Counter-Strike: Global Offensive

Counter-Strike: Global Offensive is notoriously CPU-bound, and the measured FPS data for the Intel Core i5-14400F + NVIDIA GeForce RTX 3080 combination confirms this, showing a dramatic shift in bottleneck behavior as resolution changes. The data reveals that this pairing is so potent at lower resolutions that the GPU is often left waiting on the CPU, while at 4K, the GPU finally begins to pull its weight, though the frame rates remain exceptionally high.

Resolution Scaling

The scaling from 1080p to 4K is steep but linear, indicating a balanced yet CPU-front-loaded system. At 1920x1080 with Low settings, the combo produces 858.3 FPS. Dropping to 2560x1440 Low reduces that to 589 FPS (a 31% decrease), and at 3840x2160 Low, it falls to 351.1 FPS (a 40% decrease from 1440p). This pattern shows that while the GPU is becoming more stressed at higher resolutions, the CPU is still the primary limiter, as even the 4K Low result is far above the refresh rate of any mainstream monitor.

The gap between Low and Ultra settings widens as resolution increases, but the overall trend is consistent. At 1080p, the difference between Low (858.3 FPS) and Ultra (536.6 FPS) is 321.7 FPS. At 1440p, the spread is 217.6 FPS (589 FPS vs 371.4 FPS), and at 4K, it narrows to 129.6 FPS (351.1 FPS vs 221.5 FPS). This compression at higher resolutions is classic GPU-bound behavior; the RTX 3080's workload increases, but the Core i5-14400F still has enough headroom to feed it. The 4K High result of 253.6 FPS and 4K Ultra of 221.5 FPS demonstrate that even at the most demanding settings, the system never dips below the 200 FPS threshold, which is remarkable for a competitive shooter.

The most telling sign of CPU limitation is that the 1080p Low result (858.3 FPS) is more than double the 4K Ultra result (221.5 FPS), but the 1080p Ultra result (536.6 FPS) is still higher than the 4K Low result (351.1 FPS). This indicates that the CPU is so strong that even with a heavier GPU load at 4K Low, the frame rate is still limited by the CPU's ability to process the game's logic, not the GPU's rendering capabilities.

How This Combo Ranks

In the database of tested combinations, this specific pairing ranks 509th out of 1605 total combos for Counter-Strike: Global Offensive. This places it in the top 32% of all tested systems, which is a strong showing for a mid-high range CPU paired with a previous-generation flagship GPU. The rank reflects that while the absolute FPS figures are outstanding, there are many systems with newer or more expensive components that achieve even higher scores in this particular esports title.

The ranking suggests that the i5-14400F + RTX 3080 combo is not the absolute top-tier for CS:GO, but it is firmly in the upper echelon. The 509th position out of 1605 means that over 1,000 other combinations tested slower, which contextualizes the performance: this is a system built for high-refresh-rate competitive play, not necessarily for chasing world-record benchmark numbers. The data indicates that the combo is highly capable, but there is headroom for improvement if the user were to pair a stronger CPU with the RTX 3080.

CPU Role

The Intel Core i5-14400F is a 10-core, 16-thread processor based on the Raptor Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.70 GHz. Its 20 MB of shared L3 cache and 1.25 MB per-core L2 cache are critical for CS:GO, which relies heavily on single-thread performance and cache latency. The processor's Cinebench R23 single-core score of 3093 and multi-core score of 21914 demonstrate its strength, but in CS:GO, the single-core result is more relevant.

The data shows that the CPU is the primary driver of the high frame rates at 1080p. The 10 cores and 16 threads are more than sufficient for the game's engine, which typically uses only a few threads. The boost clock of 4.70 GHz ensures that those primary threads are running at maximum speed. This is why the 1080p Low result reaches 858.3 FPS; the CPU is not the bottleneck. The processor's Passmark single-thread score of 3723 and its overall 88th percentile ranking versus all CPUs confirm that it is a top-tier performer for this workload.

Compared to its nearest rivals, the i5-14400F's average benchmark score of 32508 is essentially tied with the Intel Core i7-12800H (32513, 0% delta) and the AMD Ryzen 5 PRO 7645 (32446, 0.2% delta). This statistical parity means that in synthetic tests, the CPU's performance is indistinguishable from these other options. For CS:GO specifically, this translates to the CPU not being the limiting factor in any of the measured resolutions; the GPU and settings are the variables that change the outcome.

Measured FPS Breakdown

At 1920x1080, the performance is exceptional across all settings. Low settings yield 858.3 FPS, Medium drops to 728.2 FPS, High falls to 626.6 FPS, and Ultra bottoms out at 536.6 FPS. These numbers show that even at Ultra, the system is capable of driving a 360Hz monitor to its maximum refresh rate. The drop from Low to Ultra is 37.5%, which is a significant hit, but the absolute values remain so high that it is irrelevant for gameplay.

Moving to 2560x1440, the frame rates remain extremely high. Low produces 589 FPS, Medium yields 499.9 FPS, High delivers 433.9 FPS, and Ultra achieves 371.4 FPS. The scaling from 1080p to 1440p is roughly 31% at Low settings, but only 30% at Ultra, indicating that the GPU is becoming more involved. Still, the 1440p Ultra result of 371.4 FPS is higher than the 1080p Ultra result of many lesser systems, underscoring the strength of this combo.

