Counter-Strike 2

Counter-Strike 2 is a competitive FPS that heavily rewards high frame rates, and the measured data for the Intel Core i5-9400 paired with the AMD Radeon RX 7900 XT shows a system capable of delivering them in spades. This combination ranks 429th out of 1632 tested combos in the game, placing it in the upper quartile of all systems. The benchmark results reveal a setup where the GPU is clearly the dominant force, but the older six-core processor still holds its own, especially at higher resolutions. The data shows an interesting dynamic: at 1080p, the CPU becomes a limiting factor, but as resolution increases, the load shifts decisively to the GPU, which handles it with ease. This analysis breaks down the measured FPS across resolutions and settings to provide a clear picture of what to expect from this pairing.

Settings Recommendations

The measured FPS data across all four presets (Low, Medium, High, Ultra) at each resolution shows that this system has a clear sweet spot. At 1920x1080, the gap between Low (412.4 FPS) and High (347.5 FPS) is a mere 64.9 FPS, while the jump from High to Ultra costs 76.4 FPS, dropping to 271.1 FPS. For competitive play, the overhead of the High preset over Ultra is substantial, and the data suggests that High is the optimal balance for 1080p, as it maintains a 347.5 FPS average while providing better visual fidelity than the Low preset.

At 2560x1440, the story shifts. The High preset delivers 233.7 FPS, which is still far above the refresh rate of most high-end monitors. The Medium preset offers 312.1 FPS, but the visual difference between Medium and High is often more noticeable in a game like CS2 where clarity matters. The data indicates that High at 1440p is the best experience, as it still provides a commanding frame rate while maximizing image quality. Ultra drops to 180.3 FPS, which is still playable but offers diminishing returns over High for the performance hit.

At 4K (3840x2160), the High preset delivers 132.1 FPS, which is excellent for the resolution. The Ultra preset, however, falls to 104.1 FPS, which is still smooth but begins to approach the threshold where frame time consistency becomes more critical. The data suggests that High at 4K is the recommended preset, as it provides a significant 28 FPS advantage over Ultra (132.1 vs 104.1) while the visual uplift from High to Ultra is less impactful than the performance loss. Overall, the High preset is the consistent recommendation across all resolutions, offering the best trade-off between frame rate and visual quality based on the measured rows.

GPU Role

The AMD Radeon RX 7900 XT is the star of this pairing, and its performance characteristics are clearly reflected in the benchmark results. With 20 GB of GDDR6 memory on a 320-bit bus delivering 800.0 GB/s of bandwidth, the card has ample resources for any resolution in this test. The GPU's boost clock of 2394 MHz and game clock of 2025 MHz help drive the high frame rates seen in the data. The card's 5376 shading units and 192 ROPs are well-suited for a game like CS2, which is not particularly demanding on pixel fill rate but benefits from raw shader throughput.

The GPU's percentile ranking of 82nd among all GPUs, with an average benchmark score of 38358, places it in the high-end tier. Its nearest rival, the NVIDIA GeForce RTX 5080 Mobile, scores 38349, a delta of 0%, indicating they are essentially tied in synthetic benchmarks. However, in real-world CS2 gameplay, the RX 7900 XT shows its strength, especially at 4K where the GPU is the primary bottleneck. The 4K High result of 132.1 FPS demonstrates that the card is not just a synthetic benchmark monster but delivers practical, high-refresh-rate performance at the most demanding resolution tested. The data shows that the GPU's 20 GB memory pool is never a limiting factor, as even at 4K Ultra, the card maintains over 100 FPS.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals a classic CPU-bound to GPU-bound transition. At 1920x1080 with High settings, the system produces 347.5 FPS. Moving to 2560x1440 High, the frame rate drops to 233.7 FPS, a reduction of 113.8 FPS or roughly 33%. This is a larger drop than the pixel count increase (from 2.07 million to 3.69 million pixels, a 78% increase) would suggest, indicating that the CPU is starting to become a limiting factor at 1080p.

The jump from 1440p to 4K (3840x2160) High tells a different story. The frame rate goes from 233.7 FPS to 132.1 FPS, a drop of 101.6 FPS or about 43%. The pixel count increases from 3.69 million to 8.29 million, a 125% increase. The fact that the FPS drop is proportionally smaller than the pixel increase suggests that the GPU is now the primary bottleneck, and it is scaling more efficiently as resolution increases. This is confirmed by the Low settings data: at 1080p Low, the system hits 412.4 FPS, but at 4K Low it drops to 212.1 FPS, a 49% reduction. The data indicates that at 1080p, the i5-9400's six threads are limiting the GPU's potential, while at 4K, the RX 7900 XT's raw power is the deciding factor. The scaling pattern is consistent with a system where the CPU is the weak link at lower resolutions, but the GPU takes over as the resolution climbs.

FAQ

Q: At which resolution does the Intel Core i5-9400 start to bottleneck the AMD Radeon RX 7900 XT?

