Doom

The AMD Ryzen 9 5900X and AMD Radeon RX 6750 XT combination delivers a highly capable Doom experience, placing in the 49th percentile of all tested combos with a rank of 822 out of 1681. The data shows this pairing excels at 1080p and 1440p, where frame rates comfortably exceed high-refresh-rate thresholds, though 4K Ultra settings will challenge the GPU.

FAQ

Q: What is the best resolution for this combo in Doom?

A: The data indicates 2560x1440 is the sweet spot, delivering 117.5 FPS at High settings and 96.1 FPS at Ultra, which balances visual fidelity with smooth gameplay.

Q: Can this system handle 4K gaming in Doom?

A: Yes, but only at lower presets. At 3840x2160, the combo achieves 63.1 FPS on High, 72.6 FPS on Medium, and 82.1 FPS on Low, while Ultra drops to 52.8 FPS.

Q: How does the CPU compare to its nearest rivals?

A: The Ryzen 9 5900X scores 39,453 on average benchmarks, sitting 0.2% above the AMD EPYC 4245P and 0.9% above the Intel Core i7-13700F, while trailing the AMD Ryzen 7 PRO 8845HS by 0.7%.

Q: How does the GPU stack up against similar cards?

A: The RX 6750 XT averages 35,327 in benchmarks, placing it 0.2% above the AMD Radeon RX 5600M and 1.3% below the NVIDIA GeForce RTX 3080, with a 79th percentile ranking among all GPUs.

Q: What frame rate can I expect at 1080p with max settings?

A: At 1920x1080 with Ultra settings, the measured average FPS is 146, which is above the 144Hz refresh rate that many competitive gamers target.

Q: Is the CPU or GPU the limiting factor in this game?

A: The data suggests the GPU becomes the primary bottleneck at higher resolutions, as the FPS drop from 1080p to 4K is substantial (146 to 52.8 at Ultra), while the 12-core CPU provides ample headroom.

CPU Role

The AMD Ryzen 9 5900X is a 12-core, 24-thread processor from the 5000 series, built on the Zen 3 architecture (codenamed Vermeer) using TSMC's 7nm process. It operates with a base clock of 3.70 GHz and a boost clock of 4.80 GHz, with a 105W TDP. The CPU's cache hierarchy includes 64 KB of L1 per core, 512 KB of L2 per core, and 64 MB of L3 cache. Memory support is dual-channel DDR4 with 51.2 GB/s bandwidth, and the chip connects via PCIe Gen 4.

In Doom, the CPU's role is to feed the GPU with draw calls and physics data. The 3DMark benchmark results show strong scaling: 9,075 with 16 threads, 6,601 with 8 threads, and 10,075 with max threads, while single-thread performance is 941. The Cinebench R23 scores of 33,150 multi-core and 4,680 single-core indicate robust processing power. This CPU sits in the 90th percentile of all CPUs, with an average benchmark score of 39,453. Compared to its nearest rivals, it trails the AMD Ryzen 7 PRO 8845HS by 0.7% but leads the AMD EPYC 4245P by 0.2% and the Intel Core i7-13700F by 0.9%.

For Doom, the high single-thread performance (evident from the 3DMark single-thread score of 941) ensures that the game's main thread remains responsive. The 24 threads also provide headroom for background tasks and streaming, making the CPU unlikely to bottleneck the GPU at most settings. However, at 1080p with Low settings where the GPU is less stressed, the CPU's performance becomes more relevant for achieving the 240.9 FPS measured.

GPU Role

The AMD Radeon RX 6750 XT is based on the Navi 22 chip with RDNA 2.0 architecture, manufactured on a 7nm process at TSMC. It features 2,560 shading units, 160 texture mapping units, and 64 raster operation units, along with 40 ray tracing cores. The GPU clocks run at 2150 MHz base, 2495 MHz game, and 2600 MHz boost, with memory at 2250 MHz (18 Gbps effective). The 12 GB of GDDR6 memory operates on a 192-bit bus, providing 432.0 GB/s of bandwidth.

The GPU's compute capabilities include 13.31 TFLOPS FP32 and 26.62 TFLOPS FP16, with pixel rate of 166.4 GPixel/s and texture rate of 416.0 GTexel/s. Its 250W TDP requires a 600W suggested PSU, drawing power from a 1x 6-pin and 1x 8-pin connector. The card occupies a dual-slot design measuring 267 mm in length. In benchmarks, the GPU scores 20,700 in Passmark G3D and 95,550 in Passmark GPU Compute, with a 79th percentile ranking among all GPUs.

The RX 6750 XT's nearest rivals show it performs within a tight band: it edges out the AMD Radeon RX 5600M by 0.2% but trails the AMD Radeon 880M by 0.9% and the NVIDIA GeForce RTX 3080 by 1.3%. The 12 GB VRAM capacity proves sufficient for Doom's textures at all tested settings, and the 432.0 GB/s bandwidth supports high-resolution rendering. In this game, the GPU is clearly the dominant factor in frame rate scaling, as evidenced by the FPS variations across resolutions and presets.

