Doom

The Intel Core i5-12400 paired with the AMD Radeon RX 6750 XT delivers a robust Doom experience, with performance scaling that clearly identifies the GPU as the primary constraint at higher resolutions. At 1080p, the combination is exceptionally strong, but the transition to 4K reveals a significant drop in frame rates that aligns with the graphics card’s capabilities.

Resolution Scaling

The measured frame rates show a steep performance curve as resolution increases. At 1920x1080 with High settings, the combo produces 174.4 FPS, which is already a high-refresh-rate experience. Moving to 2560x1440 at the same settings drops the average to 115.1 FPS, a reduction of 34%. Pushing further to 3840x2160 yields 65.2 FPS, which is 43% lower than the 1440p result and 63% lower than the 1080p figure.

This scaling pattern indicates that the Radeon RX 6750 XT is the limiting factor at 4K. The CPU’s performance headroom is evident at 1080p, where the frame rates reach 243.8 FPS on Low settings. That result suggests the processor can feed the GPU far more data than the graphics card can render at lower resolutions. However, the gap between 1080p and 1440p is larger than the gap between 1440p and 4K, which points to a transition where the GPU’s pixel throughput becomes the bottleneck rather than the CPU’s geometry or draw-call processing.

The data shows that dropping from Ultra to High settings at 4K improves the average from 49.8 FPS to 65.2 FPS, a 31% gain. This is a substantial jump, indicating that the Ultra preset’s additional effects are particularly demanding on the GPU’s shading units and memory bandwidth. At 1080p, the same settings change yields a smaller relative improvement, going from 144.3 FPS to 174.4 FPS, which is a 21% increase. The diminishing returns at lower resolutions further confirm that the GPU is the primary constraint, as the CPU has enough headroom to maintain high frame rates regardless of the graphics load.

GPU Role

The AMD Radeon RX 6750 XT is built on the RDNA 2.0 architecture with a Navi 22 chip manufactured on TSMC’s 7 nm process. It features 12 GB of GDDR6 memory on a 192-bit bus, providing 432.0 GB/s of bandwidth. The GPU operates with a base clock of 2150 MHz and a boost clock of 2600 MHz, with a game clock rated at 2495 MHz. These specifications align with the performance observed in Doom, where the card’s 2560 shading units and 64 ROPs handle the game’s id Tech 6 engine efficiently.

The memory configuration is particularly relevant for Doom’s texture streaming. At 4K Ultra, the game’s high-resolution textures can consume significant VRAM, and the 12 GB capacity ensures the card does not run into allocation limits. The 432.0 GB/s bandwidth is sufficient for the game’s data transfer needs, as evidenced by the consistent frame rates across settings. The measured 4K Ultra average of 49.8 FPS suggests the GPU is compute-bound rather than memory-bound, as the drop from Medium (73.3 FPS) to Ultra (49.8 FPS) is a 32% reduction, which is larger than the 11% reduction from Low (81.6 FPS) to Medium (73.3 FPS).

The GPU’s FP32 performance of 13.31 TFLOPS and texture rate of 416.0 GTexel/s are the key drivers for Doom’s lighting and particle effects. The benchmark results show that the card’s DirectX 12 score of 80 in PassMark is modest, but this does not translate to poor gaming performance, as the game’s Vulkan API support leverages the hardware more effectively. The GPU’s percentile ranking of 79 against all GPUs places it above the median, and its average benchmark score of 35327 is competitive with the nearest rivals.

How This Combo Ranks

In the database of tested combinations, this specific pairing of the Intel Core i5-12400 and AMD Radeon RX 6750 XT achieves a rank of 862 out of 1681 combos for Doom. This places the system in the 51st percentile of all tested configurations, meaning roughly half of the tested combos deliver higher average frame rates. The ranking reflects the balance between the CPU and GPU, where the processor’s mid-range standing and the graphics card’s upper-mid-range positioning combine to produce a solid but not top-tier result.

