GeForce RTX 4090's available headroom in the most unbalanced scenario. Across all tested settings, this pairing is CPU-limited in 12 out of 12 cases, with 0 GPU-limited and 0 balanced results.
Overall, this is a clearly CPU-bound combination in this game.
The Celeron 847 is consistently the limiting part in this game, so upgrading the CPU is more likely to deliver a larger FPS gain than upgrading the GPU.
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 Celeron 847 with GeForce RTX 5090, our current GPU anchor. To estimate the GPU ceiling, we pair the GeForce RTX 4090 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 hardware is below minimum requirements. CPU is the limiting factor (58% below minimum). Expect performance issues. Low settings recommended.
-42%vsrecommended
+29675%vsrecommended
-58%vsminimum
+2422%vsminimum
The Celeron 847 and GeForce RTX 4090 will struggle to run Left 4 Dead 2 at smooth framerates. At 1080p Ultra, you can expect around 32 FPS which is classified as "playable". Consider lowering settings or upgrading your hardware.
This CPU + GPU combo costs approximately $1,664 ($15 CPU + $1,649 GPU). Since the CPU is the main limiting factor, investing in a stronger processor will improve your framerates and overall value. For example, the Pentium Dual Core T3200 is a great upgrade option for around $64 (Rank #1 for value).
For Left 4 Dead 2, upgrading the CPU would usually improve performance first. In the Performance Limiter Analysis, the Celeron 847 is the side that most often caps the frame rate, while the GeForce RTX 4090 still has additional headroom in the tested presets. The main bottleneck appears on the CPU side. The largest gap shows up at 1080p Low, where the CPU reaches about 32 FPS while the GPU still has headroom up to roughly 974 FPS. Across all tested settings, the distribution is 0/12 GPU-limited, 12/12 CPU-limited, and 0/12 balanced.
Left 4 Dead 2 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.
Left 4 Dead 2 requires at minimum a Pentium 4 3.0GHz (CPU) and GeForce 6600 (GPU) with 2 GB RAM and 13 GB storage. For the recommended experience, you need a Core 2 Duo 2.4GHz and GeForce 7600 with 2 GB RAM. Your hardware falls below the minimum requirements for this game, which may result in poor performance.
These Left 4 Dead 2 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.
