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, all quality settings exceed 450 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 286 FPS. At 4K, all settings exceed 188 FPS.
The GeForce RTX 4090 is 29675% above the recommended GPU (GeForce 7600) for Left 4 Dead 2. The Ryzen 7 PRO 5845 is 1089% above the recommended CPU (Core 2 Duo 2.4GHz).
Left 4 Dead 2 supports: AFMF. This game does not have native DLSS 3 or FSR 3 Frame Generation support. AFMF is AMD-exclusive and not compatible with GeForce RTX 4090.
The Ryzen 7 PRO 5845 sets the FPS ceiling at all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom. The FPS ceiling is closely matched at all 1080p settings.
Approximated average price on current market:
Combo price: $1949. At 1080p Ultra, this combo delivers 450 FPS, equivalent to 0.23 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.326 fps/$ | 0.303 fps/$ | 0.257 fps/$ | 0.231 fps/$ |
| 1440p | 0.228 fps/$ | 0.204 fps/$ | 0.169 fps/$ | 0.147 fps/$ |
| 4k | 0.143 fps/$ | 0.125 fps/$ | 0.110 fps/$ | 0.096 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 4k high, the Ryzen 7 PRO 5845 sets the ceiling at about 228 FPS, while the GeForce RTX 4090 could reach 366 FPS. In this scenario, the CPU limits the GPU potential by 38% (FPS gap: 138 FPS). Overall distribution: CPU limits 8/12 cells, GPU limits 0/12, balanced 4/12.
Your Ryzen 7 PRO 5845 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) | Balanced | Balanced | Balanced | Balanced |
| 1440p (2K QHD) | CPU Limits GPU 8% | CPU Limits GPU 14% | CPU Limits GPU 20% | CPU Limits GPU 20% |
| 4K (Ultra HD) | CPU Limits GPU 29% | CPU Limits GPU 34% | CPU Limits GPU 38% | CPU Limits GPU 36% |
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.
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 1089% above and your GPU is 29675% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+1089%vsrecommended
+29675%vsrecommended
+768%vsminimum
+2422%vsminimum
Yes, the Ryzen 7 PRO 5845 paired with the GeForce RTX 4090 can run Left 4 Dead 2 smoothly up to 4k achieving around 188 FPS at Ultra quality. Your GPU is 29675% above the recommended specs, and your CPU is 1089% above the recommended requirements.
This CPU + GPU combo costs approximately $1949 ($300 CPU (Rank #219 Value) + $1649 GPU (Rank #77 Value)). Since the CPU is the main limiting factor, investing in a stronger processor will improve your framerates and overall value. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).
For Left 4 Dead 2, upgrading the CPU would have the biggest impact on performance. The Ryzen 7 PRO 5845 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: 1440p high, 1440p low, 1440p medium, 1440p ultra, 4k high, 4k low, 4k medium, 4k ultra.
Left 4 Dead 2 currently only supports AFMF (AMD Fluid Motion Frames) for frame generation, which is an AMD-exclusive technology. Because you are using an NVIDIA GPU, you cannot use Frame Generation for this specific game.
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 Ryzen 7 PRO 5845 and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
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.
