Counter-Strike: Global Offensive

The Intel Core i5-12400F paired with the NVIDIA GeForce RTX 4090 in Counter-Strike: Global Offensive represents a study in extreme bottleneck dynamics. The CPU, a 6-core/12-thread Alder Lake part with a 2.50 GHz base clock and 4.40 GHz boost clock, is a solid mid-range processor. The RTX 4090, however, is an absolute flagship GPU with a 2235 MHz base clock and 2520 MHz boost clock. The data shows that this combination produces extraordinarily high frame rates, but the performance scaling patterns across resolutions reveal that the CPU is the dominant limiting factor in this esports title, not the GPU. This analysis will break down the measured FPS data to clarify the role each component plays in this specific game.

CPU Role — cores, clocks, and how they relate to this game's results

Counter-Strike: Global Offensive is a CPU-intensive esports title, and the i5-12400F’s specifications are central to understanding the results. The processor features 6 physical cores and 12 threads, a configuration that allows for efficient handling of the game’s main game logic and physics threads. The base clock of 2.50 GHz and boost clock of 4.40 GHz are the key frequency figures here; the boost clock is particularly relevant for the game’s primary thread, which often operates on a single core. The processor’s 18 MB of shared L3 cache is also a factor, as it helps reduce memory latency for frequently accessed game data.

The benchmark data for this CPU places it in a specific performance tier. In the 3dmark_max_threads test, the i5-12400F scores 5912, while in the 3dmark_single_thread test, it scores 909. Its Cinebench R23 scores are 12380 for multi-core and 1680 for single-core. These scores, combined with a PassMark single-thread score of 3481, indicate a processor with strong single-thread capabilities, which is the most critical attribute for CS:GO’s frame rate ceiling. The CPU’s percentileVsAllCpus is 73, meaning it performs better than 73% of all CPUs in the database. Its nearest rivals, such as the AMD Ryzen 5 7535HS with an avgScore of 19047 and the Intel Core 3 201E with 19056, show that the i5-12400F is competitively positioned in the overall CPU landscape, with deltaPct values of 0 and -0.1 respectively.

In CS:GO, the practical impact of these specs is seen in the FPS numbers. The game’s engine relies heavily on a single main thread for rendering commands. The i5-12400F’s 4.40 GHz boost clock is what allows it to push frame rates to over 1000 FPS at 1080p Low settings, as seen in the measured FPS data. The 12 threads help ensure that background tasks and other game systems do not interfere with this main thread as much as they might on a lower-thread-count CPU. The data suggests that the CPU’s single-core performance, rather than its core count, is the primary driver of the high average FPS figures in this title. The CPU’s 73rd percentile ranking and its benchmark scores all point to a processor that is more than capable of feeding a high-end GPU in this specific game, but the data will show that it still becomes the bottleneck at lower resolutions.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce RTX 4090 is a graphics card of immense capability, and its specifications are almost overkill for a game like CS:GO. The GPU is built on the Ada Lovelace architecture and features 24 GB of GDDR6X memory on a 384-bit bus, providing 1.01 TB/s of bandwidth. Its base clock is 2235 MHz with a boost clock of 2520 MHz. These are the figures that matter for raw rendering speed. The 16384 shading units and 176 ROPs are also part of the spec sheet that defines this card’s raw power.

The GPU’s benchmark scores are astronomical. In the 3dmark_steel_nomad_dx12 test, it scores 9223, and in Geekbench Vulkan, it scores 271631. Its PassMark G3D score is 38194, and its avgBenchmarkScore is 60347. This places the RTX 4090 in the 88th percentile of all GPUs. Its nearest rivals, such as the Intel Arc Pro A60 with an avgScore of 60326 (deltaPct 0) and the AMD Radeon Pro Vega 48 with 60140 (deltaPct 0.3), are nowhere near its actual gaming performance class, highlighting that the benchmark database comparison is based on synthetic averages, not gaming-specific data. The GPU’s massive VRAM capacity of 24 GB is irrelevant for CS:GO, which is a lightweight game in terms of texture memory.

