Fortnite

# Fortnite CPU/GPU Analysis: Intel Core i5-12400 + NVIDIA GeForce RTX 3080

The Intel Core i5-12400 paired with the NVIDIA GeForce RTX 3080 delivers a remarkably balanced Fortnite experience, with the data showing this combination ranks 1043rd out of 3700 tested combos in the game. The i5-12400 is a 6-core, 12-thread Alder Lake-S desktop processor with a 2.50 GHz base clock and 4.40 GHz boost, while the RTX 3080 is an Ampere-architecture GPU with 10 GB of GDDR6X memory on a 320-bit bus. Across the measured resolutions and settings, this pairing shows a clear pattern: the CPU keeps pace at 1080p, while the GPU becomes increasingly dominant as resolution climbs to 4K. The benchmark results indicate a system that can push well beyond 100 FPS at most settings, with only the most demanding 4K Ultra preset dipping below the 60 FPS threshold.

CPU Role

The Intel Core i5-12400 anchors this system with 6 physical cores and 12 threads, running at a 2.50 GHz base clock and boosting up to 4.40 GHz. This Alder Lake-S processor, built on Intel's 10 nm process with a 163 mm² die, carries 18 MB of shared L3 cache and 1.25 MB of L2 cache per core. Its 65 W TDP classifies it as a mainstream desktop part, yet the benchmark data shows it performs well above its modest power envelope. The i5-12400 scores 15989 in Cinebench R23 multi-core and 2257 in single-core, with a PassMark single-thread score of 3456. These figures place the CPU at the 72nd percentile among all CPUs, with an average benchmark score of 18683.

The processor's nearest rivals in the database illustrate its competitive position. The AMD EPYC 7643 scores 18697, just 0.1% higher, while the Intel Core i7-1355U trails by 0.3% at 18730. The AMD Ryzen AI 5 330 is 0.7% ahead at 18811, and the Intel Core i3-14100F sits 0.9% behind at 18519. This clustering suggests the i5-12400 sits in a dense performance tier where architectural differences matter less than workload-specific behavior. In Fortnite specifically, the CPU's 6-core/12-thread configuration proves sufficient; the measured FPS data shows no signs of a CPU bottleneck at 1080p, where the GPU should theoretically be the limiting factor. At 1080p Low, the system reaches 324 FPS average, indicating the i5-12400 can feed the RTX 3080 enough frames to approach the practical limits of high-refresh displays.

The 3DMark thread scaling data reveals how the CPU behaves under varying load levels. The 2-thread score of 1692 and 4-thread score of 3012 show strong single-threaded scaling, while the 8-thread score of 4745 and 16-thread score of 5873 demonstrate diminishing returns beyond 8 threads. For Fortnite, which typically utilizes multiple cores but rarely saturates 12 threads, this scaling profile is ideal — the CPU has enough headroom for background tasks and game logic without compromising frame pacing. The PassMark physics score of 1105, while not directly comparable to game physics, reinforces that the i5-12400 handles compute-heavy workloads with adequate capacity.

GPU Role

The NVIDIA GeForce RTX 3080 is the visual powerhouse here, built on the 8 nm Ampere architecture with the GA102 chip containing 28,300 million transistors on a 628 mm² die. Its 10 GB of GDDR6X memory runs at 19 Gbps effective, delivering 760.3 GB/s of bandwidth across a 320-bit bus — a configuration that proves crucial for Fortnite's high-texture environments at 4K resolution. The GPU's boost clock of 1710 MHz (1440 MHz base) drives 8704 shading units, 272 TMUs, and 96 ROPs, with 68 RT cores and 272 tensor cores handling ray tracing and DLSS workloads. The FP32 performance of 29.77 TFLOPS places the RTX 3080 firmly in the high-end segment of its generation.

The GPU's benchmark results show a PassMark G3D score of 25086 and a Geekbench OpenCL score of 152423, with a Vulkan score of 33620. These figures land the RTX 3080 at the 68th percentile among all GPUs, with an average benchmark score of 23172. Its nearest rivals in the database — the NVIDIA P106-100 (23249, 0.3% higher), AMD Radeon Pro Vega 16 (23250, 0.3% higher), AMD Radeon RX 6600M (23273, 0.4% higher), and AMD Radeon R9 M290X (23276, 0.4% higher) — are all within 0.4% of the RTX 3080's average score, though these are primarily workstation or mobile parts with different feature sets. The RTX 3080's real advantage lies in its raw rasterization throughput and memory bandwidth, which translate directly to Fortnite's frame rates.

