Fortnite

The Intel Core i5-13400F paired with the NVIDIA GeForce RTX 5090 produces a striking performance curve in Fortnite, one that clearly separates the responsibilities of the CPU and GPU across resolutions. At 1080p with Low settings, the combo delivers an average of 436 FPS, a figure that drops to 267 FPS on High and 176 FPS on Ultra. Moving to 1440p, the average at Low is 311 FPS, at High it is 170 FPS, and at Ultra it falls to 112 FPS. At 4K, the numbers compress significantly: Low averages 164 FPS, High averages 90 FPS, and Ultra drops to 59 FPS. The scaling pattern from 1080p to 4K is steep but not uniform; the gap between Low and Ultra at 1080p is 260 FPS, while at 4K that same gap narrows to 105 FPS.

This behavior indicates that at lower resolutions, the frame rate is heavily influenced by the CPU’s ability to feed the GPU, while at 4K the GPU becomes the dominant constraint. The RTX 5090’s raw compute power is immense, but even it cannot maintain triple-digit averages at 4K Ultra in Fortnite. The data shows a 55% drop in average FPS from 1080p Low to 4K Low (436 to 164), which is a larger relative decline than the 33% drop from 1080p High to 4K High (267 to 90). This asymmetry suggests that the game’s Low preset is more CPU-bound at 1080p, allowing the GPU to idle less, whereas the High preset shifts more load onto the GPU, making the resolution scaling appear less severe in percentage terms but still resulting in a hard performance ceiling at 4K.

How This Combo Ranks

Within the benchmark database, this specific CPU-GPU combination ranks 97th out of 3,700 tested combos for Fortnite. That places it in the top 2.6% of all configurations tested for this title, which is a strong result but not the absolute top. The rank reflects the balance between the i5-13400F’s mid-range processing power and the RTX 5090’s flagship-class graphics capability. The CPU itself holds a 77th percentile ranking among all processors, while the GPU sits at the 92nd percentile among all graphics cards, so the combo’s overall rank is constrained by the CPU being the weaker link.

The measured FPS at 1440p Medium (219 average) and 4K Medium (116 average) are solid numbers for competitive play, but the rank suggests that other combinations—likely featuring higher-end CPUs—achieve better results in Fortnite specifically. The game is known for being sensitive to single-thread performance, and while the i5-13400F has a boost clock of 4.60 GHz, it is not the fastest processor in the database. The combo’s rank of 97 means there are 96 other configurations that produce higher average FPS in this game, which is a meaningful gap when chasing maximum frame rates at 1080p or 1440p.

GPU Role

The NVIDIA GeForce RTX 5090 is the dominant component in this pairing, and its specifications explain why it performs so well in Fortnite. It features 32 GB of GDDR7 memory on a 512-bit bus, yielding a memory bandwidth of 1.79 TB/s. This is critical for Fortnite’s high-resolution textures, and the data shows that even at 4K Medium, the card maintains a 116 FPS average with a minimum of 98 FPS. The GPU’s boost clock of 2407 MHz and base clock of 2017 MHz are high, but the real headroom comes from its 21,760 shading units and 176 ROPs, which allow it to brute-force pixel throughput.

At 1080p, the RTX 5090 is often underutilized because the CPU cannot feed it enough frames; the 436 FPS average at Low is likely hitting a CPU-imposed limit. However, the GPU’s impact becomes clear when comparing settings at the same resolution. At 4K, moving from Low to Medium only drops the average from 164 to 116 FPS (a 29% reduction), while moving from Medium to Ultra cuts it down to 59 FPS (a 49% reduction from Medium). This shows that the GPU’s memory bandwidth and compute throughput are sufficient for Medium settings at 4K, but Ultra settings push the shading and texture work beyond what the card can handle in real-time. The GPU’s 92nd percentile ranking among all graphics cards confirms its high-end status, but Fortnite’s engine does not fully exploit every feature, leaving some headroom unused.

FAQ

Q: What is the best resolution for this combo in Fortnite?

A: The measured data shows that 1440p High delivers a 170 FPS average, which is a strong balance. At 4K High, the average drops to 90 FPS, which is still playable but not ideal for competitive play. The sweet spot in the data is 1440p Medium at 219 FPS average, offering high frame rates with decent visual quality.

Q: Why does the frame rate drop so much from 1080p to 4K?

A: The drop is primarily due to GPU load scaling with pixel count. At 1080p Low, the combo averages 436 FPS, but at 4K Low it averages 164 FPS, a 62% reduction. This indicates the GPU is the limiting factor at higher resolutions, while at 1080p the CPU becomes the bottleneck, as evidenced by the smaller absolute FPS differences between Low and High at that resolution.

Q: Is the RTX 5090 overkill for this game?

