Counter-Strike 2

Counter-Strike 2 is a competitive FPS where frame rate consistency often matters more than raw visual fidelity. The data for the AMD Ryzen 5 2600 paired with the NVIDIA GeForce RTX 4090 shows a system that is heavily skewed by the processor's limitations, especially at lower resolutions. This pairing, ranked 191 out of 1632 tested combinations, demonstrates how a high-end GPU can be held back by an older CPU, yet still deliver playable results across the board.

Resolution Scaling

The FPS drop from 1080p to 4K is significant but reveals a clear bottleneck shift. At 1080p Low settings, the system produces 448.9 FPS, while at 4K Low, it drops to 276.8 FPS—a 38% reduction. This relatively modest drop for a 4x pixel increase indicates that the CPU is the limiting factor at 1080p, as the GPU has ample headroom to spare. At 1080p High, the system hits 374.4 FPS, while at 4K High it falls to 172.1 FPS, a 54% decline. The larger drop at higher settings shows the GPU starting to take on more work, but the absolute numbers remain so high that the CPU is still the primary constraint.

The scaling pattern is telling. From 1080p to 1440p at High settings, FPS drops from 374.4 to 309.5, a 17% decrease. From 1440p to 4K at High, it drops another 44% to 172.1. This non-linear scaling suggests the RTX 4090 is not being fully utilized at 1080p, where the Ryzen 5 2600's 6 cores and 12 threads at a 3.90 GHz boost clock create a ceiling. At 4K, the GPU's 24 GB of GDDR6X memory and 1.01 TB/s bandwidth become more relevant, but even then, the CPU prevents the system from reaching the RTX 4090's full potential. The data indicates that this combo is GPU-limited only at 4K Ultra, where FPS drops to 132.6, a 61% reduction from 1080p Ultra's 343.6 FPS.

GPU Role

The RTX 4090 is a graphics powerhouse, but in this pairing, its role is often secondary. With 16384 shading units, 512 TMUs, and 176 ROPs, the GPU has massive raw throughput. Its 82.58 TFLOPS FP32 compute and 1,290.2 GTexel/s texture rate are more than enough for any modern title. However, the measured FPS shows that at 1080p, the GPU is frequently idle, waiting on the CPU to feed it frames. The 24 GB VRAM is overkill for CS2, but it ensures no memory-related stutters even at 4K Ultra.

The clock speeds of 2235 MHz base and 2520 MHz boost are high, but they don't compensate for the CPU bottleneck. At 1440p Medium, the system achieves 366 FPS, which is only 13% lower than 1080p Medium's 419.1 FPS. This suggests the GPU is still capable of much more at 1440p, but the CPU's 16 MB shared L3 cache and dual-channel DDR4 memory bus are limiting frame pacing. The GPU's 1.01 TB/s memory bandwidth is a huge asset, but it only becomes the deciding factor at 4K Ultra, where the system still manages 132.6 FPS—a playable number for most monitors. The data shows that the RTX 4090 is performing well, but it is not the star of this configuration.

FAQ

Q: Is the RTX 4090 bottlenecked by the Ryzen 5 2600?

A: Yes, benchmark results indicate a CPU bottleneck at 1080p and 1440p. At 1080p Low, the system produces 448.9 FPS, but at 4K Low it still hits 276.8 FPS, showing the CPU is limiting before the GPU becomes the constraint.

Q: What is the best resolution for this combo?

A: 1440p High provides the best balance, with 309.5 FPS. It offers higher visual quality than 1080p while still maintaining frame rates above 300, which is far beyond what most high-refresh monitors can display.

Q: How does this CPU compare to its nearest rivals?

A: The Ryzen 5 2600 has an average benchmark score of 19616. It performs 0.6% better than the AMD Ryzen 5 7530U and 0.7% better than the Intel Core i7-10700F, while being 0.4% slower than the Intel Core i5-1345U and 0.6% slower than the Intel Core i5-11600KF.

Q: Does the GPU's 24 GB VRAM matter for CS2?

A: Not for this game's needs. The measured data shows no VRAM-related issues at any settings, and the 24 GB capacity is far beyond what CS2 requires. The GPU's 1.01 TB/s bandwidth is more relevant for high-resolution textures.

Q: Is the 4K Ultra setting playable?

A: Yes, at 132.6 FPS average, it is playable on high-refresh displays. However, it represents a significant drop from 4K High's 172.1 FPS, and the 61% reduction from 1080p Ultra's 343.6 FPS indicates the CPU is struggling to keep up.

