Doom

The AMD Ryzen 5 4600G paired with the AMD Radeon RX 7800 XT delivers a remarkably smooth experience in Doom, with the data showing a clear shift in bottleneck behavior as resolution increases. At 1080p, the system is heavily CPU-limited, producing high frame rates that scale strongly with lower settings. At 4K, the GPU takes over as the primary constraint, though the frame rates remain comfortably playable across all presets.

Resolution Scaling

The measured FPS data reveals a classic scaling pattern typical of a high-refresh-rate title on capable hardware. Moving from 1920x1080 to 2560x1440, the average frame rate drops by roughly 26-33% depending on the preset. The transition from 1440p to 3840x2160 is more severe, with average FPS falling by an additional 45-50%. This steep drop-off at 4K indicates that the Radeon RX 7800 XT's rendering throughput becomes the limiting factor, whereas at 1080p the processor is the primary bottleneck.

At 1080p High settings, the system achieves 209 FPS average, but at 4K High it falls to 73 FPS. This 136 FPS difference represents a 65% reduction in performance, which is substantial but still leaves the game well within playable territory. The scaling pattern suggests that the RX 7800 XT has enough headroom at lower resolutions to be held back by the CPU, while at 4K the GPU's pixel-pushing capabilities are fully taxed.

The gap between Low and Ultra settings at each resolution provides further insight. At 1080p, the spread is 106 FPS (277 FPS at Low versus 171 FPS at Ultra), which is a 38% performance penalty for maxing out the graphics. At 4K, the spread narrows to 39 FPS (99 FPS at Low versus 60 FPS at Ultra), a 39% penalty. This consistent relative penalty suggests that the GPU is doing proportionally similar work across resolutions, but the absolute impact is more noticeable at lower frame rates.

GPU Role

The AMD Radeon RX 7800 XT is built on the RDNA 3.0 architecture with a Navi 32 chip manufactured on a 5 nm process by TSMC. It carries 16 GB of GDDR6 memory on a 256-bit bus, providing 624.1 GB/s of bandwidth. The GPU operates with a base clock of 1295 MHz, a game clock of 2124 MHz, and a boost clock of 2430 MHz. These specifications position it as a high-end card, though the benchmark percentile ranking of 51 against all GPUs suggests its average benchmark score of 11627 is moderate relative to the broader GPU landscape.

In Doom, the GPU's role becomes increasingly dominant as resolution rises. At 4K Ultra, the card manages 60 FPS average, which is exactly at the threshold for smooth gameplay in this title. The fact that 4K Medium yields 87 FPS and 4K Low reaches 99 FPS demonstrates that the card has significant headroom when texture and shading demands are reduced. The 16 GB VRAM allocation is more than sufficient for this game, as Doom from 2016 does not require massive memory pools even at 4K.

The GPU's memory bandwidth of 624.1 GB/s is a key asset for high-resolution rendering. The data shows that at 4K, the frame rate drops by roughly 14% when moving from Medium to High settings (87 to 73 FPS), and by another 18% when moving from High to Ultra (73 to 60 FPS). This progressive decline indicates that the card's compute units and memory subsystem are being progressively saturated, rather than hitting a single hard limit.

CPU Role

The AMD Ryzen 5 4600G is a 6-core, 12-thread processor based on the Zen 2 architecture with the Renoir codename. It runs at a base clock of 3.70 GHz with a boost clock of 4.20 GHz, and features 8 MB of shared L3 cache. The processor has a 65 W TDP and supports DDR4 memory in dual-channel configuration with 51.2 GB/s bandwidth. Its benchmark scores show a single-thread performance of 726 in 3DMark and 1919 in Cinebench R23, with multi-thread scores of 4889 and 13593 respectively.

In Doom, the CPU's influence is most apparent at 1080p, where the frame rates are exceptionally high. The 277 FPS average at Low settings and 209 FPS at High settings indicate that the processor is capable of feeding the GPU with enough draw calls to sustain these rates. However, the data also shows that the CPU is the limiting factor at this resolution, as the GPU could likely render even more frames if the processor could keep up.

At 1440p, the CPU's role diminishes somewhat, but it still contributes to the overall frame pacing. The 184 FPS at Low settings suggests that the processor still has headroom, but the GPU is starting to become more involved in determining the final output. By 4K, the CPU is no longer the bottleneck, as the frame rates are entirely dictated by the GPU's rendering capabilities.

The processor's 12 threads are well-suited for Doom's multi-threaded engine, though the game's primary thread is likely still the main constraint at high frame rates. The 3DMark 16-thread score of 4863 and Passmark multi-thread score of 15992 indicate solid multi-threading capabilities, but the single-thread score of 726 in 3DMark reveals that individual core performance is more modest, which is typical for a 4000-series APU.

