Doom

The AMD Ryzen 7 5700X paired with the AMD Radeon RX 6650 XT delivers a compelling 1080p and 1440p experience in Doom, but the data reveals a clear ceiling at 4K. The measured frame rates show a system that is well-balanced for high-refresh gaming at mainstream resolutions, yet struggles to maintain playable performance when pixel count escalates. This analysis breaks down the CPU and GPU contributions, settings scaling, and overall ranking against other tested combinations.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 7 5700X is an 8-core, 16-thread processor based on the Zen 3 architecture, with a base clock of 3.40 GHz and a boost clock of 4.60 GHz. Its 32 MB of shared L3 cache and support for DDR4 memory with 51.2 GB/s bandwidth provide a solid foundation for gaming workloads. In synthetic benchmarks, the chip scores 9,500 in Cinebench R20 multi-core and 1,341 in single-core, while achieving a 3DMark single-thread score of 921 and a 3DMark 16-thread score of 6,858. These results place the CPU in the 83rd percentile among all tested processors, with an average benchmark score of 26,214.

The nearest rivals in the database show how tightly grouped this processor is. The Intel Core i9-11900KF scores 26,196, a mere 0.1% difference, while the AMD Ryzen 7 PRO 6850U and AMD Ryzen 5 7600X are within 0.2% on either side. This suggests that Doom's frame rates are unlikely to be bottlenecked by the CPU at lower resolutions, as the processor's single-thread performance is competitive. However, the game's engine, originally released in 2016, may not fully utilize all 16 threads. The data from the measured FPS shows that at 1080p Low, the combo hits 200.5 FPS average, indicating the CPU can feed the GPU sufficiently for very high frame rates. At 4K Ultra, where the GPU is the limiting factor, the CPU's role diminishes, as evidenced by the drop to 41.2 FPS average.

GPU Role — VRAM, clocks, and how they relate to this game's results

The AMD Radeon RX 6650 XT is built on the RDNA 2.0 architecture with a Navi 23 chip, featuring 2,048 shading units and 64 ROPs. Its 8 GB of GDDR6 memory on a 128-bit bus provides 280.3 GB/s of bandwidth, which is adequate for 1080p and 1440p textures but may become a constraint at 4K with Ultra settings. The GPU's boost clock is 2,635 MHz, with a game clock of 2,410 MHz, enabling a pixel rate of 168.6 GPixel/s and a texture rate of 337.3 GTexel/s. The FP32 performance is 10.79 TFLOPS, which aligns with its 72nd percentile ranking among all GPUs and an average benchmark score of 29,024.

Comparatively, the GPU's nearest rivals are the AMD Radeon RX 6800M (score 29,011, 0% delta), AMD Radeon RX 470 (score 28,996, 0.1% delta), Intel Arc A370M (score 29,175, -0.5% delta), and AMD Radeon RX Vega M GH (score 29,197, -0.6% delta). This clustering suggests the RX 6650 XT is positioned in a tight performance band. In Doom, the GPU's role becomes dominant at higher resolutions. The measured FPS shows a steep decline from 1080p Ultra (117.8 FPS) to 4K Ultra (41.2 FPS), a 65% drop. The 8 GB VRAM may be sufficient for High settings at 4K (52.5 FPS) but pushing to Ultra likely increases memory pressure, contributing to the sub-60 FPS result.

Settings Recommendations — which preset gives the best experience per the measured rows

For a smooth experience, the data suggests that Medium settings at 1440p offer the best balance. The measured 114.9 FPS average at 2560x1440 Medium is well above the 60 FPS threshold, and it is significantly higher than the 77.1 FPS at Ultra. At 1080p, Medium yields 171.9 FPS, which is excellent for high-refresh monitors, while High provides 150.2 FPS. However, 1080p Ultra still delivers 117.8 FPS, making it viable for competitive play.

At 4K, the situation changes. The High preset produces 52.5 FPS, which is borderline playable but not ideal for fast-paced action. Dropping to Medium yields 63.9 FPS, which is smoother, while Low achieves 71.5 FPS. Ultra at 4K is the worst choice, with only 41.2 FPS. Therefore, the recommendation is to use Medium at 1440p or High at 1080p for the best visual fidelity per the measured frame rate. For 4K, Medium is the highest setting that maintains playability, with Low as a fallback for higher frame rates.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific combination of the Ryzen 7 5700X and RX 6650 XT ranks 1,060 out of 1,681 tested combos in Doom. This places it in the lower-middle tier of the database, which is surprising given the component specs. The rank suggests that many other CPU-GPU pairings outperform this one in this particular game. The data implies that while the CPU and GPU are individually capable, their combination may not be optimal for Doom's engine, which could favor different architectures or higher memory bandwidth.

