Doom

The AMD Ryzen 7 7800X3D paired with the AMD Radeon RX 7600 XT presents a compelling study in 1080p and 1440p gaming, but the data reveals a clear shift in bottleneck behavior as resolution climbs. For a 2016 FPS title like Doom, this combination delivers high frame rates across the board, yet the gap between low and ultra settings tells a story about where the graphics card’s limits truly lie.

Resolution Scaling

The measured FPS data shows a predictable but steep decline as resolution increases, which strongly indicates that the RX 7600 XT becomes the limiting component at higher pixel counts. At 1080p with Low settings, the combo produces 203.1 FPS, but dropping to 1440p Low reduces that to 127.7 FPS, and at 4K Low it falls further to 68.5 FPS. The scaling from 1080p to 4K at Low settings represents a 66% reduction in average frame rate, which is a massive hit that cannot be attributed to the CPU given its 8-core, 16-thread configuration with a 5.00 GHz boost clock.

When examining the Ultra preset, the pattern becomes even more pronounced. The 1080p Ultra result of 122.1 FPS drops to 76.3 FPS at 1440p and then plummets to 39.4 FPS at 4K. That 4K Ultra figure is barely playable, and the fact that it sits 68% below the 1080p Ultra score suggests the GPU’s 16 GB of VRAM and 288.0 GB/s bandwidth are being saturated by the combination of high resolution and maximum settings. The 128-bit memory bus width is likely a contributing factor here, as the data shows the card struggling to maintain even 50 FPS at 4K High (50.2 FPS).

Interestingly, the delta between Low and Ultra at each resolution grows as resolution increases. At 1080p, the spread is 81 FPS (203.1 vs 122.1), at 1440p it narrows to 51.4 FPS (127.7 vs 76.3), and at 4K it shrinks to 29.1 FPS (68.5 vs 39.4). This compression of the settings gap at higher resolutions is a classic sign that the GPU is becoming the primary constraint, as the CPU has ample headroom to feed frames but the renderer cannot keep up with the pixel workload.

FAQ

Q: What is the best resolution to play Doom with this combo?

A: The 1440p High preset offers the best balance, delivering 95.4 FPS, which is well above the 60 FPS threshold while maintaining visual fidelity. 4K is only viable at Low settings (68.5 FPS), but even that result is below what most players would consider smooth for an FPS.

Q: How much faster is 1080p compared to 1440p at the same settings?

A: At High settings, 1080p delivers 147.2 FPS versus 95.4 FPS at 1440p, representing a 54% improvement. For Low settings, the difference is 203.1 FPS versus 127.7 FPS, a 59% gain in favor of 1080p.

Q: Does the Ultra preset ever become playable at 4K?

A: No. The 4K Ultra result of 39.4 FPS falls well below the 60 FPS standard for competitive play. Even 4K Medium, at 64.1 FPS, barely crosses that threshold, and 4K High sits at 50.2 FPS.

Q: How does the CPU’s 3DMark performance relate to gaming results?

A: The 7800X3D scores 7,980 in the 16-thread test and 7,967 in max-thread testing, showing near-perfect scaling across threads. This indicates the CPU is not a bottleneck in Doom, as even the weakest 4K result (39.4 FPS) is well above the frame rates where CPU limitations typically appear.

Q: What is the frame rate difference between Low and Ultra at 1080p?

A: The gap is substantial: 203.1 FPS for Low versus 122.1 FPS for Ultra, a 66% performance penalty for maximum visual quality. This suggests the GPU is handling the extra shading work, but the CPU still has plenty of headroom.

Q: Is the RX 7600 XT better or worse than its closest rival in synthetic tests?

A: The RX 7600 XT’s average benchmark score of 20,146 is 0.6% lower than the RX 7600’s 20,258, but it is 1.9% higher than the RTX 2060 SUPER’s 19,774. The performance delta is minimal, suggesting they are functionally equivalent in raw compute.

How This Combo Ranks

The combination of the Ryzen 7 7800X3D and RX 7600 XT ranks 1,087 out of 1,681 tested combos in Doom, placing it in the 35th percentile of all pairings. This is a surprisingly low ranking for a setup that produces over 200 FPS at 1080p Low, which suggests that many other combinations in the database achieve even higher frame rates, likely due to more powerful GPUs. The rank reflects the GPU’s position in the overall hierarchy, as the RX 7600 XT sits at the 63rd percentile among all GPUs, while the CPU is at the 87th percentile among all CPUs.

The delta between the CPU’s high percentile and the GPU’s mid-range percentile explains the combo’s middling rank. The data shows that the 7800X3D is capable of far more performance, but the RX 7600 XT holds the system back in this title. When compared to the GPU’s nearest rivals, the RX 7600 XT is nearly identical to the RX 7600 (0.6% slower) and the RX 460 (0.3% faster), but the RTX 2060 SUPER is 1.9% slower. This tight clustering suggests that any of these GPUs would produce similar results in Doom, making the combo’s rank more dependent on the CPU pairing than the GPU choice.

