Fortnite

Resolution Scaling

The measured FPS data for Fortnite on this AMD Ryzen 5 8400F + NVIDIA GeForce RTX 3070 combination reveals a clear pattern of GPU-bound behavior as resolution increases. At 1080p with Low settings, the system produces 278 FPS average, but this drops to 176 FPS at 1440p and 93 FPS at 4K. That represents a 37% reduction from 1080p to 1440p and a further 47% reduction from 1440p to 4K, showing how aggressively pixel count impacts frame rates.

The scaling pattern shifts when looking at Ultra settings. At 1080p Ultra, the average FPS is 100, falling to 64 FPS at 1440p and 34 FPS at 4K. The 1080p-to-1440p drop of 36% is consistent with the Low setting behavior, but the 1440p-to-4K drop of 47% is steeper in percentage terms compared to the Low preset's 47% reduction. This suggests that at Ultra settings, the GPU is working closer to its limits even at lower resolutions, and the additional pixel load at 4K pushes it into a more constrained performance envelope.

Medium settings provide the most complete dataset with min and max FPS values recorded. At 1080p Medium, the average is 196 FPS with a range from 166 to 225 FPS. At 1440p Medium, the average drops to 124 FPS with a range of 106 to 143 FPS, and at 4K Medium the average is 66 FPS with a range of 56 to 76 FPS. The min-to-max spread at each resolution is remarkably consistent at roughly 30% of the average value, indicating that frame pacing remains stable regardless of resolution.

The data indicates that the limiting component shifts with resolution. At 1080p, the CPU's single-thread performance can keep up with the GPU's output, as evidenced by the 278 FPS Low result approaching the practical limits of many display refresh rates. As resolution climbs to 4K, the GPU's 8 GB memory buffer and 448.0 GB/s bandwidth become the primary constraint, with the 51 FPS High result showing the system struggling to maintain smooth gameplay at the highest pixel counts.

FAQ

Q: What is the best resolution for competitive play with this combo?

A: The data shows 1080p Low delivers 278 FPS average, which is the highest measured result. For esports-style play where maximum frame rate is prioritized, this setting combination provides the largest performance headroom.

Q: How does the 4K Ultra performance compare to 1080p Ultra?

A: At 4K Ultra, the average FPS is 34, while 1080p Ultra achieves 100 FPS average. This represents a 66% reduction in frame rate when moving from 1080p to 4K at the highest settings.

Q: Is the RTX 3070's 8 GB VRAM sufficient for Fortnite at high resolutions?

A: The GPU features 8 GB of GDDR6 memory on a 256-bit bus with 448.0 GB/s bandwidth. The measured results show 4K High produces 51 FPS average, which suggests the memory configuration handles the game's demands at this settings level, though performance drops to 34 FPS at 4K Ultra.

Q: What frame rates can players expect at 1440p Medium?

A: The measured data shows 124 FPS average at 1440p Medium, with a minimum of 106 FPS and maximum of 143 FPS. This provides a smooth experience for most display refresh rates.

Q: How does this combo rank among all tested systems for Fortnite?

A: The combination ranks 1592 out of 3700 tested combos, placing it in the 43rd percentile of all systems benchmarked for this game.

Q: Does the CPU's 6-core/12-thread configuration bottleneck the GPU?

A: The Ryzen 5 8400F has a boost clock of 4.70 GHz and the benchmark results show it delivers 951 points in single-thread 3DMark testing. At 1080p Low where the GPU produces 278 FPS, the CPU appears capable of feeding frames, but at 4K the GPU becomes the clear limiting factor.

GPU Role

The NVIDIA GeForce RTX 3070 serves as the primary rendering engine for this Fortnite configuration, and its performance characteristics directly shape the measured results. The GPU operates with a base clock of 1500 MHz and a boost clock of 1725 MHz, built on the Ampere architecture with 5888 shading units. Its 46 RT cores and 184 tensor cores provide hardware acceleration for ray-traced effects and DLSS, though the measured FPS data uses conventional rasterization at various quality presets.

The memory subsystem is critical for Fortnite's performance at higher resolutions. The 8 GB GDDR6 frame buffer with a 256-bit bus width delivers 448.0 GB/s of bandwidth, which becomes increasingly strained as resolution climbs from 1080p to 4K. The pixel rate of 165.6 GPixel/s and texture rate of 317.4 GTexel/s define the theoretical fill rate limits, and the benchmark data shows these limits being approached at 4K Ultra where the average FPS falls to 34.

Comparing to nearest rivals, the RTX 3070's average benchmark score of 17208 places it 0.7% above the AMD Radeon RX 7600 XT (17083 score) and 1% above the NVIDIA GeForce GTX 690 (17037 score). It trails the NVIDIA Tesla K40c by 1.5% (17468 score). The GPU's 61st percentile ranking among all GPUs indicates it sits above the median but not in the top tier of performance.