In the measured FPS data, the GPU’s role is more about not being a limiting factor. At 4K Ultra settings, the combo still produces 322 FPS, which reflects the GPU’s raw power. However, the GPU’s clock speeds and memory bandwidth are not being stressed in this title. The data shows that as resolution drops, the FPS increases dramatically, not because the GPU is working harder, but because the CPU can feed it frames faster. The RTX 4090’s boost clock of 2520 MHz is more than sufficient to render CS:GO’s simple scenes at any resolution, and the GPU is effectively idling in terms of its utilization ceiling. The GPU is the dominant component in terms of hardware cost and power, but the data indicates that its performance headroom is vast and untapped in this specific game.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data provides a clear picture of how this combo scales across resolutions, and it directly reveals the limiting component. At 1920x1080 with Low settings, the combo achieves 1257 FPS. Moving to 2560x1440 Low settings, the FPS drops to 868, a decline of 389 FPS. At 3840x2160 Low settings, the FPS falls further to 513. This scaling pattern is critical. The drop from 1080p to 1440p is a 31% reduction in FPS, while the drop from 1440p to 4K is a 41% reduction. These are massive percentage drops that indicate the CPU is the primary bottleneck at the lower resolutions.

If the GPU were the limiting factor, the FPS would remain relatively flat across resolutions, because the GPU’s rendering load would increase with pixel count, but the CPU’s frame generation limit would stay constant. Here, the FPS is highly sensitive to resolution, which means the CPU is capable of generating frames faster than the GPU can render them at 1080p, but as resolution increases, the GPU’s rendering time increases, and it eventually becomes the limiting factor. The crossover point is evident in the High settings data. At 1080p High, the FPS is 929; at 1440p High, it is 640; and at 4K High, it is 378. The gap between 1080p and 1440p is 289 FPS, while the gap between 1440p and 4K is 262 FPS. This shows that the CPU bottleneck is most severe at 1080p, where the GPU is waiting for the CPU to send draw calls.

The data for Medium settings, which includes min and max FPS, reinforces this. At 1080p Medium, the average FPS is 1074, with a min of 912 and max of 1235. At 4K Medium, the average is 436, with a min of 371 and max of 502. The variance between min and max FPS is wider at 1080p (323 FPS difference) than at 4K (131 FPS difference). This is a classic sign of CPU bottlenecking; the CPU’s frame time variance is amplified when the GPU is not the limiting factor. The conclusion from the resolution scaling is that the i5-12400F is the limiting component at 1080p and 1440p, while the RTX 4090 becomes the limiting component at 4K, particularly at Ultra settings where the FPS drops to 322.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the Intel Core i5-12400F and NVIDIA GeForce RTX 4090 ranks 148th out of 3719 tested combos in Counter-Strike: Global Offensive. This is a top 4% ranking, which is impressive on its face. However, the data suggests that this ranking is largely due to the GPU’s sheer power, not an optimal pairing. The RTX 4090 is the most powerful consumer GPU available, and even with a mid-range CPU, it can achieve high frame rates. However, the CPU is holding the combo back from a higher ranking.

To put this rank in perspective, consider that there are 147 combos that outperform this one. These would almost certainly feature higher-end CPUs, such as the Intel Core i9 or AMD Ryzen 9 series, which have higher single-thread performance and more cache. The RTX 4090’s 88th percentile ranking among GPUs is far higher than the i5-12400F’s 73rd percentile ranking among CPUs. This discrepancy in component tiers is the reason the combo ranks 148th rather than in the top 10. The deltaPct values for the CPU’s nearest rivals are all within 0.3%, meaning the i5-12400F is not far behind its direct competitors, but those competitors are all mid-range parts, not the top-tier CPUs that would pair better with the RTX 4090.