In the measured FPS data, the GPU's role becomes evident as resolution increases. At 1080p, the RTX 3080 is clearly the dominant component, with frame rates scaling from 117 FPS at Ultra to 324 FPS at Low — a 2.77x spread that reflects GPU workload scaling. At 4K, the GPU's memory bandwidth and compute power are stretched, with the same settings spread showing 39 FPS at Ultra versus 109 FPS at Low. The 10 GB VRAM capacity, while not explicitly tested in these measurements, is sufficient for Fortnite's texture requirements at all tested settings, as evidenced by the absence of any anomalous frame drops in the data. The GPU's 68 RT cores remain largely idle in standard Fortnite play, but they provide headroom for future feature additions or ray-traced modes.

Resolution Scaling

The resolution scaling pattern across the measured FPS data tells a clear story about which component limits performance at each setting. At 1080p Low, the system achieves 324 FPS, which drops to 206 FPS at 1440p (a 36.4% reduction) and 109 FPS at 4K (a 66.4% reduction from 1080p). This steep decline with resolution indicates the GPU is the primary bottleneck even at Low settings — the CPU has enough headroom to maintain high frame rates, but the GPU's fill rate and shading capacity diminish as pixel count rises. The 1080p Low result of 324 FPS suggests the i5-12400 could push even higher if the GPU were stronger, but for practical purposes, this combination is GPU-limited across all resolutions.

The Medium settings show a similar trend with a gentler slope. At 1080p Medium, the system averages 228 FPS with a minimum of 194 and maximum of 262. This drops to 145 FPS at 1440p (min 123, max 167) and 77 FPS at 4K (min 65, max 88). The 1440p Medium result represents a 36.4% drop from 1080p, while 4K Medium falls 66.2% — nearly identical percentages to Low settings. This consistency suggests that the scaling factor is resolution-driven rather than settings-driven; the GPU's workload increases proportionally with pixel count regardless of the quality preset.

High settings show a more pronounced drop between 1080p and 1440p. The 177 FPS at 1080p High falls to 112 FPS at 1440p (a 36.7% reduction) and then to 59 FPS at 4K (a 66.7% reduction from 1080p). The Ultra preset reveals the most extreme scaling: 117 FPS at 1080p, 74 FPS at 1440p (36.8% lower), and 39 FPS at 4K (66.7% lower). The consistency of these percentage drops — all hovering around 36-37% for 1080p-to-1440p and 66-67% for 1080p-to-4K — indicates a purely GPU-bound scenario where the CPU contributes negligible performance variation across resolutions. The i5-12400's role remains constant; the RTX 3080's diminishing returns at higher resolutions are the sole driver of these frame rate declines.

Measured FPS Breakdown

The measured FPS data provides a complete picture of this combination's performance across three resolutions and four settings presets. At 1920x1080, the system delivers its highest frame rates: 324 FPS at Low, 228 FPS at Medium (with a 194-262 FPS range), 177 FPS at High, and 117 FPS at Ultra. These figures show that even at Ultra, the RTX 3080 maintains a frame rate well above the 60 FPS threshold for smooth gameplay, making 1080p a resolution where users can enable maximum quality without sacrificing competitive responsiveness.

Moving to 2560x1440, the results remain strong but show the expected decline. Low settings produce 206 FPS, Medium averages 145 FPS (123-167 range), High reaches 112 FPS, and Ultra drops to 74 FPS. The 1440p Ultra result of 74 FPS is still playable for most users, though competitive players may prefer High or Medium to maintain higher refresh rates. The 1440p Medium result of 145 FPS offers a strong balance of visual quality and speed, with the 123 FPS minimum ensuring consistent frame delivery even during busy scenes.