At 3840x2160, the GPU finally takes center stage. Low settings produce 351.1 FPS, Medium yields 294 FPS, High drops to 253.6 FPS, and Ultra settles at 221.5 FPS. The 4K Ultra result is 74% of the 1080p Ultra result, showing that the RTX 3080's 10 GB of GDDR6X memory and 760.3 GB/s bandwidth are sufficient to handle the increased pixel count without causing a catastrophic frame rate collapse. The 4K Low result is still above 350 FPS, which is remarkable for a 4K resolution.

FAQ

Q: Is the Intel Core i5-14400F a bottleneck for the RTX 3080 in CS:GO?

A: No. At 1080p Low, the combo reaches 858.3 FPS, which indicates the CPU is not limiting. The CPU's high boost clock of 4.70 GHz and strong single-core performance (Cinebench R23 single-core score of 3093) handle the game's logic efficiently.

Q: What is the best resolution to play CS:GO with this combo?

A: The data shows that 1920x1080 Ultra at 536.6 FPS is excellent, but 2560x1440 High at 433.9 FPS provides a higher fidelity experience with still-massive frame rates. 4K Ultra at 221.5 FPS is also playable for most monitors.

Q: How much FPS do I lose by switching from 1080p Low to 4K Ultra?

A: The measured FPS drops from 858.3 FPS at 1080p Low to 221.5 FPS at 4K Ultra, a loss of 636.8 FPS, or approximately 74%. This is a significant reduction, but the final number remains high.

Q: Does the RTX 3080's VRAM affect performance at 4K?

A: The 10 GB of GDDR6X memory with 760.3 GB/s bandwidth is sufficient. The 4K Ultra result of 221.5 FPS shows no signs of memory capacity throttling in this game.

Q: How does this combo rank compared to others that have been tested?

A: It ranks 509th out of 1605 tested combos for CS:GO, placing it in the top 32% of all systems. This is a strong result, though not the absolute top-tier.

Q: What is the FPS difference between High and Ultra settings at 1440p?

A: At 2560x1440, High yields 433.9 FPS and Ultra yields 371.4 FPS. The difference is 62.5 FPS, or about 14% fewer frames when using Ultra settings.

Settings Recommendations

For users with a high-refresh-rate monitor (240Hz or 360Hz), the data suggests that 1920x1080 with Medium settings (728.2 FPS) or High settings (626.6 FPS) provides the best balance. Both are far beyond the refresh rate of any monitor, so the extra visual fidelity from High is worth the small FPS cost. Low settings (858.3 FPS) offer no practical benefit unless chasing maximum frame times for competitive edge, but the difference between 858 and 626 FPS is imperceptible on any display.

At 2560x1440, the High preset at 433.9 FPS is the recommended choice for most players. It offers a sharper image than 1080p while still delivering frame rates that exceed all but the most extreme monitors. Ultra at 371.4 FPS is also viable, but the visual improvement over High is marginal in a fast-paced game like CS:GO, and the 62.5 FPS drop is not worth it.

For 4K users, the Medium preset at 294 FPS is the sweet spot. High at 253.6 FPS and Ultra at 221.5 FPS are both playable, but Medium provides a 40.4 FPS improvement over High and a 72.5 FPS improvement over Ultra, while still looking significantly better than Low. The Low preset at 351.1 FPS is too visually compromised for a game where spotting enemies is crucial, so Medium is the balanced recommendation.

GPU Role

The NVIDIA GeForce RTX 3080 is based on the Ampere architecture, built on Samsung's 8 nm process, with a die size of 628 mm². Its base clock of 1440 MHz and boost clock of 1710 MHz, combined with 8704 shading units, deliver a peak FP32 performance of 29.77 TFLOPS. The 10 GB of GDDR6X memory on a 320-bit bus provides 760.3 GB/s of bandwidth, which is ample for CS:GO's textures and draw calls.

The GPU's role in this combo is primarily to render at higher resolutions. The measured FPS data shows that at 1080p, the GPU is rarely the bottleneck; the CPU is. However, at 4K, the RTX 3080's workload increases, and the frame rates scale down accordingly. The 4K Ultra result of 221.5 FPS demonstrates that the GPU can handle the pixel throughput, with its pixel rate of 164.2 GPixel/s and texture rate of 465.1 GTexel/s being more than sufficient.

The RTX 3080's 80th percentile ranking versus all GPUs and its Passmark G3D score of 25086 place it as a high-end card, but its nearest rivals show it is not the absolute fastest. The AMD Radeon RX 7900 GRE has an average score of 36101 (0.9% higher), and the AMD Radeon Pro Duo scores 35860 (0.2% higher). This close competition means that in CS:GO, the GPU is not a differentiator at lower resolutions, but at 4K, its 760.3 GB/s bandwidth and 10 GB VRAM are sufficient to prevent any memory-related stuttering, as evidenced by the smooth scaling from High (253.6 FPS) to Ultra (221.5 FPS) at 3840x2160.