Doom

Doom, the 2016 reboot, is a fast-paced FPS that scales dramatically across resolutions and settings. The data for the AMD Ryzen 5 8400F and NVIDIA GeForce RTX 4070 combination shows a system that delivers exceptional performance, firmly positioning itself in the 72nd percentile of all tested combos (rank 479 out of 1681). The following analysis breaks down the measured frame rates to explain how this pairing behaves, what limits it, and where the best experience lies.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured data reveals a clear and consistent scaling pattern as resolution increases. At 1080p with Low settings, the combo achieves an average of 312.8 FPS. Moving to 1440p drops that to 202.4 FPS, a reduction of 110.4 FPS (35.3%). Pushing further to 4K yields 111 FPS, which is another 91.4 FPS drop from 1440p (45.2%). This pattern—where the absolute FPS loss roughly doubles at each higher step—indicates a shift in the bottleneck.

At 1080p, the frame rates are so high that the AMD Ryzen 5 8400F, with its 6 cores and 12 threads, is likely the primary limiting factor. The CPU’s Cinebench R23 multi-core score of 20851 and single-core score of 2943 show it is a strong processor, but it cannot feed the GPU enough data to push past the 300 FPS mark. The RTX 4070, with its 5888 shading units and boost clock of 2475 MHz, is effectively waiting for the CPU at this resolution.

The situation inverts as resolution climbs. At 4K, the GPU becomes the clear bottleneck. The RTX 4070’s 12 GB of GDDR6X memory and 504.2 GB/s bandwidth are being taxed heavily, and the frame rate drops to a range where the CPU’s limitations are no longer relevant. The difference between 1440p and 4K is stark, suggesting that the jump in pixel count (from 3.7 million to 8.3 million pixels) is more than the GPU can handle while maintaining the same performance tier.

The scaling from High to Ultra settings further illustrates this point. At 1080p, the gap between High (230.9 FPS) and Ultra (186.5 FPS) is 44.4 FPS. At 4K, the same settings gap is only 16.6 FPS (81.1 vs 64.5). This compression at higher resolutions confirms that the GPU is the limiting factor at 4K, as the extra graphical work has a smaller absolute impact when the GPU is already saturated.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce RTX 4070 plays the dominant role in determining the final frame rates at higher resolutions. Its specifications—12 GB of GDDR6X memory on a 192-bit bus, delivering 504.2 GB/s of bandwidth—are sufficient for Doom’s demands at 4K, as evidenced by the playable 81.1 FPS average on High settings. The GPU’s boost clock of 2475 MHz and 29.15 TFLOPS of FP32 performance provide the raw compute power necessary to render the game’s fast-moving environments.

The GPU’s memory configuration is notable. With 12 GB of VRAM, the card does not appear to be capacity-limited at any of the tested settings, even at 4K Ultra. The performance drop from High to Ultra at 4K (from 81.1 to 64.5 FPS) is more likely due to increased shader complexity and texture filtering demands rather than running out of memory. The 504.2 GB/s bandwidth is a more probable constraint, as higher texture resolutions require more data to be streamed.

The RTX 4070’s nearest rival in the synthetic benchmark data is the AMD Radeon RX Vega 56, which scores 37507 compared to the RTX 4070’s 37283, a delta of -0.6%. This near-parity in compute benchmarks does not translate to gaming performance, as the RTX 4070’s modern architecture (Ada Lovelace) and superior feature set provide a significant advantage in a title like Doom, which was designed around Vulkan and OpenGL 4.6 support.

FAQ

Q: What is the highest average frame rate achieved with this combo?

A: The highest measured average is 312.8 FPS, achieved at 1920x1080 resolution with Low settings.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: The data suggests the CPU is the primary limiter at 1080p, as frame rates exceed 300 FPS and the gap between Low and Ultra settings (312.8 vs 186.5 FPS) is primarily driven by the GPU’s workload.

Q: How does the combo rank among all tested configurations?

A: The combination ranks 479th out of 1681 total combos, placing it in the top 28.5% of all tested systems.

Q: What is the performance difference between 1440p and 4K at High settings?

A: At 1440p High, the average is 146.5 FPS, while at 4K High it drops to 81.1 FPS, a decrease of 65.4 FPS (44.6%).

