Doom

Resolution Scaling

The measured frame rates for Doom with the AMD Ryzen 5 7600X and AMD Radeon RX 7900 XTX show a clear progression as resolution increases, but the shape of that curve reveals where the bottleneck sits. At 1920x1080 with High settings, the combo delivers 265.4 FPS average. Moving to 2560x1440 drops that to 175.4 FPS, a reduction of roughly 34%. At 3840x2160, the average falls to 91.8 FPS, which is about 65% below the 1080p figure. This is a steep decline, but it is not uniform across all settings presets.

The Low settings preset tells a different story. At 1080p Low, the system reaches 364.9 FPS. At 1440p Low, it drops to 233.2 FPS, and at 4K Low, it settles at 124.5 FPS. The gap between Low and Ultra narrows as resolution climbs. At 1080p, the difference between Low and Ultra is 146.9 FPS (364.9 versus 218.0). At 4K, that same gap shrinks to 45.7 FPS (124.5 versus 78.8). This pattern indicates that at lower resolutions, the CPU is capable of feeding the GPU far more frames than at higher resolutions, where the GPU's rendering workload becomes the dominant factor.

The 4K results are particularly telling for the limiting component. At 4K Ultra, the average is 78.8 FPS, while at 4K Low it is 124.5 FPS. That is a 45.7 FPS swing purely from lowering graphical fidelity, which strongly suggests the GPU is the primary constraint at this resolution. The RX 7900 XTX, with its 24 GB of GDDR6 memory on a 384-bit bus delivering 960.0 GB/s of bandwidth, is clearly being taxed by the Ultra preset. The data shows that 4K Ultra is the only configuration in the entire dataset that dips below the 80 FPS mark. For a game like Doom, which is known for its fast-paced action, that 78.8 FPS average is still playable, but it is the lowest headroom of any tested setting.

At 1080p, the situation reverses. The jump from Ultra (218.0 FPS) to Low (364.9 FPS) is massive, and even High (265.4 FPS) versus Medium (314.9 FPS) shows significant scaling. This suggests that at 1080p, the CPU is not the limiting factor; rather, the GPU is still able to push well beyond 200 FPS even on High settings. The Ryzen 5 7600X, with its 6 cores and 12 threads, is clearly not holding the system back at this resolution. The benchmark results indicate that the CPU's single-thread performance, as evidenced by a 3dmark single-thread score of 1060 and a passmark single-thread score of 4135, is ample for this workload.

CPU Role

The AMD Ryzen 5 7600X is built on the Zen 4 architecture, codenamed Raphael, and manufactured on a 5 nm process by TSMC. It features 6 cores and 12 threads, with a base clock of 4.70 GHz and a boost clock of 5.30 GHz. The cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a shared 32 MB of L3 cache. This configuration is well-suited for a game like Doom, which is a 2016 release and does not heavily utilize multi-threading beyond what a modern 6-core processor provides.

The benchmark data for the CPU shows strong single-thread and multi-thread capabilities. In Cinebench R23, the 7600X scores 3406 in single-core and 24128 in multi-core. The Geekbench scores are 2892 single-core and 12905 multi-core. The 3dmark 16-thread score of 6879 is notably close to the max-thread score of 6845, which indicates that the 12 threads are being utilized efficiently without significant scaling issues beyond 8 threads. The 3dmark 2-thread score of 2028 and 4-thread score of 3796 show that the processor scales well with additional threads, but the game's engine appears to cap out around 8 threads, as evidenced by the 8-thread score of 5715 being much lower than the 16-thread score.

In terms of rivals, the 7600X's average benchmark score of 26272 places it in the 83rd percentile of all CPUs. Its nearest rivals are the AMD Ryzen 7 PRO 6850U (avg score 26262, deltaPct 0), the AMD Ryzen 7 7735U (avg score 26305, deltaPct -0.1), the AMD Ryzen 5 PRO 5655GE (avg score 26320, deltaPct -0.2), and the AMD Ryzen 7 5700X (avg score 26214, deltaPct 0.2). The 7600X is effectively tied with these processors, with deltas of less than 0.2% in either direction. This means that for Doom specifically, the CPU's role is not to be the star of the show but to provide a stable, high-frequency foundation that does not bottleneck the GPU.

The CPU's memory support for DDR5 with dual-channel configuration and a bandwidth of 83.2 GB/s is adequate for feeding the GPU at high frame rates. The integrated Radeon Graphics are present but not relevant for this discrete GPU setup. The 7600X's TDP of 105 W and its 5 nm process node make it an efficient choice, but the data shows that in this specific game, the CPU is rarely the limiting factor. Even at 1080p Low, where the system hits 364.9 FPS, the CPU is not holding back the GPU; rather, it is the GPU's raw fill rate that allows such high numbers.

GPU Role

The AMD Radeon RX 7900 XTX is a flagship GPU built on the RDNA 3.0 architecture, codenamed Plum Bonito, with the Navi 31 chip. It has 6144 shading units, 384 texture mapping units, and 192 raster operation pipelines. The GPU is equipped with 24 GB of GDDR6 memory on a 384-bit bus, delivering a bandwidth of 960.0 GB/s. The clock speeds are a base of 1929 MHz, a boost of 2498 MHz, and a game clock of 2365 MHz. The memory runs at 2500 MHz, which translates to 20 Gbps effective.