A: The data shows the CPU becomes the limiting factor at 1920x1080. At High settings, the frame rate is 347.5 FPS at 1080p, but the drop to 233.7 FPS at 1440p is larger than the pixel increase alone would explain, indicating the CPU is holding back the GPU at the lower resolution.

Q: Is the Ultra preset worth the performance cost in Counter-Strike 2 with this hardware?

A: No, according to the data. At 1080p, Ultra delivers 271.1 FPS versus 347.5 FPS on High, a loss of 76.4 FPS. At 1440p, Ultra offers 180.3 FPS versus 233.7 FPS on High. The visual improvement from High to Ultra does not justify the significant frame rate reduction in a competitive title.

Q: How does the RX 7900 XT's 20 GB of VRAM affect performance at 4K?

A: The 20 GB memory pool is never a limiting factor in the measured results. Even at 3840x2160 with Ultra settings, the system maintains 104.1 FPS, and at High settings, it achieves 132.1 FPS. The ample VRAM ensures the card is not memory-constrained at any tested resolution.

Q: What is the best preset for competitive play at 1440p?

A: The High preset is the best choice based on the data. It provides 233.7 FPS, which is well above the refresh rate of most high-refresh monitors, while the Medium preset at 312.1 FPS offers only a marginal competitive advantage for a noticeable visual downgrade.

Q: How does this CPU-GPU combo rank among all tested systems in CS2?

A: This combination ranks 429th out of 1632 total tested combos, placing it in the top 27% of all systems. This ranking reflects the strong GPU performance tempered by the older six-core processor's limitations at lower resolutions.

Q: Does the RX 7900 XT's performance in synthetic benchmarks match its in-game results?

A: The GPU's average benchmark score is 38358, ranking it at the 82nd percentile. Its closest rival, the RTX 5080 Mobile, scores 38349 (0% delta). In CS2, the card's real-world performance is consistent with this high ranking, as seen in the 4K High result of 132.1 FPS.

CPU Role

The Intel Core i5-9400 is a six-core, six-thread processor from the Coffee Lake architecture, running at a base clock of 2.90 GHz and a boost clock of 4.10 GHz. It has 9 MB of shared L3 cache and supports dual-channel DDR4 memory. In synthetic benchmarks, it scores 7969 in Cinebench R23 multi-core and 1125 in single-core, placing it at the 50th percentile among all CPUs. Its average benchmark score of 2305 puts it in close competition with the Intel Core i3-10305, which scores 2300 (0.2% delta), and the Intel Xeon E-2134 at 2295 (0.4% delta).

In CS2, the CPU's role is clearly defined by the resolution scaling data. At 1080p Low, the system produces 412.4 FPS, but at 1080p High, it drops to 347.5 FPS. This 64.9 FPS difference is a result of increased CPU workload from higher settings, which affects draw calls and physics. The processor's six threads are sufficient to keep the GPU fed at this resolution, but the data shows it is the limiting factor, as the GPU is capable of much higher frame rates (as seen in the 4K results where the GPU is the bottleneck). At 1440p and 4K, the CPU load decreases relative to the GPU, and the i5-9400's performance is adequate to maintain high frame rates without becoming the primary constraint. The boost clock of 4.10 GHz is crucial for maintaining high minimum frame rates, though the measured data does not include min FPS figures to confirm this directly. The 65W TDP and 14nm process node indicate this is a power-efficient part that won't generate excessive heat in a gaming system.

Measured FPS Breakdown

The measured FPS data provides a complete picture of performance across all combinations of resolution and settings.

1920x1080 (1080p):

• Low: 412.4 FPS
• Medium: 391.3 FPS
• High: 347.5 FPS
• Ultra: 271.1 FPS

At 1080p, the system is clearly CPU-bound. The difference between Low and Medium is only 21.1 FPS, but the gap from Medium to High is 43.8 FPS, and from High to Ultra is 76.4 FPS. This shows that the CPU is able to handle the lower settings with ease, but the increased draw calls at higher presets begin to tax the six-core processor.

2560x1440 (1440p):

• Low: 362.8 FPS
• Medium: 312.1 FPS
• High: 233.7 FPS
• Ultra: 180.3 FPS

The 1440p results show a more balanced workload. The drop from Low to Medium is 50.7 FPS, and the drop from Medium to High is 78.4 FPS. The Ultra preset at 180.3 FPS represents a significant 53.4 FPS loss over High, indicating that the GPU is starting to feel the pressure of the higher resolution combined with the most demanding settings.

3840x2160 (4K):

• Low: 212.1 FPS
• Medium: 173.1 FPS
• High: 132.1 FPS
• Ultra: 104.1 FPS

At 4K, the GPU is the definitive bottleneck. The scaling from Low to Medium (39 FPS drop) and Medium to High (41 FPS drop) is consistent, showing that the GPU's raw throughput is the primary constraint. The Ultra preset still delivers over 100 FPS, which is impressive for 4K in a competitive FPS. The data confirms that this pairing is well-suited for high-refresh-rate 4K gaming, provided the user is willing to sacrifice some visual settings for frame rate, with High being the recommended balance.