A: The data suggests that at 1080p and 1440p, the CPU limits performance. At 1080p Low, the average is 436 FPS, but the CPU’s 3DMark single-thread score of 960 and max-thread score of 7,307 indicate it cannot sustain higher rates. At 4K Ultra, the GPU is the bottleneck, averaging 59 FPS. So, the card is not overkill at 4K Ultra, but it is underutilized at lower resolutions.

Q: How does the i5-13400F compare to its nearest rivals?

A: The i5-13400F has an average benchmark score of 25,292. Its nearest rival, the AMD Ryzen 9 6900HS, scores 25,284, a delta of 0%. The Intel Core 5 120 scores 25,362 (0.3% higher), and the AMD Ryzen 5 5600X3D scores 25,365 (0.3% higher). These differences are negligible, meaning the CPU’s performance is very close to these competitors in general benchmarks.

Q: What settings should I use for a 4K experience?

A: The data shows 4K Medium averages 116 FPS with a minimum of 98 FPS, which is the best 4K option for smooth gameplay. 4K High drops to 90 FPS, and 4K Ultra falls to 59 FPS. Medium is the recommended preset for 4K based on the measured rows.

Q: Does the CPU’s 10-core, 16-thread configuration help in Fortnite?

A: Fortnite benefits from the multi-threaded performance, as shown by the CPU’s Cinebench R23 multi-core score of 22,604. However, the game is also sensitive to single-thread speed, and the i5-13400F’s single-core score of 3,191 in Cinebench R23 is moderate. The measured FPS at 1080p Low (436) suggests the CPU can handle high frame rates, but the 3DMark 16-thread score of 7,314 indicates it is not the fastest option available.

CPU Role

The Intel Core i5-13400F 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 4.60 GHz. Its 20 MB of shared L3 cache is a key feature for gaming, as Fortnite’s engine frequently accesses game state data. The CPU’s benchmark scores show it is a solid mid-range performer: it scores 22,604 in Cinebench R23 multi-core and 3,191 in single-core, with a PassMark multi-thread score of 25,032. In Fortnite, the CPU’s role becomes evident when comparing FPS at 1080p Low versus 1440p Low. At 1080p Low, the average is 436 FPS, while at 1440p Low it is 311 FPS—a 29% drop that is largely due to the GPU taking on more pixel work, but the CPU still has to maintain the game logic and draw calls.

The data suggests that the i5-13400F is a capable but not exceptional gaming CPU for this title. Its 77th percentile ranking among all CPUs puts it above average, but the combo’s 97th rank in Fortnite indicates that other CPUs can push the RTX 5090 further. The CPU’s 3DMark single-thread score of 960 is relatively low compared to the max-thread score of 7,307, which shows that it relies on multi-core scaling for performance. In Fortnite, which is often single-thread limited at high frame rates, this could be the reason the combo does not break into the top 50. The CPU’s memory support for DDR4 and DDR5 is a plus, but the dual-channel bus may limit bandwidth in some scenarios, though the measured FPS does not show a clear bottleneck from memory.

Settings Recommendations

Based on the measured FPS rows, the optimal settings for this combo depend heavily on the target resolution. For 1080p, the data shows that Medium settings provide a 345 FPS average with a minimum of 293 FPS, which is a strong choice for high-refresh-rate monitors. Low settings push the average to 436 FPS, but the visual quality loss is significant. High settings at 1080p yield 267 FPS, while Ultra drops to 176 FPS. For competitive play at 1080p, Medium offers the best balance of frame rate and visual fidelity, as the minimum FPS of 293 ensures no major drops.

At 1440p, the recommended preset is Medium, which delivers a 219 FPS average with a minimum of 186 FPS. This is a playable range for most gamers and provides a significant visual upgrade over Low, which averages 311 FPS but looks much worse. High at 1440p averages 170 FPS, which is still smooth, but the jump from Medium to High costs 49 FPS on average. Ultra at 1440p averages 112 FPS, which is playable but not ideal for fast-paced battle royale situations where reaction time matters.

For 4K, the only viable option for smooth gameplay is Medium, which averages 116 FPS with a minimum of 98 FPS. High at 4K drops to 90 FPS, and Ultra falls to 59 FPS, which is below the 60 FPS threshold for comfortable play. Given the data, the best experience across all resolutions is to use Medium settings—it provides the highest minimum FPS scores at each resolution while maintaining a reasonable visual quality. At 1080p, Medium’s 345 FPS average and 293 FPS minimum make it the most consistent choice; at 1440p, the 219 FPS average is ideal; and at 4K, the 116 FPS average is the only preset that stays above 100 FPS. This aligns with the GPU’s performance characteristics, which show that Medium settings are within its comfort zone, while Ultra pushes the hardware beyond its limits.