At 3840x2160, the system's limits become apparent. Low settings achieve 109 FPS, Medium averages 77 FPS (65-88 range), High drops to 59 FPS, and Ultra falls to 39 FPS. The 4K High result of 59 FPS sits just below the 60 FPS threshold, meaning users targeting 4K will need to use Medium or Low settings for a consistently smooth experience. The 4K Ultra result of 39 FPS is unsuitable for fast-paced gameplay, though it could be acceptable for visual showcase purposes or less demanding content. The Medium preset at 4K, with its 65 FPS minimum, represents the safest choice for 4K gaming on this hardware.

FAQ

Q: Can this system run Fortnite at 4K with playable frame rates?

A: Yes, but only at lower settings. The data shows 109 FPS at 4K Low and 77 FPS at 4K Medium (with a 65 FPS minimum). At 4K High, the average drops to 59 FPS, and Ultra falls to 39 FPS, so Medium is the recommended 4K preset for consistent performance.

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

A: 1080p offers the highest frame rates, with 324 FPS at Low and 228 FPS at Medium. The 1440p Low result of 206 FPS is also competitive, but 1080p Low provides the maximum frame rate headroom for high-refresh monitors.

Q: How does the CPU compare to its nearest rivals in synthetic benchmarks?

A: The i5-12400 scores 18683 on average, which is 0.1% below the AMD EPYC 7643 (18697), 0.3% below the Intel Core i7-1355U (18730), 0.7% below the AMD Ryzen AI 5 330 (18811), and 0.9% above the Intel Core i3-14100F (18519).

Q: Is the GPU the limiting factor at all resolutions in Fortnite?

A: Yes, the data indicates the RTX 3080 is the primary bottleneck across all tested resolutions and settings. The percentage drops from 1080p to 4K are nearly identical (around 66-67%) regardless of settings, which is characteristic of GPU-bound performance.

Q: What frame rate can I expect at 1440p Ultra settings?

A: The measured average is 74 FPS at 1440p Ultra. This is above the 60 FPS threshold, making it playable, but noticeably lower than the 112 FPS at 1440p High or the 145 FPS at 1440p Medium.

Q: Does the 10 GB VRAM on the RTX 3080 cause issues at 4K?

A: The measured data shows no anomalies or frame drops that would indicate VRAM capacity problems at 4K. The 4K Medium result maintains a 65 FPS minimum, suggesting the 10 GB GDDR6X memory with 760.3 GB/s bandwidth is sufficient for Fortnite's textures at these settings.

Settings Recommendations

The optimal settings preset depends heavily on the target resolution and performance priorities. At 1080p, the Ultra preset delivers 117 FPS, which is more than adequate for most displays and provides the best visual fidelity. However, for competitive play where frame rate is paramount, the Low preset at 324 FPS offers the maximum responsiveness, while Medium at 228 FPS (with a 194 FPS minimum) provides a strong balance of visuals and speed. The 1080p High preset at 177 FPS is also an excellent middle ground, offering better textures than Medium without the performance cost of Ultra.

For 1440p gaming, the Medium preset at 145 FPS (123-167 range) stands out as the best overall choice. It delivers smooth gameplay with a comfortable margin above 120 FPS, while the 123 FPS minimum ensures no noticeable stuttering. The High preset at 112 FPS is also viable for users who prioritize image quality, but the Ultra preset at 74 FPS, while playable, offers diminishing returns in visual quality for a significant frame rate cost. Competitive players at 1440p may still prefer Low at 206 FPS, but this sacrifices too much visual detail for most users.

At 4K, the Medium preset is the clear recommendation. The 77 FPS average with a 65 FPS minimum keeps gameplay smooth without dipping below the 60 FPS threshold, while Low at 109 FPS sacrifices too much visual quality. The High preset at 59 FPS is borderline — users with variable refresh rate displays may tolerate it, but the Medium preset offers a safer margin. The Ultra preset at 39 FPS is not recommended for actual gameplay; it is only suitable for screenshots or non-interactive viewing. For users with high-refresh 4K displays (120 Hz or higher), the Low preset at 109 FPS is the only option that approaches the refresh rate, but the visual compromise is substantial. Overall, the data suggests this system is best suited for 1080p or 1440p gaming at High or Ultra settings, with 4K reserved for Medium or Low presets depending on the user's tolerance for visual downgrades.