Doom

The AMD Ryzen 7 7800X3D and NVIDIA GeForce RTX 4080 combination delivers exceptional performance in Doom, placing in the top 7% of all tested system configurations for this title. The data shows a system that is overwhelmingly GPU-bound at higher resolutions, with the CPU's substantial 3D V-Cache providing a robust foundation for the game's demanding frame delivery.

Resolution Scaling

The measured FPS data reveals a clear and predictable scaling pattern as resolution increases, with the RTX 4080 becoming the dominant performance limiter at 4K. At 1080p with High settings, the system produces 295 FPS. Moving to 1440p drops this to 191 FPS, a reduction of 104 FPS (35.2%). The jump to 4K High yields 104 FPS, which is a further drop of 87 FPS (45.5%) from 1440p. This steep decline demonstrates that the GPU is being saturated by the increasing pixel workload.

The scaling from 1080p to 4K on Low settings is even more pronounced. The system achieves 394 FPS at 1080p Low, falls to 260 FPS at 1440p Low, and bottoms out at 141 FPS at 4K Low. This represents a 64.1% reduction in frame rate from 1080p to 4K, underscoring that even at the lowest graphical preset, the RTX 4080's rendering throughput is the primary constraint. The 4K Low result of 141 FPS is still exceptionally high, but the relative performance loss is significant.

The pattern indicates that at 1080p, the system is partially CPU-limited, as the 394 FPS Low result approaches the practical ceiling for the Ryzen 7 7800X3D's single-threaded capabilities. However, by 1440p and especially 4K, the GPU is unequivocally the limiting component. The delta between Low and Ultra settings at each resolution provides further evidence: at 1080p, the gap is 153 FPS (394 vs 241), while at 4K, the gap narrows to 56 FPS (141 vs 85), confirming that the GPU's fill-rate and shading capacity are the determining factors at higher resolutions.

CPU Role

The AMD Ryzen 7 7800X3D is an 8-core, 16-thread processor based on the Zen 4 architecture, codenamed Raphael, and manufactured on a 5 nm process at TSMC. Its base clock is 4.20 GHz with a boost clock of 5.00 GHz. The processor features a substantial 96 MB of shared L3 cache, which is critical for gaming workloads that rely on large datasets. The benchmark results show strong multi-threaded performance, with a Cinebench R23 multi-core score of 16817 and a single-core score of 1713. The 3DMark multi-threaded tests show a score of 7980 for 16 threads, which scales effectively from the 2-thread score of 1887.

In Doom, the CPU's role is to feed the GPU with enough draw calls and physics calculations to maintain high frame rates. The data suggests the 7800X3D is more than adequate, as the system's performance at 1080p Low (394 FPS) is likely near the engine's rendering ceiling. The processor's 16 threads are not fully taxed by this title, but the large L3 cache helps with the game's data streaming. The CPU's percentile ranking of 83rd among all processors, with an average benchmark score of 33079, places it in the upper echelon, though the nearest rivals like the AMD Ryzen 7 8700G and Intel Core i7-13650HX show nearly identical average scores (33089, deltaPct 0), indicating that the 7800X3D does not have a significant synthetic benchmark lead.

The boost clock of 5.00 GHz is a key asset for Doom's single-threaded workloads, as the game's engine often relies on a primary thread for scene management. The Cinebench R23 single-core score of 1713 confirms this capability. The CPU's memory bandwidth of 83.2 GB/s, paired with its dual-channel DDR5 support, ensures that data can be fed to the cores without bottlenecking the GPU. In practice, the 7800X3D prevents any CPU-related frame pacing issues, allowing the RTX 4080 to operate at its full potential.

Settings Recommendations

The measured FPS rows provide a clear hierarchy of settings for different target frame rates and resolutions. At 1080p, the Ultra preset delivers 241 FPS, while dropping to Medium yields 350 FPS, and Low pushes to 394 FPS. Given that even Ultra produces a frame rate well above the refresh rate of typical 144Hz monitors, the Ultra preset is the recommended choice for 1080p users seeking maximum visual fidelity without sacrificing smoothness. The High preset at 295 FPS is a balanced option, but the visual gains from Ultra are likely worth the 54 FPS reduction.

At 1440p, the High preset delivers 191 FPS, which is an excellent target for high-refresh-rate monitors. The Medium preset reaches 226 FPS, offering a 35 FPS advantage over High, but the visual quality reduction may be noticeable. The Ultra preset at 156 FPS is still highly playable and provides the best image quality, though it is 35 FPS slower than High. For competitive play, Medium offers the best balance of speed and visuals, but for a cinematic experience, High is the sweet spot. The data shows that the system has enough headroom to run 1440p High comfortably.

At 4K, the High preset produces 104 FPS, which is a solid result for a 60-120Hz display. The Ultra preset drops to 85 FPS, which is still playable but may not be ideal for fast-paced action. The Medium preset at 123 FPS offers a significant 19 FPS improvement over High, making it the recommended choice for 4K users who prioritize frame rate. The Low preset at 141 FPS is the fastest option but sacrifices too much visual quality for a game like Doom. The analysis indicates that High is the best overall preset for 4K, balancing visual fidelity with a frame rate that exceeds the standard 60 FPS target.

