Downfall

# Downfall with AMD Ryzen 5 7400F + Intel Arc B390

The AMD Ryzen 5 7400F paired with the Intel Arc B390 delivers playable frame rates in Downfall at 1080p and 1440p, but the combo ranks near the bottom of the database at 2589 out of 2928 tested combinations. The CPU is a strong mid-range desktop part with a 65W TDP and Zen 4 architecture, while the GPU is an integrated-class solution with only 1536 shading units and a 9th percentile standing among all GPUs. Benchmark results show the system handles Low and Medium presets comfortably at mainstream resolutions, but Ultra settings and 4K push the combo beyond its practical limits.

How This Combo Ranks

The combo sits at rank 2589 out of 2928 tested combinations, placing it in the bottom 11.6% of all CPU-GPU pairings measured in this database. This low overall ranking reflects the GPU’s severe performance ceiling rather than the CPU’s capability. The Ryzen 5 7400F is a 6-core, 12-thread Zen 4 processor with a 4.70 GHz boost clock, and its Cinebench R23 multi-core score of 21765 places it in the 83rd percentile among all CPUs. In contrast, the Arc B390’s 3DMark Steel Nomad DX12 score of 1482 puts it in the 9th percentile among all GPUs, and its nearest rivals are all legacy NVIDIA parts like the GeForce GT 710 and GT 625 OEM.

The CPU’s nearest rivals in average benchmark score include the Intel Core i5-14600T at 32707 (0.1% behind), the Intel Core Ultra 7 155H at 32697 (0.2% behind), and the AMD Ryzen 7 PRO 6850H at 32812 (0.2% ahead). These tiny deltas confirm that the 7400F is competitively positioned among mainstream desktop and mobile processors. The Arc B390’s nearest GPU rivals tell a different story: the GT 520MX scores 1463 (1.3% behind), the GeForce 800M scores 1460 (1.5% behind), and the GT 710 scores 1443 (2.7% behind). This GPU is clustered with entry-level mobile and OEM parts from over a decade ago, which explains why the combined system rank is so low despite the processor’s strength.

In practical terms, the combo’s ranking means it will struggle with modern games at high settings, and Downfall is no exception. The measured frame rates confirm this pattern: at 1080p Ultra, the system delivers 44 FPS average, while at 4K Ultra it falls to 20 FPS. The discrepancy between CPU and GPU performance levels is stark, and the data suggests the GPU is the primary bottleneck in almost every scenario.

Settings Recommendations

For the best experience in Downfall, the measured data points to the Low preset at 1080p as the only setting that provides a consistently smooth frame rate above 100 FPS. At 1920x1080 with Low settings, the combo averages 106 FPS, which is the highest measured value across all resolutions and settings. The Medium preset at 1080p still delivers a respectable 87 FPS average with a minimum of 74 FPS and a maximum of 100 FPS, making it a viable option for players who want better visual fidelity without sacrificing smoothness.

The High preset at 1080p drops to 71 FPS average, which is playable but leaves less headroom for demanding scenes. At 1440p, the Medium preset delivers 62 FPS average with a minimum of 53 FPS and a maximum of 71 FPS, which is acceptable for slower-paced horror gameplay. However, the 1440p High preset falls to 51 FPS, and the 1440p Ultra preset drops to 32 FPS, which is borderline for a genre that relies on atmosphere and tension. At 4K, only the Low preset reaches 47 FPS average, while Medium manages 39 FPS, High drops to 32 FPS, and Ultra becomes unplayable at 20 FPS.