Measured FPS Breakdown

At 1920x1080, the measured results show a clear hierarchy across settings. Low settings produce 203.1 FPS, which is the highest score in the entire dataset. Medium settings drop to 175.2 FPS, High settings reduce further to 147.2 FPS, and Ultra settings bottom out at 122.1 FPS. All four settings at 1080p exceed 120 FPS, making this resolution ideal for high-refresh-rate monitors.

Moving to 2560x1440, the performance degrades noticeably. Low settings yield 127.7 FPS, Medium produces 112.8 FPS, High delivers 95.4 FPS, and Ultra drops to 76.3 FPS. The 1440p results show that even the lowest settings maintain a playable frame rate, but the Ultra preset falls below 80 FPS, which may be noticeable on 144Hz displays.

At 3840x2160, the picture changes dramatically. Low settings produce 68.5 FPS, Medium achieves 64.1 FPS, High drops to 50.2 FPS, and Ultra falls to 39.4 FPS. Only the Low and Medium presets manage to stay above 60 FPS at 4K, and even those results are borderline. The 4K data strongly suggests that this GPU is not designed for 4K gaming at high settings, despite its 16 GB VRAM allocation.

CPU Role

The Ryzen 7 7800X3D features 8 cores and 16 threads based on the Zen 4 architecture, with a base clock of 4.20 GHz and a boost clock of 5.00 GHz. Its 96 MB of shared L3 cache is a standout feature, and the 3DMark scores confirm strong multi-threaded performance: 7,980 in 16-thread tests, 7,967 in max-thread tests, and 6,539 in 8-thread tests. The single-thread score of 959 is modest, but the multi-thread scaling suggests the CPU can handle heavy workloads without issue.

In Doom, the CPU’s role appears to be secondary, as the frame rates at 1080p Low (203.1 FPS) indicate the processor is not limiting performance. The 3DMark 2-thread score of 1,887 and 4-thread score of 3,684 suggest that even older games with limited thread utilization would run smoothly. The Cinebench R23 multicore result of 29,149 and single-core of 4,115 further reinforce that this CPU has ample headroom for gaming workloads. The 120 TDP and 5 nm process node indicate efficient operation, and the DDR5 memory support with 83.2 GB/s bandwidth ensures the CPU can feed data to the GPU without starvation.

Settings Recommendations

The measured data suggests that 1080p High (147.2 FPS) is the optimal choice for competitive play, as it provides a significant visual upgrade over Low (203.1 FPS) while maintaining frame rates well above 144 Hz. For 1440p users, the Medium preset (112.8 FPS) offers the best experience, balancing visual quality with performance that stays above 100 FPS. The 1440p High preset at 95.4 FPS is also viable if the user prefers higher fidelity and can tolerate slightly lower frame rates.

At 4K, the recommendations become more constrained. The Low preset (68.5 FPS) is the only setting that provides a comfortable margin above 60 FPS, while Medium (64.1 FPS) is borderline. The High preset at 50.2 FPS and Ultra at 39.4 FPS should be avoided for serious play, as the frame rates would be noticeable in a fast-paced FPS. For users with 4K displays, the data implies that dropping to 1440p Medium or High would provide a much better experience than compromising settings at the native resolution.

GPU Role

The Radeon RX 7600 XT is built on the RDNA 3.0 architecture with the Navi 33 chip, featuring 2,048 shading units, 128 TMUs, and 64 ROPs. Its boost clock reaches 2,755 MHz, with a game clock of 2,470 MHz, and the 16 GB of GDDR6 memory operates at 18 Gbps effective on a 128-bit bus, yielding 288.0 GB/s of bandwidth. The 22.57 TFLOPS of FP32 performance and 176.3 GPixel/s pixel rate provide solid raw compute for 1080p and 1440p gaming.

The GPU’s benchmark scores show a mixed picture. The Passmark G3D score of 17,132 and Geekbench OpenCL score of 83,114 indicate competent DirectX performance, but the DirectX 12 score of 65 and DirectX 11 score of 167 in Passmark are relatively low compared to other metrics. This suggests that the card’s performance varies significantly depending on the API and workload. In Doom, which uses an older engine, the GPU’s Vulkan 1.4 and DirectX 12 Ultimate support should be adequate, but the 4K results indicate that the 128-bit memory bus becomes a bottleneck at higher resolutions.

The VRAM capacity of 16 GB is generous for a mid-range card, but the bandwidth of 288.0 GB/s appears to be the limiting factor at 4K. The 4K Ultra result of 39.4 FPS versus the 1080p Ultra of 122.1 FPS shows a 68% performance drop, which correlates with the increased memory pressure at higher resolutions. The GPU’s percentile ranking of 63 among all GPUs places it in the upper mid-range, and its average benchmark score of 20,146 is close to its nearest rivals, suggesting that this card is best suited for 1080p and 1440p gaming rather than 4K.