The percentile rankings (CPU 83rd, GPU 72nd) are higher than the combo rank would suggest, indicating that the pairing efficiency is below what the individual scores predict. This could be due to the game's reliance on specific GPU features or CPU cache behavior. The measured FPS at 1080p Ultra (117.8 FPS) is respectable, but other combos in the database likely achieve much higher numbers, pushing this pairing down the list. The rank serves as a warning that for Doom specifically, a different GPU with more VRAM or a CPU with higher single-thread performance might yield better results.

FAQ

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

A: Based on the measured FPS, 1080p is the strongest, with all presets exceeding 117 FPS. 1440p is also viable, with Medium achieving 114.9 FPS, but 4K should be avoided for Ultra settings.

Q: How much performance is lost when moving from 1080p to 4K?

A: At Medium settings, the average FPS drops from 171.9 at 1080p to 63.9 at 4K, a reduction of 108 FPS. At Ultra, the drop is from 117.8 to 41.2, a 65% decrease.

Q: Is the CPU or GPU the bottleneck at 4K Ultra?

A: The data indicates the GPU is the limiting component. The CPU's strong single-thread score of 921 in 3DMark suggests it is not the constraint at high resolutions, where the GPU's 8 GB VRAM and 10.79 TFLOPS are stressed.

Q: Does the RX 6650 XT's 8 GB VRAM affect 4K performance?

A: Yes, the steep decline from 4K High (52.5 FPS) to 4K Ultra (41.2 FPS) implies that the Ultra preset may exceed the VRAM capacity, causing a larger performance hit than settings alone would explain.

Q: How does the combo rank compare to the individual component rankings?

A: The CPU ranks in the 83rd percentile and the GPU in the 72nd, but the combo ranks 1,060 out of 1,681. This gap suggests the pairing is less efficient than the sum of its parts for Doom.

Q: Which preset offers the highest FPS above 60 at 1440p?

A: Medium is the highest preset that exceeds 60 FPS, achieving 114.9 FPS. Ultra falls to 77.1 FPS, which is still above 60, but Medium provides a larger margin.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

At 1920x1080, the combo delivers its highest frame rates. Low settings produce an average of 200.5 FPS, Medium yields 171.9 FPS, High reaches 150.2 FPS, and Ultra drops to 117.8 FPS. These numbers show a 41% reduction from Low to Ultra, indicating that the GPU scales predictably with settings.

Moving to 2560x1440, the performance remains strong. Low averages 129.3 FPS, Medium 114.9 FPS, High 97 FPS, and Ultra 77.1 FPS. The drop from Low to Ultra is 40%, similar to 1080p, but the absolute values are lower due to the increased pixel count.

At 3840x2160, the frame rates fall significantly. Low averages 71.5 FPS, Medium 63.9 FPS, High 52.5 FPS, and Ultra 41.2 FPS. The reduction from Low to Ultra is 42%, but the impact is more severe because the baseline is lower. Notably, the gap between High and Ultra at 4K is 11.3 FPS, which is larger than the 4.7 FPS gap at 1440p, further suggesting a VRAM or bandwidth bottleneck at Ultra settings.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The scaling from 1080p to 4K reveals a clear pattern. At Low settings, the FPS drops from 200.5 to 71.5, a 64% reduction. At Medium, the drop is from 171.9 to 63.9, a 63% reduction. High settings see a drop from 150.2 to 52.5, a 65% reduction, and Ultra drops from 117.8 to 41.2, also a 65% reduction. This consistent ~64-65% decline across all presets indicates that the GPU is the primary limiting factor, as the CPU's performance headroom is exhausted by the increased pixel workload.

The uniform scaling percentage suggests that the RX 6650 XT's memory bandwidth of 280.3 GB/s is the bottleneck. At 4K, the GPU must process four times the pixels of 1080p, and the 128-bit memory bus struggles to feed the shaders. The fact that Low settings at 4K (71.5 FPS) are comparable to Ultra at 1440p (77.1 FPS) further highlights this. The CPU, with its 32 MB L3 cache and high single-thread score, is not the constraint; instead, the GPU's raw throughput and memory subsystem dictate the performance ceiling. For gamers targeting 4K, the data suggests that lowering settings to Medium provides the best compromise, but the combo is fundamentally optimized for 1080p and 1440p gaming.