Doom

The AMD Ryzen 5 8400F and NVIDIA GeForce RTX 5080 combination delivers exceptional frame rates in Doom, positioning it firmly in the top tier of tested hardware configurations. With a combo rank of 73 out of 1,681 tested pairings, this system sits in the 95th percentile of all combinations, demonstrating that this CPU-GPU pairing is well-matched for extracting maximum performance from this title. The data reveals a configuration that excels across all resolution classes, though the performance scaling characteristics provide clear insights into where each component's influence is most pronounced.

Resolution Scaling

The measured frame rates show a predictable but significant decline as resolution increases, with the magnitude of the drop revealing the GPU-heavy nature of Doom's rendering workload. At 1080p with High settings, the system produces 313.7 FPS, which falls to 200.7 FPS at 1440p and further to 109.1 FPS at 4K. This represents a 36% reduction from 1080p to 1440p and a further 45.6% reduction from 1440p to 4K, with the total scaling from 1080p to 4K showing a 65.2% performance decrease.

The scaling pattern across settings tiers provides additional context. At Low settings, the transition from 1080p (387 FPS) to 1440p (272.8 FPS) shows a 29.5% drop, while moving to 4K (151.8 FPS) costs another 44.4%. The Medium preset follows a similar trajectory: 366.6 FPS at 1080p, 237.5 FPS at 1440p (35.2% lower), and 129.1 FPS at 4K (another 45.6% reduction). Ultra settings demonstrate the steepest absolute decline, with 258.3 FPS at 1080p dropping to 162.7 FPS at 1440p and 91 FPS at 4K.

These scaling figures indicate that the RTX 5080's rendering throughput becomes the primary constraint as pixel count increases. The consistent percentage drops across all four settings presets suggest that resolution scaling is largely independent of the quality preset chosen, pointing to a GPU-bound scenario at 4K even with the substantial 960.0 GB/s memory bandwidth and 56.28 TFLOPS of FP32 compute available. At 1080p, the relatively modest 16.9% difference between Low and Ultra settings (387 FPS versus 258.3 FPS) hints that the CPU may begin to influence results at lower resolutions, though frame rates remain exceptionally high.

CPU Role

The Ryzen 5 8400F brings six cores and twelve threads based on the Zen 4 architecture, with a base clock of 4.20 GHz and boost clock of 4.70 GHz. The processor's single-thread performance, evidenced by a 3DMark single-thread score of 951 and Cinebench R23 single-core score of 2,943, proves sufficient to feed the RTX 5080 at high frame rates. The 16 MB of shared L3 cache and dual-channel DDR5 memory support with 83.2 GB/s bandwidth provide adequate data delivery for Doom's engine demands.

At 1080p, the CPU's influence becomes more apparent. The gap between Low (387 FPS) and Medium (366.6 FPS) settings measures just 5.3%, while the jump from Medium to High (313.7 FPS) shows a 14.4% reduction. This compression of frame rates at lower quality presets suggests that the CPU's processing capacity begins to limit the maximum achievable FPS, preventing the GPU from fully expressing its capabilities at lower resolutions. The CPU's multi-threaded performance, with a Cinebench R23 multi-core score of 20,851 and PassMark multi-thread score of 24,530, places it in the 82nd percentile of all CPUs, indicating solid headroom for gaming workloads.

Interestingly, the 8400F's nearest rivals in synthetic benchmarks include the AMD Ryzen 7 2700X (0% delta) and AMD Ryzen 5 7500F (0.3% delta), showing that its 6-core/12-thread configuration competes favorably with older and similarly positioned processors. The 4 nm process node and TSMC fabrication contribute to the 65 W TDP, allowing sustained boost behavior that supports consistent frame delivery in extended gaming sessions.

GPU Role

The RTX 5080 serves as the primary performance driver in this configuration, particularly at higher resolutions. Built on the Blackwell 2.0 architecture with 10,752 shading units and 112 ROPs, the GPU delivers 56.28 TFLOPS of FP32 compute. The 16 GB of GDDR7 memory on a 256-bit bus provides 960.0 GB/s of bandwidth, which proves critical for maintaining frame rates at 4K resolution. The boost clock of 2,617 MHz and base clock of 2,295 MHz establish the operating envelope for the 360 W TDP design.

