Fortnite

Fortnite with the AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 4070 presents a compelling dataset for understanding how a high-end mobile platform handles a competitive Battle Royale title. The measured frames per second (FPS) across resolutions and settings reveal a system that is clearly capable of high refresh rate play, but also exposes significant performance scaling challenges as graphical demands increase. This analysis breaks down the measured results, placing the combo's performance in context with other tested configurations and exploring the roles of the CPU and GPU in shaping the experience.

Resolution Scaling

The measured FPS data shows a dramatic and consistent drop in performance as resolution increases from 1920x1080 to 3840x2160. At the High preset, the average frame rate falls from 134 FPS at 1080p to 85 FPS at 1440p, and finally to just 45 FPS at 4K. This represents a 66% reduction in average FPS from 1080p to 4K. The pattern is similar across all settings, but the absolute frame rates at 4K are the most revealing. With the Low preset, the system manages 82 FPS at 4K, but this is still far below the 245 FPS achievable at 1080p. The scaling from 1440p to 4K is particularly steep; for instance, on the Medium preset, the average FPS drops from 110 to 58, a decrease of 52 FPS.

This scaling behavior strongly implies that the GPU becomes the primary limiting factor at higher resolutions. The computational load on the graphics card increases quadratically with pixel count. At 1080p, the RTX 4070 has sufficient headroom to push very high frame rates, suggesting the CPU is keeping pace. However, as the resolution climbs to 1440p and especially 4K, the GPU's rendering workload becomes the bottleneck, causing frame rates to plummet. The difference between the Low and Ultra presets at 4K is also stark: 82 FPS versus 30 FPS. This indicates that the GPU is heavily taxed by both the resolution and the more demanding visual effects, leading to a severe performance penalty. The data suggests that for 4K gaming, even a capable GPU like the RTX 4070 is stretched thin, and users would need to significantly lower settings to achieve playable frame rates.

How This Combo Ranks

In the database of tested CPU and GPU combinations for Fortnite, this pairing holds a specific position. The combo ranks 1442 out of 2740 tested configurations, placing it in the 53rd percentile of all combos. This is a mid-pack ranking, which is interesting given the high-end nature of both components. The ranking indicates that while this system is far from the slowest, there are numerous other combinations that deliver higher average frame rates in this specific game. The data implies that Fortnite's performance is not solely dependent on raw component power, but also on how the specific CPU and GPU interact.

The ranking is particularly noteworthy because the CPU, the AMD Ryzen 9 8945HX, is a top-tier mobile processor with a benchmark score that places it in the 95th percentile of all CPUs. Its average benchmark score of 76212 is nearly identical to the Intel Core Ultra 9 285HX, which has a score of 76155 and a deltaPct of 0.1%. This means the 8945HX is essentially on par with its closest Intel rival in general compute tasks. However, in this game, the combo's rank suggests that the GPU might be the constraining factor, preventing the powerful CPU from fully expressing its potential. The RTX 4070, while a solid performer at the 81st percentile of all GPUs, is not the absolute fastest available, and its performance envelope likely dictates the overall combo ranking in a game like Fortnite.

GPU Role

The NVIDIA GeForce RTX 4070 is a central figure in these results, and its specifications provide context for the measured frame rates. The GPU features 12 GB of GDDR6X memory on a 192-bit bus, yielding a memory bandwidth of 504.2 GB/s. This is a substantial amount of bandwidth, but the data shows that it is not enough to prevent a significant performance drop at 4K. The GPU's boost clock is listed as 2475 MHz, and its performance in standard benchmarks places it in the 81st percentile of all GPUs. Its average benchmark score of 37648 is very close to that of the NVIDIA Tesla P4 (37628, deltaPct 0.1%) and the AMD Radeon RX Vega 56 (37507, deltaPct 0.4%).

The measured FPS in Fortnite directly reflects the GPU's workload. At 1080p with Low settings, the RTX 4070 can deliver 245 FPS, indicating that the GPU is not the limiting factor at this resolution and settings level. However, the 4K Ultra result of 30 FPS shows the GPU's limits. The 12 GB of VRAM is likely sufficient for the game at 1080p and 1440p, but at 4K with high-resolution textures, it could be a contributing factor to the performance degradation, though the more significant factor is the raw compute and fill-rate demand. The data indicates a clear inverse relationship between the GPU's workload and the resulting frame rate, confirming its role as the primary performance arbiter at higher resolutions.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend heavily on the target resolution and desired frame rate. For competitive play at 1920x1080, the Low preset is the clear choice, delivering an average of 245 FPS. This frame rate is ideal for high-refresh-rate monitors and provides the smoothest gameplay experience. The Medium preset at 1080p still offers a very playable 172 FPS, with better visual fidelity, making it a good compromise. The High preset at 1080p drops to 134 FPS, which is still excellent, but the step up to Ultra brings the average down to 88 FPS, which may not be preferred for fast-paced competitive action.

