Doom

The AMD Ryzen 5 8400F and NVIDIA GeForce RTX 4070 SUPER combination delivers a high-refresh-rate experience in Doom, with the data showing a clear shift from CPU to GPU limitation as resolution scales. This analysis breaks down the measured performance across the three tested resolutions and four settings presets.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture, built on a 4 nm process at TSMC. It operates with a base clock of 4.20 GHz and a boost clock of 4.70 GHz, with a 65 W TDP. The processor features a 16 MB shared L3 cache, alongside 64 KB of L1 and 1 MB of L2 cache per core. It supports DDR5 memory over a dual-channel bus, providing a memory bandwidth of 83.2 GB/s.

In synthetic benchmarks, the 8400F scores 2,943 in Cinebench R23 single-core and 20,851 in multi-core. Its PassMark single-thread score is 3,685, while the multithread score is 24,389. The processor’s average benchmark score is 25,005, placing it at the 77th percentile among all CPUs tested. Its nearest rivals, based on average score, include the AMD Ryzen 5 7500F (24,964, +0.2%), Intel Core i7-11850H (24,935, +0.3%), and Intel Core i7-13620H (24,911, +0.4%). The 8400F sits slightly above these in average score.

The relevance of these CPU figures to Doom’s results is most apparent at 1080p, where frame rates are extremely high. At 1080p Low, the combo achieves an average of 349 FPS. At this level, the CPU’s single-thread performance, as indicated by the Cinebench R23 single-core score of 2,943, becomes a more significant factor in maintaining high frame rates. The 4.70 GHz boost clock and the architecture’s efficiency allow it to feed the GPU at these elevated rates. The 12 threads and multi-core score of 20,851 are less critical for Doom, which is not a heavily threaded title, but they ensure no CPU bottleneck emerges in less demanding scenes. The data indicates that the 8400F provides sufficient headroom to avoid holding back the RTX 4070 SUPER at 1080p, but it is not the primary driver of frame rates at higher resolutions.

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

The NVIDIA GeForce RTX 4070 SUPER is based on the Ada Lovelace architecture, using the AD104 chip fabricated on a 5 nm process at TSMC. It features 7,168 shading units, 224 texture mapping units, and 80 raster output pipelines. The GPU has 56 ray tracing cores and 224 tensor cores. It operates at a base clock of 1980 MHz and a boost clock of 2475 MHz. The memory subsystem consists of 12 GB of GDDR6X on a 192-bit bus, yielding a bandwidth of 504.2 GB/s. The card’s FP32 performance is rated at 35.48 TFLOPS.

Synthetic benchmarks for the RTX 4070 SUPER show a PassMark G3D score of 29,995 and a Geekbench Vulkan score of 205,624. Its average benchmark score is 43,223, which places it at the 83rd percentile among all GPUs. Its nearest rivals by average score are the NVIDIA Quadro M6000 24 GB (43,262, -0.1%), NVIDIA GeForce RTX 5050 Mobile (43,268, -0.1%), and NVIDIA Quadro M6000 (43,301, -0.2%). The RTX 4070 SUPER’s score is slightly lower than these, with a delta of -0.1% to -0.2% against the top two rivals.

The GPU’s role becomes dominant as resolution increases. At 4K, the frame rates drop significantly compared to 1080p, which points to the GPU being the limiting component. The 12 GB of VRAM and 504.2 GB/s of bandwidth are sufficient for Doom at all tested settings, as the game is not VRAM-hungry. The boost clock of 2475 MHz and the high FP32 throughput are the primary drivers of performance at 1440p and 4K. The data shows that at 4K Ultra, the average FPS drops to 74, a figure that is clearly constrained by the GPU’s ability to render the increased pixel count, rather than the CPU’s processing power.

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

The measured FPS data shows a clear pattern of performance degradation as resolution increases, which indicates the system transitions from a balanced state to a GPU-bound state. At 1080p, the average FPS across all settings is very high, ranging from 210 FPS at Ultra to 349 FPS at Low. When moving to 1440p, the average FPS drops by roughly 35% to 40% across all settings. For example, at High settings, the FPS drops from 257 at 1080p to 166 at 1440p, a decrease of 91 FPS. At 4K, the drop is even more pronounced. At High settings, the FPS falls from 166 at 1440p to 90 at 4K, a further reduction of 76 FPS.

This scaling behavior is typical of a GPU-limited scenario at higher resolutions. The percentage drop from 1080p to 4K at High settings is about 65% (from 257 to 90 FPS). At Low settings, the drop is from 349 to 123 FPS, which is a 65% reduction as well. The consistency of this percentage drop across settings suggests that the GPU’s fill rate and memory bandwidth are the primary constraints at 4K. The CPU’s role is more pronounced at 1080p, where the frame rates approach and exceed 300 FPS, but even at 4K Low, the system maintains 123 FPS, which is still well above the 60 FPS threshold. The data strongly suggests that if a user wants to push for higher frame rates at 4K, the GPU is the component that would need to be upgraded, as the CPU has already demonstrated it can handle the lower-resolution load.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data provides a comprehensive view of performance across three resolutions and four settings presets. At 1920x1080, the average FPS values are as follows: Low settings yield 349 FPS, Medium settings yield 304 FPS (with a min of 259 and max of 350), High settings yield 257 FPS, and Ultra settings yield 210 FPS. The spread between Low and Ultra is 139 FPS, which indicates the GPU is not the sole bottleneck at this resolution, as the settings change has a substantial impact.

