Doom

The Intel Core i5-11400F paired with the AMD Radeon RX 570 delivers measured frame rates in Doom that range from 20.6 FPS at 4K Ultra to 90.7 FPS at 1080p Low. The combo ranks 1633rd out of 1681 tested configurations, placing it in the lower percentile for this title. The following analysis breaks down the scaling behavior, the roles of the CPU and GPU, and the optimal settings based on the measured data.

Resolution Scaling

The measured FPS across resolutions and presets reveals a steep performance drop as pixel count increases. At Low settings, the average frame rate falls from 90.7 FPS at 1920x1080 to 61.6 FPS at 2560x1440, and further to 33.7 FPS at 3840x2160. The Medium preset follows a similar pattern: 80.6 FPS at 1080p, 50.2 FPS at 1440p, and 25.5 FPS at 4K. High settings yield 66.9 FPS at 1080p, 42 FPS at 1440p, and 25.3 FPS at 4K. Ultra settings are the most demanding, with 58.9 FPS at 1080p, 33.3 FPS at 1440p, and 20.6 FPS at 4K.

The scaling from 1080p to 1440p is substantial, but the drop from 1440p to 4K is even more pronounced in relative terms. For example, at High settings, the 1080p result of 66.9 FPS drops to 42 FPS at 1440p, a reduction of 24.9 FPS, while the 1440p to 4K transition drops from 42 to 25.3 FPS, a reduction of 16.7 FPS. This pattern indicates that the GPU becomes the primary limiting factor as resolution increases. At 1080p, even the Ultra preset maintains 58.9 FPS, suggesting that the CPU and GPU can handle the game’s workload at that resolution. However, at 4K, even Low settings only reach 33.7 FPS, which is far below the frame rates needed for a fluid experience. The data shows that the RX 570’s compute and memory resources are insufficient for 4K rendering in Doom, regardless of the preset chosen.

The gap between Low and Ultra presets also narrows in absolute terms as resolution rises. At 1080p, the difference is 31.8 FPS (90.7 vs 58.9), at 1440p it is 28.3 FPS (61.6 vs 33.3), and at 4K it is 13.1 FPS (33.7 vs 20.6). This suggests that at higher resolutions, the GPU is so heavily loaded that reducing settings has a smaller impact on frame rate. The 4 GB GDDR5 memory and 224 GB/s bandwidth of the RX 570 are likely contributors to this behavior, as high-resolution textures and frame buffers demand more memory capacity and bandwidth than the card can provide.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread processor based on the Rocket Lake architecture, manufactured on a 14 nm process. It has a base clock of 2.60 GHz and a boost clock of 4.40 GHz, with 12 MB of shared L3 cache. The CPU supports DDR4 memory in a dual-channel configuration, providing 51.2 GB/s of memory bandwidth. Its TDP is 65 W, and it uses the Intel Socket 1200. The CPU’s synthetic benchmark results are strong for its class: it scores 14372 in Cinebench R23 multi-core and 2029 in single-core, 6036 in Cinebench R20 multi-core, and 7579 in Geekbench multi-core. Its average benchmark score is 17181, placing it in the 75th percentile of all CPUs. The nearest rivals are the AMD Ryzen 7 5700U (17189, delta 0%), Intel Core i7-1260P (17212, delta -0.2%), Intel Core Ultra 7 164U (17215, delta -0.2%), and Intel Core i5-1240U (17141, delta 0.2%). These deltaPct values indicate that the Core i5-11400F performs within 0.2% of its closest competitors, making it a well-rounded mid-range processor.

In Doom, the CPU’s role is to feed the GPU with draw calls and game logic. The measured FPS at 1080p Low (90.7) and Medium (80.6) suggests that the CPU is not a bottleneck at these settings. The boost clock of 4.40 GHz provides strong single-threaded performance, which is important for a 2016 FPS title that may not fully utilize many cores. The 12 threads offer headroom for background tasks, but the game’s engine likely relies more on single-core speed. The CPU’s multi-threaded scores, such as 14372 in Cinebench R23, are more than adequate for this workload. At 4K, the frame rates are clearly limited by the GPU, as the CPU’s performance does not change with resolution. The data shows that the Core i5-11400F is capable of sustaining high frame rates at 1080p, and its performance is not the limiting factor in this configuration.