For the best balance of visual quality and performance, the Medium preset at 1080p is the recommended choice. It provides a 87 FPS average with a minimum above 70 FPS, ensuring that frame pacing remains stable during intense sequences. Players with 1440p displays should consider the Medium preset as well, since the 62 FPS average with a 53 FPS minimum is adequate for a horror title where precise timing is less critical than in competitive shooters. The Ultra preset should be avoided at all resolutions, as it incurs a massive performance penalty: at 1080p, Ultra drops to 44 FPS, which is less than half of the Low preset’s 106 FPS.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals a system that is heavily GPU-limited at higher resolutions. At Low settings, the transition from 1920x1080 (106 FPS) to 2560x1440 (76 FPS) represents a 28.3% drop, and further to 3840x2160 (47 FPS) represents a 55.7% drop from 1080p. At High settings, the same progression goes from 71 FPS at 1080p to 51 FPS at 1440p (a 28.2% drop) and then to 32 FPS at 4K (a 54.9% drop from 1080p). This consistent pattern across settings indicates that the GPU’s pixel throughput is the limiting factor, not the CPU.

The Arc B390’s specifications support this interpretation. Its pixel rate is 60.00 GPixel/s, and its texture rate is 120.0 GTexel/s, which are modest figures for a GPU with only 24 ROPs and 48 TMUs. The GPU also relies on system shared memory, meaning its bandwidth is system dependent rather than dedicated VRAM. When resolution increases, the GPU must process more pixels and access memory more frequently, and the shared memory architecture becomes a bottleneck.

At Ultra settings, the scaling is even more punishing: 1080p Ultra yields 44 FPS, 1440p Ultra yields 32 FPS (a 27.3% drop), and 4K Ultra yields 20 FPS (a 54.5% drop from 1080p). The fact that the percentage drops are similar across all settings suggests the GPU is saturated even at 1080p Ultra, and increasing resolution simply scales the workload linearly. The CPU, with its 6 cores and 12 threads running at up to 4.70 GHz, is unlikely to be the constraint at any resolution, as even the lowest frame rates remain above 20 FPS and the CPU’s Cinebench R23 single-core score of 3072 indicates strong per-thread performance.

Measured FPS Breakdown

At 1920x1080, the system delivers its best results across all settings. The Low preset averages 106 FPS, which is the only measured result above the 100 FPS threshold. The Medium preset averages 87 FPS with a minimum of 74 FPS and a maximum of 100 FPS, providing a solid experience. The High preset averages 71 FPS, and the Ultra preset averages 44 FPS. The gap between Low and Ultra at 1080p is 62 FPS, demonstrating that the GPU’s limited shading power (1536 units) and memory bandwidth are significant constraints when visual effects are increased.

At 2560x1440, the performance drops become more pronounced. The Low preset averages 76 FPS, which is still playable but 28.3% lower than the 1080p Low result. The Medium preset averages 62 FPS with a minimum of 53 FPS and a maximum of 71 FPS, making it the best choice for 1440p gaming on this combo. The High preset averages 51 FPS, and the Ultra preset drops to 32 FPS, which is below the smoothness threshold for most players. The 1440p results show a 44 FPS gap between Low and Ultra, indicating that the GPU’s fill rate and texture units are stretched thin at higher settings.

At 3840x2160, the system struggles to maintain playable frame rates except at Low settings. The Low preset averages 47 FPS, which is acceptable for a horror game with slower pacing. The Medium preset averages 39 FPS with a minimum of 33 FPS and a maximum of 44 FPS, which is borderline but potentially playable with reduced expectations. The High preset averages 32 FPS, and the Ultra preset averages 20 FPS, making both effectively unplayable. The 4K results highlight the GPU’s limitations: with a 9th percentile ranking among all GPUs and a 3DMark Steel Nomad score of 1482, the Arc B390 is simply not designed for 4K gaming.

Across all resolutions, the Medium preset provides the most consistent frame times, as evidenced by the measured minimum and maximum values. At 1080p Medium, the minimum is 74 FPS and the maximum is 100 FPS, a spread of 26 FPS. At 1440p Medium, the minimum is 53 FPS and the maximum is 71 FPS, a spread of 18 FPS. At 4K Medium, the minimum is 33 FPS and the maximum is 44 FPS, a spread of 11 FPS. This tighter variance at higher resolutions suggests the GPU is more consistently saturated, whereas at 1080p there is more headroom for frame rate fluctuations.