How This Combo Ranks

This specific combination of AMD Ryzen 9 5900X and AMD Radeon RX 6750 XT ranks 822nd out of 1,681 tested combos in Doom, placing it just above the midpoint of all configurations. This ranking reflects the balance between the CPU's 90th percentile standing and the GPU's 79th percentile performance. The combo's position suggests that while the CPU is top-tier, the GPU holds back the overall results from reaching the upper echelons.

When interpreting this rank, consider that Doom is a well-optimized game that scales strongly with GPU capability. The CPU's high benchmark scores (e.g., 39,453 average) indicate it can support faster GPUs without becoming a bottleneck, but the RX 6750 XT's mid-high tier positioning caps the combo's potential. The data shows the combo performing admirably at 1080p and 1440p, but the 4K results demonstrate where the GPU's limitations emerge relative to higher-ranked combos with more powerful graphics cards.

Settings Recommendations

For the best experience, the data suggests prioritizing 2560x1440 resolution with High settings. This configuration yields 117.5 FPS, which is well above the 60 FPS standard and approaches high-refresh territory. At this resolution, Ultra settings still deliver 96.1 FPS, making it a viable option for those wanting maximum visual quality without sacrificing smoothness.

At 1920x1080, all settings provide excellent frame rates: 177.9 FPS on High, 208.8 FPS on Medium, and 240.9 FPS on Low. The Ultra preset at 1080p drops to 146 FPS, which remains highly playable. For users with 4K displays, the Medium preset at 72.6 FPS offers the best compromise, as Low (82.1 FPS) sacrifices too much quality while High (63.1 FPS) and Ultra (52.8 FPS) fall below the 60 FPS threshold that most players find acceptable.

The optimal preset depends on the display's refresh rate. For 144Hz monitors at 1080p, the Ultra setting at 146 FPS is ideal. For 1440p at 144Hz, the High preset at 117.5 FPS provides the best balance, though users with 100Hz displays could comfortably use Ultra at 96.1 FPS. At 4K, the Medium preset at 72.6 FPS is recommended for 60Hz displays.

Measured FPS Breakdown

At 1920x1080, the measured average FPS across settings are as follows: Low delivers 240.9 FPS, Medium 208.8 FPS, High 177.9 FPS, and Ultra 146 FPS. The progression from Low to Ultra shows a consistent decline of roughly 30-40 FPS per tier, indicating the GPU's scaling with graphical complexity.

Moving to 2560x1440, the frame rates decrease significantly: Low achieves 157.2 FPS, Medium 135.3 FPS, High 117.5 FPS, and Ultra 96.1 FPS. The percentage drop from 1080p to 1440p ranges from 34.8% at Low (240.9 to 157.2) to 34.2% at Ultra (146 to 96.1), showing a fairly uniform scaling factor.

At 3840x2160, the results are: Low 82.1 FPS, Medium 72.6 FPS, High 63.1 FPS, and Ultra 52.8 FPS. The 4K results show a more pronounced drop from 1440p, with reductions of 47.8% at Low (157.2 to 82.1), 46.3% at Medium (135.3 to 72.6), 46.3% at High (117.5 to 63.1), and 45.1% at Ultra (96.1 to 52.8). This consistent ~46% reduction across settings indicates resolution is the dominant factor.

Resolution Scaling

The FPS drop from 1080p to 4K reveals important insights about the limiting component. At Ultra settings, the frame rate falls from 146 FPS at 1080p to 96.1 FPS at 1440p (a 34.2% reduction), then to 52.8 FPS at 4K (a 45.1% reduction from 1440p). This steep decline indicates the GPU is the primary bottleneck, as the pixel count quadruples from 1080p to 4K, requiring substantially more GPU throughput.

The CPU's role in this scaling is minimal. With a 12-core, 24-thread design and strong single-thread performance (941 in 3DMark single-thread), the Ryzen 9 5900X can maintain high frame rates even at 1080p Low (240.9 FPS). The fact that frame rates scale nearly linearly with resolution changes, rather than plateauing at a CPU limit, confirms the GPU is fully saturated at higher resolutions.

At 1080p, the GPU is still the main contributor, but the CPU becomes more relevant as frame rates approach 240 FPS. The 240.9 FPS at Low settings suggests the CPU can drive very high frame rates, but the GPU's rendering speed limits the Ultra preset to 146 FPS. At 4K, the GPU's texture fill rate and bandwidth (432.0 GB/s) become critical, and the 12 GB VRAM is sufficient for the game's demands. The measured data shows that users targeting 4K should expect to use Medium or Low settings to maintain playable frame rates.