The GPU's synthetic performance metrics show strong positioning, with a PassMark G3D score of 36,565 and 3DMark Steel Nomad DX12 score of 8,637. The 89th percentile ranking among all GPUs confirms its high-end status, though the nearest rival comparisons reveal an interesting anomaly. The Intel Arc A570M posts a 1.6% higher average score, while the Intel Arc Pro A60 trails by 1.9%, indicating that synthetic benchmarks may not fully capture the RTX 5080's real-world gaming performance in Doom.

The measured frame rates demonstrate the GPU's scaling behavior clearly. At 4K, the difference between Low (151.8 FPS) and Ultra (91 FPS) settings represents a 40.1% performance penalty, showing the substantial computational cost of higher quality presets at this resolution. The GPU's memory bandwidth and compute resources are taxed heavily at 4K, with the 109.1 FPS High score and 129.1 FPS Medium score indicating that even this high-end GPU cannot maintain triple-digit frame rates at maximum quality settings in 4K.

How This Combo Ranks

The combination ranks 73rd out of 1,681 tested CPU-GPU pairings for Doom, placing it in the top 4.3% of all configurations. This ranking reflects the synergy between the 8400F's capable Zen 4 architecture and the RTX 5080's Blackwell 2.0 GPU, which together avoid significant bottlenecking at any resolution. The CPU's 82nd percentile standing and GPU's 89th percentile ranking both contribute to this strong overall position.

The ranking becomes more meaningful when considering the performance gaps between settings presets. At 4K Ultra, the system produces 91 FPS, which is comfortably above playable thresholds while representing the most demanding scenario tested. The 4K High setting at 109.1 FPS shows that dropping from Ultra to High yields a 19.9% performance improvement, making this the most efficient quality trade-off at 4K. The 1440p results show even more headroom, with all presets exceeding 160 FPS, and the 1080p results demonstrate the system's ability to drive high-refresh-rate displays with frame rates ranging from 258.3 FPS at Ultra to 387 FPS at Low.

Measured FPS Breakdown

The complete measured frame rate data reveals consistent performance scaling across all resolution and settings combinations. At 1920x1080, the system achieves 387 FPS at Low, 366.6 FPS at Medium, 313.7 FPS at High, and 258.3 FPS at Ultra. The progression from Low to Ultra shows a 33.3% total performance reduction, with the largest single-step drop occurring between High and Ultra at 17.7%.

At 2560x1440, the frame rates measure 272.8 FPS at Low, 237.5 FPS at Medium, 200.7 FPS at High, and 162.7 FPS at Ultra. The scaling from Low to Ultra represents a 40.4% decrease, with the Medium to High transition showing a 15.5% reduction. At 3840x2160, the results are 151.8 FPS at Low, 129.1 FPS at Medium, 109.1 FPS at High, and 91 FPS at Ultra. The 1080p to 4K scaling at each preset shows consistent reductions: 60.8% for Low, 64.8% for Medium, 65.2% for High, and 64.8% for Ultra.

Settings Recommendations

The measured data suggests that the High preset offers the optimal balance of visual quality and performance for most scenarios. At 4K, High settings deliver 109.1 FPS, which provides smooth gameplay while maintaining significant visual fidelity over Medium (129.1 FPS), which shows only a 18.3% improvement despite the quality reduction. The jump from High to Ultra at 4K costs 16.6% of performance (109.1 to 91 FPS) for what is typically a marginal visual improvement in Doom's rendering.

For users targeting 1440p displays, the High preset at 200.7 FPS provides ample headroom for high-refresh-rate monitors, while Ultra at 162.7 FPS remains viable for 144 Hz displays. At 1080p, all presets exceed 258 FPS, making the choice purely visual preference rather than performance necessity. The Low preset's 387 FPS at 1080p and 272.8 FPS at 1440p serve esports-focused users, though the 151.8 FPS at 4K Low indicates that even minimal settings cannot fully overcome the GPU's resolution scaling limitations. The Ultra preset at 1440p (162.7 FPS) and 1080p (258.3 FPS) demonstrates that maximum quality remains playable at lower resolutions, making High the recommended default with Ultra reserved for 1440p and below.