At 2560x1440, the average FPS values are: Low settings yield 226 FPS, Medium settings yield 197 FPS (with a min of 167 and max of 227), High settings yield 166 FPS, and Ultra settings yield 136 FPS. The drop from 1080p to 1440p is consistent across settings, with an average reduction of about 40%. The min FPS at Medium is 167, which is still above 144 Hz, making this resolution suitable for high-refresh-rate monitors.

At 3840x2160, the average FPS values are: Low settings yield 123 FPS, Medium settings yield 107 FPS (with a min of 91 and max of 123), High settings yield 90 FPS, and Ultra settings yield 74 FPS. The drop from 1440p to 4K is again consistent, with an average reduction of about 45%. The min FPS at 4K Medium is 91, which is above 60 FPS but below 120 FPS. At 4K Ultra, the average of 74 FPS is playable but not ideal for high-refresh-rate displays. The data shows that the system is capable of 4K gaming, but users targeting 120+ FPS will need to use lower settings or accept a lower resolution.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the AMD Ryzen 5 8400F and NVIDIA GeForce RTX 4070 SUPER ranks 607th out of 3,712 tested combos in Doom. This places the combo in the top 16.4% of all tested systems. The rank is a relative measure of overall performance, taking into account both the CPU and GPU contributions. Given that the GPU is a high-end part, ranking in the 83rd percentile for GPUs, and the CPU is a mid-range part, ranking in the 77th percentile for CPUs, the combo’s overall rank is slightly lower than the GPU’s percentile but higher than the CPU’s.

This rank suggests that while the RTX 4070 SUPER is a strong performer, the 8400F does not fully complement it in every scenario. In a game like Doom, which is not heavily CPU-threaded, the CPU’s single-thread performance is adequate, but the overall rank indicates that there are many other combos that achieve higher average frame rates. The data implies that for this specific game, the GPU is the more significant contributor to the final rank, as the CPU’s performance is sufficient to avoid being a major bottleneck. The 607th rank out of 3,712 is a strong result, indicating that this combo is capable of delivering a high-quality gaming experience, but it is not at the absolute top tier of performance.

FAQ

Q: What is the average FPS at 1080p with High settings for this combo?

A: The measured average FPS at 1920x1080 with High settings is 257 FPS.

Q: How does the combo perform at 4K Ultra settings?

A: At 3840x2160 with Ultra settings, the average FPS is 74 FPS, with no reported min or max FPS values.

Q: What is the highest average FPS recorded across all tested settings?

A: The highest average FPS is 349 FPS, achieved at 1920x1080 with Low settings.

Q: Is the CPU or GPU more likely to be the limiting factor at 4K?

A: The data indicates the GPU is the limiting factor at 4K. The average FPS drops from 123 at Low to 74 at Ultra, while the CPU’s single-thread performance is sufficient to maintain high frame rates at lower resolutions.

Q: What is the combo’s rank among all tested combos in Doom?

A: The combo ranks 607th out of 3,712 tested combos, placing it in the top 16.4% of systems.

Q: What is the minimum FPS reported at 1440p Medium settings?

A: At 2560x1440 with Medium settings, the minimum FPS is 167 FPS, with a maximum of 227 FPS.

Settings Recommendations

Based on the measured FPS data, the optimal settings preset depends on the user’s target resolution and refresh rate. For 1080p displays with a 144 Hz refresh rate, all settings presets deliver an average FPS well above 144. Even Ultra settings at 210 FPS provide a comfortable margin. For 1440p users with a 144 Hz monitor, the Medium settings preset, which yields an average of 197 FPS with a minimum of 167 FPS, is the best choice to ensure frame rates stay above the refresh rate. High settings at 166 FPS is also viable, but the minimum FPS is not reported, so Medium is safer for frame time consistency.

For 4K displays, the recommendation is more nuanced. If the display has a 60 Hz refresh rate, all settings presets are playable, with Ultra at 74 FPS and Low at 123 FPS. However, for 120 Hz displays, only the Low settings preset, with an average of 123 FPS, is guaranteed to stay above 120 FPS. Medium settings at 107 FPS will dip below 120 FPS at times, given the minimum of 91 FPS. Therefore, for a balanced experience at 4K, Low settings provide the highest frame rates, while Medium settings offer a better visual quality with only a modest FPS reduction. The data suggests that the best experience for most users is to target 1440p with Medium or High settings, as this provides a high frame rate with good visual fidelity, while 4K requires a trade-off between settings and performance.