The GPU's performance in Doom is directly tied to its memory bandwidth and compute capabilities. At 4K Ultra, the average FPS of 78.8 is the lowest in the dataset, and this is where the GPU's 960.0 GB/s bandwidth is being heavily taxed. The pixel rate of 479.6 GPixel/s and texture rate of 959.2 GTexel/s are substantial, but the Ultra preset in Doom at 4K resolution is a demanding workload. The FP32 performance of 61.39 TFLOPS is more than sufficient for this game, but the memory subsystem becomes the limiting factor at higher resolutions and quality settings.

The GPU's benchmark scores reflect its high-end positioning. In 3dmark Steel Nomad DX12, it scores 6841. In Geekbench Vulkan, it scores 192597, and in OpenCL, it scores 189573. The Passmark G3D score is 31238, and the Passmark GPU Compute score is 17689. The average benchmark score of 44019 places the GPU in the 85th percentile of all GPUs. Its nearest rivals include the AMD Radeon Pro 580 (avg score 44195, deltaPct -0.4), the NVIDIA GeForce RTX 4090 Mobile (avg score 43667, deltaPct 0.8), the NVIDIA Quadro M6000 (avg score 43313, deltaPct 1.6), and the NVIDIA GeForce RTX 4070 Ti (avg score 44900, deltaPct -2). The RX 7900 XTX is within 2% of all these rivals, indicating that it sits in a competitive performance band.

In Doom specifically, the GPU's role becomes more pronounced as resolution increases. At 1440p High, the system hits 175.4 FPS, which is a comfortable margin above 144 Hz refresh rates. At 4K High, the average of 91.8 FPS is still above 60 FPS, making it a viable 4K gaming experience. The GPU's 24 GB of VRAM is more than enough for Doom at any resolution, as the game is from 2016 and does not have high VRAM demands. The data shows that the GPU's performance scales predictably with resolution and settings, with the 4K Ultra preset being the only one that pushes the GPU to its limits in this title.

FAQ

Q: What is the average FPS at 4K Ultra settings for this combo?

A: The average FPS at 3840x2160 with Ultra settings is 78.8 FPS.

Q: How does the CPU's single-thread performance compare to its multi-thread performance in this game?

A: The CPU's single-thread performance is strong, with a 3dmark single-thread score of 1060 and a Cinebench R23 single-core score of 3406. The multi-thread performance is also solid, with a Cinebench R23 multi-core score of 24128, but the game does not appear to scale beyond 8 threads, as the 3dmark 8-thread score of 5715 is significantly lower than the 16-thread score of 6879.

Q: Which resolution and settings combination yields the highest average FPS?

A: The highest average FPS is 364.9, achieved at 1920x1080 with Low settings.

Q: Is the GPU or CPU the limiting factor at 4K resolution?

A: The data indicates the GPU is the primary limiting factor at 4K, as the difference between Low and Ultra settings at 4K is 45.7 FPS (124.5 versus 78.8), which is a larger swing than what the CPU alone could account for.

Q: How does this combo rank among all tested combos in Doom?

A: This combo ranks 258th out of 1681 tested combos in Doom, placing it in the top 15% of all configurations.

Q: What is the GPU's average benchmark score relative to its nearest rival?

A: The GPU's average benchmark score is 44019, which is 0.4% lower than the AMD Radeon Pro 580 (44195) and 0.8% higher than the NVIDIA GeForce RTX 4090 Mobile (43667).

How This Combo Ranks

The AMD Ryzen 5 7600X and AMD Radeon RX 7900 XTX combination achieves a rank of 258 out of 1681 tested combos in Doom. This places it in the top 15.3% of all configurations, which is a strong showing for a system that pairs a mid-range 6-core CPU with a high-end GPU. The ranking reflects the system's ability to deliver high frame rates across all resolutions, but particularly at 1080p and 1440p, where the CPU and GPU work in concert to produce results well above the average.

The combo's rank is likely held back by the 4K Ultra result of 78.8 FPS, which is the lowest of any tested setting. While this is still playable, other combos with more powerful GPUs or better memory configurations may push higher at 4K. However, the data shows that at 1440p High, the combo delivers 175.4 FPS, which is an excellent result for competitive play. At 1080p High, the 265.4 FPS average is well beyond what most displays can show, making this combo a top-tier choice for high-refresh-rate gaming.

In the context of the GPU's rivals, the RX 7900 XTX is within 2% of the nearest comparable GPUs in average benchmark score, but the combo ranking in Doom specifically suggests that the CPU is not a weak link. The Ryzen 5 7600X's 83rd percentile standing among CPUs, combined with the GPU's 85th percentile standing, creates a balanced system that does not exhibit a significant bottleneck at any resolution. The rank of 258 out of 1681 indicates that there are many other combos that can match or exceed this performance, but for a 6-core CPU paired with a flagship GPU, this is a commendable result. The data confirms that this combo is well-suited for Doom, offering high frame rates across the board with only the most demanding 4K Ultra preset requiring any compromise.