At 2560x1440, the data suggests that the Low preset is necessary for the highest refresh rates, yielding 156 FPS. The Medium preset provides a good balance at 110 FPS, while High drops to 85 FPS. For a more visually immersive experience at 1440p, High is acceptable, but for maximum competitiveness, Low or Medium is better. At 3840x2160, the results are less encouraging for high refresh rate play. Even the Low preset only manages 82 FPS, which is playable but not ideal for esports. The High preset at 4K yields 45 FPS, and Ultra drops to 30 FPS. For 4K, the recommendation would be to use the Low preset for the best playable experience, as the higher presets result in frame rates that are too low for a competitive shooter. The data clearly shows that this combo is best suited for 1080p and 1440p gaming, where it can achieve high frame rates.

Measured FPS Breakdown

The measured FPS data provides a detailed look at performance across all tested configurations. At 1920x1080, the average frame rates are 245 FPS (Low), 172 FPS (Medium), 134 FPS (High), and 88 FPS (Ultra). The Medium preset also shows a minimum of 147 FPS and a maximum of 198 FPS, indicating some variance but generally stable performance. At 2560x1440, the averages are 156 FPS (Low), 110 FPS (Medium), 85 FPS (High), and 56 FPS (Ultra). The Medium preset at this resolution has a minimum of 93 FPS and a maximum of 126 FPS.

At 3840x2160, the frame rates drop significantly. The Low preset averages 82 FPS, the Medium preset averages 58 FPS (with a min of 49 and max of 67), the High preset averages 45 FPS, and the Ultra preset averages 30 FPS. The data shows a clear and consistent pattern: for each resolution, lowering the settings from Ultra to Low results in a substantial increase in average FPS. The most significant jump at any resolution is from Ultra to High at 1080p, where the average FPS increases by 46 FPS (from 88 to 134). This suggests that the Ultra preset includes particularly demanding effects that have a high performance cost.

FAQ

Q: What is the best resolution for this combo to achieve high frame rates?

A: The data shows the highest frame rates are at 1920x1080. At this resolution, the Low preset achieves 245 FPS, and even the High preset achieves 134 FPS.

Q: How does the combo's performance in Fortnite compare to other tested systems?

A: This combo ranks 1442nd out of 2740 tested combinations, placing it in the 53rd percentile of all tested systems for this game.

Q: Is the GPU or CPU the main bottleneck at 4K resolution?

A: The data strongly suggests the GPU is the limiting factor at 3840x2160. The average FPS drops dramatically compared to 1080p, indicating the GPU cannot handle the increased pixel load.

Q: What is the average FPS difference between the Low and Ultra presets at 1440p?

A: The difference is 100 FPS. The Low preset averages 156 FPS, while the Ultra preset averages only 56 FPS.

Q: What is the maximum average FPS recorded for this combo?

A: The highest average FPS recorded is 245 FPS, achieved at 1920x1080 with the Low settings preset.

Q: How does the CPU's general performance rank compared to other CPUs?

A: The AMD Ryzen 9 8945HX is a high-end processor, with a benchmark score that places it in the 95th percentile of all CPUs. Its average benchmark score is 76212, which is nearly identical to the Intel Core Ultra 9 285HX.

CPU Role

The AMD Ryzen 9 8945HX is a powerful mobile processor with 16 cores and 32 threads, based on the Zen 4 architecture. It has a base clock of 2.50 GHz and a boost clock of 5.40 GHz, and its benchmark scores are exceptional. For instance, it scores 42713 in Cinebench R23 multi-core and 6030 in single-core tests. Its performance in general benchmarks places it in the 95th percentile of all CPUs, and its average benchmark score of 76212 is comparable to the AMD Ryzen 9 9950X3D, which scores 75779 (deltaPct 0.6%), and the Intel Core Ultra 9 285HX, which scores 76155 (deltaPct 0.1%).

Given this processing power, it's clear that the CPU is not the primary bottleneck in Fortnite at higher resolutions. At 1080p, the CPU is likely able to feed the GPU enough data to achieve high frame rates, as evidenced by the 245 FPS result on Low settings. However, as resolution increases, the GPU becomes the limiting factor, and the CPU's high core count and clock speeds are underutilized. The data suggests that this CPU has more than enough headroom for this game, and its role is to ensure that the GPU is never starved of data, particularly at lower resolutions where frame rates are very high. The 16-core, 32-thread configuration is overkill for a game like Fortnite, but it ensures the system can handle any other demanding tasks without issue.