Doom

The AMD Ryzen 5 7400F and AMD Radeon RX 7800 XT combination delivers exceptional performance in Doom, with the data showing a clear GPU-bound scenario at higher resolutions and a well-balanced system at 1080p. The combo ranks in the 68th percentile (925th of 2930 tested combos), indicating a strong pairing that consistently delivers high frame rates across all settings. The performance scaling from 1080p to 4K reveals a system where the GPU becomes the primary limiting factor as resolution increases, while the CPU's six Zen 4 cores provide ample headroom to keep frame rates high at lower resolutions.

Resolution Scaling

The measured FPS data shows a predictable decline as resolution increases, but the magnitude of that decline varies significantly by settings preset. At High settings, the average FPS drops from 209 at 1920x1080 to 135 at 2560x1440, a 35% reduction, and then to 73 at 3840x2160, a 46% further reduction from 1440p. This steep scaling curve indicates the RX 7800 XT's rendering throughput is the limiting factor at higher resolutions, with the GPU's 37.32 TFLOPS FP32 compute and 624.1 GB/s memory bandwidth being taxed progressively harder as pixel count rises.

At Low settings, the scaling pattern changes dramatically. The 1920x1080 result of 284 FPS drops to 184 FPS at 2560x1440 (35% reduction) and then to 99 FPS at 3840x2160 (46% reduction from 1440p). The percentage drops are nearly identical to High settings, suggesting that even at Low settings, the GPU remains the bottleneck at 4K. However, the absolute frame rates at 1080p Low (284 FPS) are so high that the CPU's 12 threads are likely approaching their limit, as evidenced by the smaller relative gap between 1080p and 1440p compared to what pure GPU scaling would predict.

The Medium settings data provides the most complete picture with min and max FPS values. At 1920x1080 Medium, the average is 247 FPS with a min of 210 and max of 284, showing tight frame pacing. At 2560x1440 Medium, the average drops to 160 FPS (min 136, max 184), and at 3840x2160 Medium it falls to 87 FPS (min 74, max 100). The min-to-max spread widens proportionally with resolution, from a 74 FPS spread at 1080p to a 26 FPS spread at 4K, indicating that frame time consistency degrades as GPU load increases.

Ultra settings show the most extreme scaling. The 1920x1080 Ultra average of 171 FPS drops to 110 FPS at 2560x1440 (36% reduction) and then to 60 FPS at 3840x2160 (45% reduction from 1440p). The 4K Ultra result of exactly 60 FPS suggests the engine's frame pacing is hitting a threshold, potentially indicating that the GPU is fully saturated. The data clearly shows that for 4K gaming, even this capable GPU cannot maintain high refresh rates at Ultra settings, while at 1080p, all settings presets exceed 170 FPS.

GPU Role

The AMD Radeon RX 7800 XT is the dominant performance driver in this Doom configuration, with its specifications directly explaining the measured results. The GPU features 16 GB of GDDR6 memory on a 256-bit bus providing 624.1 GB/s bandwidth, which is ample for Doom's texture-heavy environments even at 4K Ultra. The memory clock runs at 2438 MHz (19.5 Gbps effective), and the boost clock of 2430 MHz (game clock 2124 MHz, base 1295 MHz) allows the 3840 shading units to maintain high throughput.

The GPU's 96 ROPs deliver a pixel rate of 233.3 GPixel/s, which becomes the critical factor at 4K resolution where the render target contains 8.3 million pixels. The data supports this: at 4K Ultra, the average FPS of 60 aligns closely with what the pixel rate would suggest when accounting for the game's rendering complexity. The 240 TMUs providing 583.2 GTexel/s texture rate ensure that texture sampling never becomes a bottleneck, even at Ultra settings with high-resolution textures.

The 51st percentile ranking among all GPUs (based on average benchmark score of 11627) places the RX 7800 XT in the mid-range tier, yet the nearest rivals in the benchmark database include the NVIDIA GeForce GTX 1660 (deltaPct -0.5%), AMD Radeon Pro 5500M (deltaPct 0.9%), NVIDIA Tesla K20c (deltaPct 1.3%), and AMD Radeon RX 6500 XT (deltaPct -1.8%). These deltas are remarkably small, with all rivals within 1.8% of the RX 7800 XT's average score, suggesting that the GPU's raw compute benchmarks don't fully capture its gaming performance in Doom.