GPU Role

The AMD Radeon RX 570 is based on the Polaris 20 chip with GCN 4.0 architecture, manufactured on a 14 nm process at GlobalFoundries. It contains 5,700 million transistors on a 232 mm² die. The GPU has 2048 shading units, 128 texture mapping units, and 32 raster operation units. Its base clock is 1168 MHz, with a boost clock of 1244 MHz. The memory subsystem consists of 4 GB of GDDR5 on a 256-bit bus, running at 1750 MHz (7 Gbps effective), yielding a bandwidth of 224 GB/s. The pixel rate is 39.81 GPixel/s, the texture rate is 159.2 GTexel/s, and FP32 performance is 5.095 TFLOPS. The GPU’s average benchmark score is 30158, placing it in the 74th percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce RTX 5060 (30109, delta 0.2%), AMD Radeon RX 7700 XT (30097, delta 0.2%), NVIDIA Tesla M60 (29969, delta 0.6%), and NVIDIA GeForce RTX 5070 Mobile (29928, delta 0.8%). These deltaPct values show that the RX 570 is slightly ahead of these competitors in average benchmark score.

In Doom, the GPU is the dominant factor in determining frame rates, especially at higher resolutions. The measured FPS at 4K Ultra is 20.6, which is very low. The 4 GB VRAM may be insufficient for high-resolution textures, although the data does not include VRAM usage. The memory bandwidth of 224 GB/s is a likely constraint at 4K, where the frame buffer demands are high. At 1080p, the GPU delivers 90.7 FPS on Low, indicating that it can handle the game at lower resolutions. The scaling from 1080p to 4K shows a steep drop, consistent with a GPU that is heavily stressed at higher resolutions. The GPU’s FP32 performance of 5.095 TFLOPS and texture rate of 159.2 GTexel/s are modest by modern standards, but they are sufficient for 1080p gaming in Doom. The launch MSRP of the GPU is 169 USD, and it was released on 2017-04-17, making it an older design that still performs adequately at lower resolutions.

FAQ

Q: What is the average FPS at 1080p High settings?

A: The measured average FPS is 66.9 at 1920x1080 with High settings.

Q: How does the Core i5-11400F’s average benchmark score compare to its nearest rival?

A: The CPU scores 17181, while the AMD Ryzen 7 5700U scores 17189, with a deltaPct of 0%. The Intel Core i7-1260P scores 17212, with a deltaPct of -0.2%.

Q: What is the GPU’s memory configuration?

A: The AMD Radeon RX 570 has 4 GB of GDDR5 memory on a 256-bit bus, providing 224 GB/s of bandwidth.

Q: What is the combo’s rank in Doom?

A: The combination ranks 1633 out of 1681 tested configurations.

Q: At which resolution and preset does the combo achieve the highest FPS?

A: The highest measured FPS is 90.7 at 1920x1080 with Low settings.

Q: What is the CPU’s boost clock?

A: The Intel Core i5-11400F has a boost clock of 4.40 GHz.

Settings Recommendations

Based on the measured FPS, the optimal preset depends on the target resolution. At 1080p, Medium provides 80.6 FPS, which offers a good balance between visual quality and frame rate. High still delivers 66.9 FPS, while Ultra drops to 58.9 FPS. For players prioritizing frame rate, Low at 1080p yields 90.7 FPS. At 1440p, only Low reaches 61.6 FPS; Medium, High, and Ultra fall to 50.2, 42, and 33.3 FPS respectively. At 4K, all presets are below 34 FPS, with even Low at 33.7 FPS, making 4K impractical. Therefore, the recommended settings are 1080p Medium or High for a smooth experience, or 1440p Low if higher resolution is desired. The data shows that the RX 570 is best utilized at 1080p, where it can maintain frame rates above 60 FPS on Medium and High presets. For 1440p, only the Low preset approaches playable frame rates, and 4K is not viable with any setting.