FAQ

Q: What is the maximum average FPS achievable at 1080p with this hardware?

A: The highest measured average FPS at 1080p is 394, achieved with the Low preset. The Ultra preset yields 241 FPS, showing a significant range of performance based on settings.

Q: How does the RTX 4080 compare to its closest rival in synthetic benchmarks?

A: The RTX 4080's average benchmark score is 54247, which is 0.1% higher than the NVIDIA GeForce RTX 4080 SUPER (54209). It falls 1.1% behind the AMD Radeon Pro W5700X (54828) and 2.6% behind the AMD Radeon RX 6750 GRE 12 GB (55698).

Q: Is the Ryzen 7 7800X3D a bottleneck at 4K resolution?

A: No. At 4K, the frame rate drops from 141 FPS on Low to 85 FPS on Ultra, a pattern that is characteristic of GPU limitation. The CPU's strong single-core score of 1713 in Cinebench R23 and its 96 MB L3 cache ensure it can keep pace with the GPU's rendering demands.

Q: What is the frame rate difference between Medium and High settings at 1440p?

A: The Medium preset achieves 226 FPS, while the High preset achieves 191 FPS. This represents a 35 FPS difference (18.3% faster on Medium), making Medium the better choice for higher refresh rates.

Q: What is the launch MSRP for the CPU and GPU in this configuration?

A: The AMD Ryzen 7 7800X3D has a launch MSRP of $449, and the NVIDIA GeForce RTX 4080 has a launch MSRP of 1,199 USD.

Q: How does the system's 4K Ultra performance compare to its 1080p Ultra performance?

A: At 4K Ultra, the system achieves 85 FPS, while at 1080p Ultra, it achieves 241 FPS. This is a 64.7% reduction in frame rate, illustrating the substantial impact of resolution on the GPU workload.

GPU Role

The NVIDIA GeForce RTX 4080 is the primary performance driver in this system, especially at higher resolutions. Based on the Ada Lovelace architecture and manufactured on a 5 nm process, the GPU features 9728 shading units, 304 texture mapping units, and 112 raster output pipelines. Its boost clock of 2505 MHz, paired with 16 GB of GDDR6X memory on a 256-bit bus, provides a memory bandwidth of 716.8 GB/s. This memory configuration is crucial for Doom's texture-heavy environments, ensuring that high-resolution assets can be streamed without stuttering.

The GPU's benchmark scores are impressive, with a PassMark G3D score of 34457 and a Geekbench Vulkan score of 263779. Its percentile ranking of 86th among all GPUs, with an average benchmark score of 54247, places it near the top of the performance chart. The nearest rival, the RTX 4080 SUPER, has a deltaPct of 0.1%, making them virtually identical in synthetic performance. The GPU's FP32 performance of 48.74 TFLOPS indicates its raw compute capability, which translates directly to high fill rates in Doom.

The measured FPS data shows the GPU's scaling with settings. At 4K, the difference between Low (141 FPS) and Ultra (85 FPS) is 56 FPS, demonstrating the impact of shader complexity and texture filtering. The GPU's pixel rate of 280.6 GPixel/s and texture rate of 761.5 GTexel/s are the key metrics that determine how well it handles increasing resolution and detail levels. The data confirms that the RTX 4080 is not the limiting factor at 1080p, but it becomes the definitive bottleneck at 4K, where its performance aligns with the measured frame rates.

Measured FPS Breakdown

The full set of measured FPS data provides a comprehensive view of the system's performance across all combinations of resolution and settings. At 1920x1080, the Low preset delivers an average of 394 FPS, Medium 350 FPS, High 295 FPS, and Ultra 241 FPS. The Medium preset also has recorded minimum and maximum values of 297 and 402 FPS, respectively, indicating a stable frame delivery. The spread between Low and Ultra is 153 FPS, showing that the settings have a substantial impact at this resolution.

At 2560x1440, the Low preset averages 260 FPS, Medium 226 FPS, High 191 FPS, and Ultra 156 FPS. The Medium preset's minimum and maximum are 192 and 260 FPS, respectively, which mirrors the 1080p pattern of consistent performance. The difference between Low and Ultra here is 104 FPS, which is a smaller absolute gap than at 1080p but still significant. The High preset's 191 FPS is a notable 35 FPS lower than Medium, suggesting a significant increase in rendering complexity at that setting level.

At 3840x2160, the Low preset averages 141 FPS, Medium 123 FPS, High 104 FPS, and Ultra 85 FPS. The Medium preset shows minimum and maximum values of 104 and 141 FPS, which are identical to the High and Low averages, respectively. This indicates that the Medium preset at 4K is effectively a blend of the lower and higher settings in terms of performance. The Ultra preset's 85 FPS is the lowest measured average in the entire dataset, but it remains above the standard 60 FPS threshold. The data shows a consistent pattern: each step from Low to Ultra results in a roughly 18-20% reduction in frame rate at 4K, confirming the GPU's role as the primary performance limiter.