The 3DMark Steel Nomad DX12 score of 4157 and Geekbench Vulkan score of 54228 provide additional context. The Vulkan score is particularly relevant since Doom uses the Vulkan API (supported version 1.4), and the high Vulkan performance (54228) correlates with the strong frame rates observed. The DirectX 12 Ultimate (12_2) support with 60 RT cores means the GPU is future-proofed for modern rendering techniques, though Doom's 2016 release date means it primarily uses traditional rasterization.

FAQ

Q: Can this combo maintain 60 FPS at 4K Ultra settings in Doom?

A: Yes, the measured data shows exactly 60 FPS average at 3840x2160 Ultra settings, though this is precisely at the 60 FPS threshold with no headroom. For smoother gameplay, dropping to High settings at 4K improves the average to 73 FPS.

Q: How does the RX 7800 XT compare to its nearest rivals in benchmark scores?

A: The RX 7800 XT has an average benchmark score of 11627, placing it 0.5% below the NVIDIA GeForce GTX 1660 (11680), 0.9% above the AMD Radeon Pro 5500M (11528), 1.3% above the NVIDIA Tesla K20c (11479), and 1.8% below the AMD Radeon RX 6500 XT (11842). All rivals are within a tight 1.8% band.

Q: What is the best settings preset for 1440p gaming with this combo?

A: At 2560x1440, the Medium preset delivers 160 FPS average (min 136, max 184), while High achieves 135 FPS and Ultra drops to 110 FPS. For high refresh rate monitors, Medium provides the best balance of visual quality and frame rate headroom.

Q: Does the CPU bottleneck the GPU at 1080p?

A: The data suggests the Ryzen 5 7400F (6 cores, 12 threads, boost 4.70 GHz) keeps pace with the GPU at 1080p, as frame rates scale consistently from Low (284 FPS) to Ultra (171 FPS). The CPU's Cinebench R23 multi-core score of 21765 and single-core score of 3072 indicate sufficient processing power for Doom's engine.

Q: How much performance is lost when going from 1080p to 4K at High settings?

A: The average FPS drops from 209 at 1920x1080 High to 73 at 3840x2160 High, representing a 65% reduction. This confirms the GPU becomes the limiting factor at 4K, as the resolution increase demands significantly more pixel throughput.

Q: Is the 16 GB VRAM sufficient for Doom at maximum settings?

A: The 16 GB GDDR6 memory with 624.1 GB/s bandwidth is more than adequate for Doom, as evidenced by the playable 60 FPS average at 4K Ultra. The memory bandwidth and capacity do not appear to be limiting factors in any measured configuration.

Measured FPS Breakdown

At 1920x1080, the combo delivers high frame rates across all settings. Low settings produce 284 FPS average, Medium settings 247 FPS (min 210, max 284), High settings 209 FPS, and Ultra settings 171 FPS. The spread between Low and Ultra is 113 FPS, indicating that the GPU has significant headroom at this resolution and that settings have a substantial impact on performance. The Medium preset's min FPS of 210 ensures that even demanding scenes stay well above 144 Hz refresh rates.

At 2560x1440, the frame rates remain competitive for high refresh rate gaming. Low settings yield 184 FPS, Medium 160 FPS (min 136, max 184), High 135 FPS, and Ultra 110 FPS. The drop from 1080p to 1440p ranges from 35% (High) to 36% (Ultra), showing consistent scaling. The Medium preset's min FPS of 136 still exceeds 120 Hz, while Ultra's 110 FPS average provides smooth gameplay on 100 Hz displays.

At 3840x2160, the GPU's limits become apparent. Low settings produce 99 FPS, Medium 87 FPS (min 74, max 100), High 73 FPS, and Ultra 60 FPS. The scaling from 1440p to 4K shows a 46% reduction for both Low and High settings, with Medium and Ultra showing 46% and 45% reductions respectively. The 4K Ultra result of exactly 60 FPS suggests the engine or driver is capping at a 60 FPS threshold, which is notable given that other settings at 4K exceed this value.

The Medium settings data across all resolutions provides the most detailed picture of frame time consistency. At 1080p, the min-max spread is 74 FPS (210 to 284), at 1440p it is 48 FPS (136 to 184), and at 4K it is 26 FPS (74 to 100). This narrowing spread at higher resolutions indicates that frame pacing becomes more consistent as the GPU becomes fully utilized, which is counterintuitive but suggests the GPU's scheduling is more efficient under full load.