The FP32 compute throughput of 20.31 TFLOPS allows the GPU to handle Fortnite's physics and rendering workloads efficiently, but the measured FPS data shows that memory bandwidth becomes the more significant constraint at high resolutions. The 93 FPS result at 4K Low versus 34 FPS at 4K Ultra demonstrates how settings that increase memory pressure and shader complexity disproportionately impact performance, while the 51 FPS at 4K High shows a middle ground.

How This Combo Ranks

This AMD Ryzen 5 8400F + NVIDIA GeForce RTX 3070 combination ranks 1592 out of 3700 tested combos for Fortnite, placing it in the 43rd percentile of all systems benchmarked. This position reflects a balanced pairing where neither component drastically bottlenecks the other, but the overall system sits in the lower-middle portion of the performance distribution.

The CPU's average benchmark score of 25005 places it in the 77th percentile among all CPUs, while the GPU's average score of 17208 places it in the 61st percentile among all GPUs. The disparity between these percentiles suggests the GPU is the more limiting factor for game performance, which aligns with the resolution scaling data showing larger FPS drops at higher pixel counts.

In the context of the 3700 combos tested, the 1592 rank means roughly 43% of systems outperform this configuration in Fortnite. This places the combo in a competitive position for 1080p and 1440p gaming, where the measured FPS results are generally smooth, but at 4K the system falls behind many higher-end configurations that feature more powerful GPUs.

The CPU's nearest rivals include the AMD Ryzen 5 7500F with a delta of 0.2% and the Intel Core i7-11850H at 0.3%, indicating the 8400F is well-positioned within its CPU tier. The GPU's nearest rivals show similar tight clustering, with the RX 7600 XT at 0.7% and GTX 690 at 1%, suggesting the RTX 3070 sits at the boundary between mid-range and high-end graphics performance.

CPU Role

The AMD Ryzen 5 8400F provides the processing foundation for this Fortnite configuration, featuring 6 cores and 12 threads based on the Zen 4 architecture in the Phoenix codename. The processor operates at a base clock of 4.20 GHz and boosts to 4.70 GHz, with a 65 W TDP that keeps thermal requirements modest. The CPU's 4 nm process node from TSMC with 25,000 million transistors on a 178 mm² die delivers strong single-thread performance, which is critical for Fortnite's game logic and physics calculations.

The CPU's benchmark results show a single-thread 3DMark score of 951 and a 2-thread score of 1874, indicating solid per-core performance. Multi-threaded scaling is evident in the 16-thread score of 6091 and max-thread score of 6165, which are only slightly higher than the 8-thread score of 5275, suggesting diminishing returns beyond 8 threads for this workload. The Cinebench R23 results of 2943 single-core and 20851 multi-core confirm the CPU's capability to handle both lightly-threaded and heavily-threaded scenarios.

The 16 MB shared L3 cache and 1 MB per-core L2 cache provide adequate data locality for Fortnite's streaming world and building mechanics. Memory support for DDR5 with dual-channel configuration delivers 83.2 GB/s of bandwidth, which helps feed the GPU with game data. The CPU's PCIe Gen 4 interface with 20 lanes ensures the RTX 3070 can communicate at full bandwidth through its PCIe 4.0 x16 connection.

At 1080p Low settings, the CPU's single-thread performance is sufficient to drive the GPU to 278 FPS average, indicating no significant CPU bottleneck at this resolution. However, the CPU's 77th percentile ranking among all CPUs, when paired with the GPU's 61st percentile, suggests that in CPU-bound scenarios at low resolutions, the processor holds its own but does not provide excessive headroom for future upgrades.

Measured FPS Breakdown

At 1080p resolution, the measured FPS results show a wide performance range across settings. Low settings produce 278 FPS average, Medium produces 196 FPS with a range of 166 to 225 FPS, High produces 152 FPS, and Ultra produces 100 FPS. The progression from Low to Ultra shows a 64% reduction in average frame rate, demonstrating the significant impact of quality presets on performance at this resolution.

Moving to 1440p, the results show 176 FPS at Low, 124 FPS at Medium with a range of 106 to 143 FPS, 96 FPS at High, and 64 FPS at Ultra. The reduction from 1080p to 1440p ranges from 37% at Low to 36% at Ultra, showing consistent scaling across settings. The Medium setting's min-to-max range of 37 FPS is slightly tighter than the 59 FPS range at 1080p Medium, suggesting better frame consistency at the higher resolution.

At 4K, the performance envelope narrows considerably. Low settings produce 93 FPS, Medium produces 66 FPS with a range of 56 to 76 FPS, High produces 51 FPS, and Ultra produces 34 FPS. The 4K Medium range of 20 FPS is the tightest of all measured configurations, indicating that the system stabilizes at lower frame rates when GPU-bound.

The complete dataset reveals that the 1080p Low result of 278 FPS is nearly three times the 4K Ultra result of 34 FPS, highlighting the extreme performance differential across the resolution and settings matrix. The Medium settings provide the most complete data with min/max values at all three resolutions, making them the most reliable reference for expected frame time variance.