Measured FPS Breakdown

The measured FPS data covers three resolutions and four settings presets, providing a comprehensive view of performance. At 1920x1080, the system delivers 277 FPS at Low, 247 FPS at Medium, 209 FPS at High, and 171 FPS at Ultra. The Medium preset shows a minimum of 210 FPS and a maximum of 284 FPS, indicating excellent frame consistency with only a 74 FPS spread between the slowest and fastest frames.

At 2560x1440, the averages are 184 FPS at Low, 160 FPS at Medium, 135 FPS at High, and 110 FPS at Ultra. The Medium preset again provides min/max data, showing 136 FPS minimum and 184 FPS maximum, which represents a 48 FPS spread. This tighter range suggests that the GPU is becoming more consistent as resolution increases, with fewer CPU-induced frame spikes.

At 3840x2160, the system achieves 99 FPS at Low, 87 FPS at Medium, 73 FPS at High, and 60 FPS at Ultra. The Medium preset shows a minimum of 74 FPS and a maximum of 100 FPS, which is a 26 FPS spread. This narrowing range at 4K indicates that the GPU's workload is more uniform, with the frame rate being determined primarily by the consistent rendering demands rather than variable CPU input.

The data shows a smooth progression across settings at each resolution. At 1080p, moving from Low to Medium costs 30 FPS, from Medium to High costs 38 FPS, and from High to Ultra costs another 38 FPS. This suggests that each settings tier imposes a similar relative cost, with Ultra being the most demanding. At 4K, the pattern is similar but with smaller absolute differences: Low to Medium costs 12 FPS, Medium to High costs 14 FPS, and High to Ultra costs 13 FPS.

How This Combo Ranks

The combination of the AMD Ryzen 5 4600G and AMD Radeon RX 7800 XT ranks 1277 out of 3712 tested combos in Doom. This places it in the upper third of all combinations tested, which is a strong showing given the processor's modest single-thread performance. The ranking reflects the GPU's ability to carry high-resolution performance while the CPU ensures adequate frame rates at lower resolutions.

The CPU's nearest rivals provide context for its performance tier. The AMD Ryzen 3 PRO 5355GE scores 17482 with a delta of 0.1% relative to the 4600G's average benchmark score of 17507, making them effectively equivalent. The Intel Core 7 150U scores 17395 with a 0.6% delta, also very close. The AMD Ryzen 3 8300GE and Intel Core i3-14100T score 17614 and 17648 respectively, with deltas of -0.6% and -0.8%, meaning they are slightly faster. This clustering suggests that the 4600G's overall CPU performance is competitive with modern lower-tier processors, though its single-thread capabilities are more limited.

The GPU's nearest rivals paint a similar picture. The NVIDIA GeForce GTX 1660 scores 11680 with a -0.5% delta relative to the RX 7800 XT's 11627 average, making them nearly identical in synthetic benchmarks. The AMD Radeon Pro 5500M scores 11528 with a 0.9% delta, and the NVIDIA Tesla K20c scores 11479 with a 1.3% delta. The AMD Radeon RX 6500 XT scores 11842 with a -1.8% delta. These close scores in the GPU benchmark database are surprising given the architectural differences, but they reflect the average benchmark suite rather than game-specific performance.

In Doom, the combo's rank of 1277 out of 3712 suggests that it outperforms a majority of tested configurations. This is largely due to the RX 7800 XT's strong rasterization performance in this Vulkan-based title, which favors AMD's RDNA architecture. The CPU's contribution is secondary but sufficient to avoid being a significant drag on the overall result.

Settings Recommendations

For the best experience on this hardware, the data points to specific settings presets at each resolution. At 1920x1080, the Low preset delivers 277 FPS, which is far beyond the refresh rate of most monitors. However, the Medium preset at 247 FPS still provides excellent smoothness while offering better visual fidelity. The High preset at 209 FPS is the sweet spot for competitive play, as it maintains high frame rates while improving image quality. Ultra at 171 FPS is still highly playable and offers the best visuals, but the 38 FPS drop from High may not be worth it for esports-focused players.

At 2560x1440, the Medium preset at 160 FPS provides the best balance of visual quality and performance. The High preset at 135 FPS is also excellent and offers improved detail, while Ultra at 110 FPS remains smooth and is recommended for single-player immersion. Low at 184 FPS is overkill for most displays and sacrifices too much visual quality for marginal gains.

At 3840x2160, the Medium preset at 87 FPS is the recommended choice, as it maintains a high frame rate while providing good visual quality. The High preset at 73 FPS is still very playable and offers better textures and effects, making it a viable option for those with 60 Hz displays. Ultra at 60 FPS is exactly at the 60 FPS threshold, making it suitable for 60 Hz monitors but not ideal for higher refresh rate displays. The Low preset at 99 FPS is the best option for maximum fluidity on 120 Hz displays, though the visual compromise is significant.

Across all resolutions, the Medium preset consistently offers the best combination of frame rate and visual quality, with the High preset being the next best alternative for those prioritizing graphics over raw speed. The Ultra preset is reserved for users with 60 Hz displays who want the absolute best image quality, while Low is only recommended for competitive play at high refresh rates where every frame counts.