The ranking data indicates that for CS:GO, the CPU matters more than the GPU for achieving the absolute highest frame rates. A combo with a top-tier CPU and a lower-tier GPU (like an RTX 4080) might score better in this specific game because the CPU would be able to push higher FPS at lower resolutions. The 148th rank out of 3719 combos is a strong result, but it is not a reflection of an ideal pairing. It is a reflection of the GPU’s massive power compensating for a CPU that is not the best possible match for this game’s engine. The data shows that the bottleneck is real, and the combo rank would improve significantly with a faster CPU.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data provides a comprehensive look at performance across all settings and resolutions. All numbers below are taken directly from the measured FPS table. At 1920x1080, the performance is as follows: Low settings yield an average of 1257 FPS, Medium settings yield 1074 FPS (with a minimum of 912 and maximum of 1235), High settings yield 929 FPS, and Ultra settings yield 793 FPS. The progression from Low to Ultra at 1080p shows a 464 FPS drop, which is a 37% reduction in performance when moving from the lowest to the highest settings.

At 2560x1440, the FPS figures are significantly lower. Low settings produce 868 FPS, Medium settings produce 739 FPS (with a minimum of 628 and maximum of 850), High settings produce 640 FPS, and Ultra settings produce 546 FPS. The drop from Low to Ultra at 1440p is 322 FPS, a 37% reduction, which is proportionally similar to 1080p. This suggests that the settings scaling has a consistent relative impact across these two resolutions.

At 3840x2160, the performance drops considerably. Low settings yield 513 FPS, Medium settings yield 436 FPS (with a minimum of 371 and maximum of 502), High settings yield 378 FPS, and Ultra settings yield 322 FPS. The drop from Low to Ultra at 4K is 191 FPS, a 37% reduction. This consistency in percentage drop across all resolutions is interesting. It shows that the settings presets have a uniform impact on the GPU workload, independent of resolution. However, the absolute FPS values are far apart, confirming that resolution is the primary variable affecting performance.

The Medium settings data is the only set that includes minimum and maximum FPS values. At 1080p Medium, the range between min and max is 323 FPS. At 1440p Medium, the range is 222 FPS. At 4K Medium, the range is 131 FPS. This narrowing range as resolution increases is a direct indicator of the CPU bottleneck. At lower resolutions, the CPU’s frame time variance is exposed, causing larger swings in FPS. At higher resolutions, the GPU’s frame time becomes the dominant factor, smoothing out the variance. The data clearly shows that for the smoothest experience, 4K settings provide a more consistent frame rate, while 1080p provides the highest peak FPS but with more variance.

FAQ

Q: What is the highest average FPS achieved by this combo in CS:GO?

A: The highest average FPS is 1257, achieved at 1920x1080 resolution with Low settings.

Q: At which settings does the combo provide the most consistent frame rate?

A: The most consistent frame rate is at 3840x2160 with Medium settings, where the minimum FPS is 371 and the maximum is 502, a variance of 131 FPS. This is the smallest variance among the Medium settings data points.

Q: How much does the average FPS drop when moving from 1080p to 4K at Ultra settings?

A: At 1080p Ultra, the average FPS is 793. At 4K Ultra, the average FPS is 322. This is a drop of 471 FPS, or a 59% reduction in performance.

Q: Does the RTX 4090’s 24 GB of VRAM impact performance in this game?

A: The data does not indicate that VRAM capacity is a factor. The game’s FPS is primarily limited by the CPU at lower resolutions and by the GPU’s rendering speed at higher resolutions. The 24 GB VRAM is not a bottleneck in any of the measured scenarios.

Q: How does this combo rank among all tested combinations in CS:GO?

A: This combo ranks 148th out of 3719 tested combos, placing it in the top 4% of all configurations.

Q: Is the CPU or GPU the limiting factor at 1440p High settings?

A: At 1440p High settings, the average FPS is 640. Given that the GPU is an RTX 4090 and the CPU is an i5-12400F, the data indicates the CPU is the limiting factor, as the FPS is far below what the GPU is capable of rendering, and the FPS drops significantly as resolution increases from 1080p (929 FPS) to 1440p (640 FPS).