Q: Should I lower settings to improve FPS?

A: The data suggests diminishing returns. At 1080p, going from High (374.4 FPS) to Low (448.9 FPS) only yields a 20% gain. At 4K, the jump from High to Low is 61%, but the absolute numbers are already high enough for competitive play.

Measured FPS Breakdown

The full dataset shows a consistent pattern across all settings. At 1920x1080, the system delivers 448.9 FPS on Low, 419.1 FPS on Medium, 374.4 FPS on High, and 343.6 FPS on Ultra. The difference between Low and Ultra is 105.3 FPS, a 23% spread that is relatively small, reinforcing the CPU bottleneck. At 2560x1440, the numbers are 389 FPS on Low, 366 FPS on Medium, 309.5 FPS on High, and 238.2 FPS on Ultra. The gap between Low and Ultra widens to 151 FPS, a 39% difference, as the GPU begins to matter more.

At 3840x2160, the scaling becomes more severe. Low settings produce 276.8 FPS, Medium drops to 230.8 FPS, High yields 172.1 FPS, and Ultra bottoms out at 132.6 FPS. The spread from Low to Ultra is 144.2 FPS, a 52% reduction, showing the GPU is now the primary load-bearing component. The data reveals that this system is consistently above 130 FPS even at the most demanding settings, which is remarkable for a CPU from 2018. The Ryzen 5 2600's 6 cores and 12 threads, despite being older architecture, still manage to keep frame rates high, though the 3.40 GHz base clock is clearly a limiting factor in CPU-bound scenarios.

CPU Role

The AMD Ryzen 5 2600 is the clear bottleneck in this configuration. With 6 cores and 12 threads based on the Zen+ architecture, its 3.40 GHz base clock and 3.90 GHz boost clock are modest by today's standards. The processor has a 65W TDP and supports dual-channel DDR4 memory with 46.9 GB/s bandwidth, which is a constraint for feeding the RTX 4090. In CPU-bound scenarios like 1080p Low, the system hits 448.9 FPS, but this is likely near the CPU's maximum frame generation capability.

The benchmark data for the CPU shows a Cinebench R23 multicore score of 11186 and a single-core score of 1579. These numbers place it in the 77th percentile of all CPUs, with an average benchmark score of 19616. The PassMark multithread score of 13160 and single-thread score of 2239 further illustrate its mid-range standing. In CS2, the game relies heavily on single-core performance for physics and game logic, so the 1579 single-core score in Cinebench R23 is a more relevant indicator. This explains why the system cannot fully utilize the RTX 4090's power at lower resolutions, as the CPU's 16 MB shared L3 cache is insufficient for the high instruction throughput needed.

The nearest rivals show similar performance levels, with the Intel Core i5-1345U scoring 19691 (0.4% higher) and the AMD Ryzen 5 7530U scoring 19508 (0.6% lower). This clustering indicates the Ryzen 5 2600 is well-positioned for its generation, but it cannot match the IPC improvements of newer CPUs. The 12 nm process node and 213 mm² die size are now outdated, contributing to the frame rate ceiling observed in the measured data.

Settings Recommendations

For competitive play, the data suggests using 1080p Low settings to maximize frame rate. At 448.9 FPS, this setting provides the highest margin above any monitor's refresh rate, ensuring minimal input lag. However, the difference between Low and High at 1080p is only 74.5 FPS, so players with 360Hz monitors may prefer High settings for better visual clarity without sacrificing performance.

For those with 1440p displays, Medium settings at 366 FPS offer an excellent compromise. The jump from Medium to High at 1440p costs 56.5 FPS, which may not be worth the visual upgrade for competitive players. At 4K, the data shows that High settings at 172.1 FPS are the sweet spot, as Ultra drops to 132.6 FPS—a 23% reduction that could affect responsiveness in fast-paced scenarios.

The measured rows indicate that the system is overkill for 1080p, where even Ultra settings produce 343.6 FPS. The best experience per the data is likely 1440p High, which balances the CPU's limitations against the GPU's capabilities. This setting delivers 309.5 FPS, which is still above the threshold for the fastest gaming monitors, while providing significantly better image quality than 1080p. For players prioritizing absolute smoothness, 1080p Low remains the top choice, but the performance gap between settings is small enough to make visual quality a viable consideration at lower resolutions.