How This Combo Ranks

The AMD Ryzen 5 7400F + AMD Radeon RX 7800 XT combination ranks 925th out of 2930 tested combos in Doom, placing it in the 68.4th percentile of all tested systems. This ranking reflects a strong pairing that outperforms the majority of tested configurations while not reaching the top tier. The rank of 925 indicates that roughly 2005 other combos perform worse, while 924 perform better, positioning this system in the upper-middle to upper tier of gaming performance.

The CPU's individual ranking provides context: the Ryzen 5 7400F has a percentile rank of 83 among all CPUs, with an average benchmark score of 32750. Its nearest rivals include the Intel Core i5-14600T (avgScore 32707, deltaPct 0.1%), Intel Core Ultra 7 155H (avgScore 32697, deltaPct 0.2%), AMD Ryzen 7 PRO 6850H (avgScore 32812, deltaPct -0.2%), and AMD Ryzen AI 7 PRO 360 (avgScore 32662, deltaPct 0.3%). The CPU is extremely well-matched with its rivals, all within 0.3% of each other, and its 83rd percentile ranking suggests it is a high-performing processor.

The GPU's individual ranking is notably lower at 51st percentile, with an average benchmark score of 11627. However, the combo's overall rank of 925 out of 2930 (68th percentile) is significantly better than the GPU's individual percentile, indicating that the CPU+GPU pairing achieves better gaming performance than the GPU's raw compute benchmarks would suggest. This discrepancy highlights the importance of system-level optimization and the CPU's ability to feed the GPU efficiently in Doom's engine.

The combination's performance in Doom specifically outperforms what the individual component percentiles might predict. The GPU's 51st percentile ranking would suggest mid-pack performance, but the combo achieves 68th percentile in this game, demonstrating that Doom's Vulkan implementation scales well with the RX 7800 XT's architecture. The 60 RT cores and RDNA 3.0 architecture appear to be well-suited to Doom's rendering requirements.

CPU Role

The AMD Ryzen 5 7400F plays a supporting but crucial role in this Doom configuration, providing the processing foundation that allows the RX 7800 XT to operate at full capacity. With 6 cores and 12 threads based on Zen 4 architecture (Raphael codename), the CPU runs at a base clock of 3.70 GHz and boost clock of 4.70 GHz. The 32 MB shared L3 cache and 1 MB L2 per core provide low-latency access to frequently used game data, with the 5 nm process node and 6,570 million transistors contributing to the CPU's efficient operation.

The CPU's benchmark results demonstrate its capability for gaming workloads. The Cinebench R23 multi-core score of 21765 and single-core score of 3072 indicate strong multi-threaded and single-threaded performance, with the 12 threads handling Doom's engine threads efficiently. The PassMark multithread score of 25645 and single-thread score of 3689 further confirm the CPU's balance, with the physics score of 1660 being particularly relevant for game physics calculations.

The 83rd percentile ranking among all CPUs and average benchmark score of 32750 place the Ryzen 5 7400F in a strong position. Its nearest rivals include the Intel Core i5-14600T (deltaPct 0.1%), Intel Core Ultra 7 155H (deltaPct 0.2%), AMD Ryzen 7 PRO 6850H (deltaPct -0.2%), and AMD Ryzen AI 7 PRO 360 (deltaPct 0.3%). The extremely tight deltas (all within 0.3%) indicate that the 7400F is positioned in a highly competitive CPU segment, with performance nearly identical to its closest competitors.

In Doom specifically, the CPU's role is to maintain frame rates at higher settings where the GPU is less saturated. The data shows that at 1080p, the CPU can sustain frame rates up to 284 FPS at Low settings, indicating that the 12 threads are sufficient to keep up with the GPU's output at this resolution. The fact that frame rates scale consistently from 1080p to 4K suggests the CPU is not a bottleneck at any tested configuration, with the GPU being the primary limiter at higher resolutions.

The CPU's memory support for DDR5 with dual-channel configuration and 83.2 GB/s bandwidth ensures that game data can be fed to the CPU and GPU without memory bandwidth constraints. The PCIe Gen 5 interface with 24 lanes provides high-bandwidth connectivity to the GPU, though the RX 7800 XT uses PCIe 4.0 x16, which is more than sufficient for Doom's data transfer requirements. The 65W TDP indicates efficient power consumption, allowing sustained boost clocks during extended gaming sessions without thermal throttling.