Q: Can this system handle 4K Ultra settings?

A: Yes, but with a notable performance cost. The average at 4K Ultra is 64.5 FPS, which is 16.6 FPS lower than 4K High and 22.8% below the 81.1 FPS seen at 4K High.

Q: How does the RTX 4070 compare to its closest rival in synthetic benchmarks?

A: The RTX 4070 scores 37283, which is 0.6% lower than the AMD Radeon RX Vega 56’s score of 37507, indicating near-parity in raw compute tests.

Settings Recommendations

The measured data provides a clear hierarchy for optimizing the experience. For players targeting the highest possible refresh rates at 1080p, the Low preset at 312.8 FPS is the only option that breaks the 300 FPS barrier, but it sacrifices visual fidelity. The Medium preset at 271.9 FPS offers a better balance, providing a 59.0 FPS improvement over High (230.9 FPS) while still maintaining high frame rates.

At 1440p, the Medium preset delivers 175.8 FPS, which is a 29.3 FPS improvement over High (146.5 FPS) and only 26.6 FPS less than Low (202.4 FPS). This makes Medium the recommended preset for 1440p, as it offers a significant visual upgrade over Low without the substantial frame rate penalty seen at High or Ultra.

For 4K gaming, the decision is more nuanced. The High preset at 81.1 FPS is the sweet spot, providing a smooth experience above the 60 FPS threshold. The Ultra preset at 64.5 FPS is playable, but the 16.6 FPS drop from High is a significant cost for marginal visual gains. The Medium preset at 94.7 FPS is the best choice for players who prioritize frame rate over visual detail, as it is 13.6 FPS faster than High while still offering a substantial improvement over Low settings.

The data indicates that the Medium preset offers the best overall experience across all resolutions, consistently providing a frame rate that is closer to Low than to High while delivering better visual quality.

How This Combo Ranks

The AMD Ryzen 5 8400F and NVIDIA GeForce RTX 4070 combination ranks 479th out of 1681 tested combos, placing it in the 72nd percentile of all systems. This is a strong result, indicating that the pairing is well-balanced and capable of delivering high frame rates across a range of workloads.

The CPU itself, the Ryzen 5 8400F, holds the 82nd percentile among all CPUs, with an average benchmark score of 25064. Its nearest rivals are the AMD Ryzen 7 2700X (25057, 0% delta) and the AMD Ryzen AI 5 PRO 340 (25099, -0.1% delta). This shows the 8400F is competitive with older high-end chips and newer mid-range offerings, but it is not a top-tier processor.

The GPU, the RTX 4070, is in the 81st percentile of all GPUs, with an average benchmark score of 37283. Its closest rival in the data is the AMD Radeon RX Vega 56, which scores 37507 (a -0.6% delta). This places the RTX 4070 in a solid mid-to-high-end position, but it is not the fastest card available.

The fact that the combo ranks in the 72nd percentile, while both the CPU and GPU are in the low 80s percentile, suggests that the pairing is slightly less efficient than its individual components might suggest. This is likely due to the CPU becoming a bottleneck at lower resolutions, preventing the GPU from reaching its full potential in certain scenarios.

Measured FPS Breakdown

The following are the exact measured average frame rates for the AMD Ryzen 5 8400F and NVIDIA GeForce RTX 4070 combination in Doom.

1920x1080:

• Low: 312.8 FPS
• Medium: 271.9 FPS
• High: 230.9 FPS
• Ultra: 186.5 FPS

2560x1440:

• Low: 202.4 FPS
• Medium: 175.8 FPS
• High: 146.5 FPS
• Ultra: 122.7 FPS

3840x2160:

• Low: 111 FPS
• Medium: 94.7 FPS
• High: 81.1 FPS
• Ultra: 64.5 FPS

The data shows a consistent pattern: at every resolution, the Low preset provides the highest frame rate, and the Ultra preset provides the lowest. The relative performance drop from Low to Ultra is larger at 1080p (40.4% reduction) than at 4K (41.9% reduction), but the absolute FPS loss is much greater at lower resolutions. This reinforces the conclusion that the CPU is the limiting factor at 1080p, while the GPU dominates the performance picture at 4K.