The CPU’s average benchmark score of 19850 places it in the 77th percentile of all processors, with nearest rivals including the Intel Core i7-9700 (0.1% ahead) and the Intel Core i5-11600K (0.4% ahead). The GPU’s average score of 35327 puts it in the 79th percentile of all GPUs, with the NVIDIA GeForce RTX 3080 being 1.3% ahead. When paired, the combination’s ranking of 862 suggests that the GPU’s slightly higher percentile does not fully compensate for the CPU’s limitations in Doom, which is a game that can benefit from higher single-thread performance.

The data indicates that the combo’s rank is influenced more by the GPU than the CPU, as the frame rates scale predictably with graphics settings. At 1080p High, the 174.4 FPS result is strong enough to place the combo above many alternatives, but the 4K Ultra result of 49.8 FPS is below the threshold for smooth gameplay on high-refresh-rate displays. This positioning suggests that users with 1080p or 1440p monitors will find the combo well-suited, while those targeting 4K may need to adjust settings to achieve playable frame rates.

Settings Recommendations

The measured data provides clear guidance on optimal settings for different resolution targets. At 1920x1080, all presets deliver playable frame rates, with Low achieving 243.8 FPS, Medium achieving 210.6 FPS, High achieving 174.4 FPS, and Ultra achieving 144.3 FPS. For competitive play or high-refresh-rate displays, the High preset offers the best balance of visual quality and performance, as the jump from High to Ultra only costs 17% performance while providing diminishing visual returns.

At 2560x1440, the High preset delivers 115.1 FPS, which is sufficient for most gaming scenarios. The Medium preset at 133.5 FPS provides a 16% performance boost over High with a modest visual quality reduction. The Ultra preset drops to 93.6 FPS, which is still playable but may not fully utilize a 144Hz monitor. For users prioritizing smoothness over fidelity, Medium is the recommended choice at this resolution.

At 3840x2160, the situation is more constrained. The Low preset achieves 81.6 FPS, Medium achieves 73.3 FPS, High achieves 65.2 FPS, and Ultra drops to 49.8 FPS. For a consistent 60 FPS experience, the High preset is the best option, as it provides a 31% improvement over Ultra while maintaining a playable frame rate. The Low preset offers the highest performance but with significant visual compromises. The data shows that the Ultra preset is not recommended at 4K, as the 49.8 FPS average falls below the 60 FPS threshold that most users consider the minimum for smooth gameplay.

FAQ

Q: What is the best resolution for this combo to maintain 144 FPS?

A: At 1920x1080 with Medium settings, the combo achieves 210.6 FPS, which exceeds 144 FPS. Even at High settings, the 174.4 FPS result is above the 144 FPS threshold, making 1080p the only resolution where this combo can consistently hit that target across most presets.

Q: How does the Ultra preset at 4K compare to the Low preset at 4K?

A: The Ultra preset at 3840x2160 delivers 49.8 FPS, while the Low preset delivers 81.6 FPS. This represents a 64% performance difference, with the Low preset offering a significantly smoother experience at the cost of visual fidelity.

Q: What is the GPU’s memory configuration and how does it affect Doom?

A: The AMD Radeon RX 6750 XT has 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. This capacity is sufficient for Doom’s texture requirements at all settings, as the frame rate differences between presets are more attributable to shading and compute load than memory constraints.

Q: How does this combo’s performance at 1440p High compare to its 1080p High result?

A: At 2560x1440 High, the combo achieves 115.1 FPS, which is 34% lower than the 174.4 FPS at 1920x1080 High. This drop is consistent with the increased pixel count and indicates the GPU is the primary bottleneck at 1440p.

Q: Is the CPU or GPU more responsible for the 4K performance drop?

A: The data indicates the GPU is the limiting factor at 4K. At 1080p Low, the combo reaches 243.8 FPS, showing the CPU can support very high frame rates. The significant drop to 81.6 FPS at 4K Low demonstrates that the GPU’s rendering capacity is the constraint.

Q: What is the combo’s overall ranking among tested configurations?

A: This combo ranks 862 out of 1681 tested combinations for Doom. This places it in the middle of the distribution, reflecting a balanced but not exceptional performance profile for this specific game.