GPU Role

The Intel Arc B390 is the dominant factor in this combo’s gaming performance, and its specifications explain why. The GPU is built on Intel’s Xe3-LPG architecture using a 3 nm process, with a base clock of 300 MHz and a boost clock of 2500 MHz. It features 1536 shading units, 48 TMUs, and 24 ROPs, along with 12 ray tracing cores. Its FP32 performance is 7.680 TFLOPS, and its pixel rate is 60.00 GPixel/s. These are modest numbers for a GPU released in 2026, and they place it firmly in the entry-level segment.

The GPU’s memory configuration is a significant limitation. It uses system shared memory, with no dedicated VRAM, no dedicated bus width, and bandwidth that is system dependent. This means the GPU competes with the CPU for memory access, and the 83.2 GB/s dual-channel DDR5 bandwidth of the Ryzen 5 7400F is shared between them. In a game like Downfall, which relies on textures and geometry, this shared memory architecture can cause stuttering and frame drops when memory bandwidth is saturated.

The GPU’s benchmark results are stark: its 3DMark Steel Nomad DX12 score of 1482 places it in the 9th percentile among all GPUs, and its nearest rivals are the NVIDIA GeForce GT 520MX (1463, 1.3% behind) and the GeForce 800M (1460, 1.5% behind). These are ancient parts from the early 2010s, underscoring how far behind the Arc B390 is compared to modern discrete GPUs. The GPU’s TDP is 80 W, and it has a slot width of IGP, confirming it is an integrated solution rather than a discrete card.

In Downfall specifically, the GPU’s limited ROP count (24) and pixel rate (60.00 GPixel/s) directly impact performance at higher resolutions. At 4K, the GPU must fill approximately 8.3 million pixels per frame, and with a pixel rate of 60 GPixel/s, the theoretical maximum fill rate allows for only about 7.2 frames per millisecond of pixel work. The measured 4K results (32 FPS at High, 20 FPS at Ultra) are consistent with a GPU that is fill-rate limited. The 12 ray tracing cores are present but do not appear to provide meaningful benefits in this title, as the frame rates at Ultra settings are substantially lower than at High settings, suggesting that the additional effects tax the shader units and memory bandwidth more than the RT cores.

FAQ

Q: What is the best resolution and settings combo for this system in Downfall?

A: The measured data shows the best experience is at 1920x1080 with Low settings, yielding 106 FPS average. For better visuals, the Medium preset at 1080p delivers 87 FPS average with a 74 FPS minimum, making it the recommended balance of quality and performance.

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

A: Only at Low settings, where it averages 47 FPS. The Medium preset at 4K averages 39 FPS with a 33 FPS minimum, while High drops to 32 FPS and Ultra falls to 20 FPS, making those settings impractical for smooth gameplay.

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

A: The Ryzen 5 7400F has an average benchmark score of 32750, which is 0.1% ahead of the Intel Core i5-14600T (32707) and 0.2% ahead of the Intel Core Ultra 7 155H (32697). It is 0.2% behind the AMD Ryzen 7 PRO 6850H (32812), placing it in the 83rd percentile of all CPUs.

Q: Why is the overall combo rank so low if the CPU is strong?

A: The combo ranks 2589 out of 2928 (bottom 11.6%) primarily because the Intel Arc B390 GPU ranks in the 9th percentile among all GPUs. The GPU’s 3DMark Steel Nomad score of 1482 is comparable to decade-old NVIDIA parts like the GT 710, which severely limits gaming performance despite the CPU’s capability.

Q: Does the GPU have dedicated VRAM?

A: No, the Intel Arc B390 uses system shared memory for both its memory size and type. The memory bus width is also system shared, and bandwidth is system dependent, meaning it relies on the CPU’s dual-channel DDR5 memory with 83.2 GB/s bandwidth.

Q: What is the performance gap between Low and Ultra settings at 1080p?

A: At 1920x1080, the Low preset averages 106 FPS, while Ultra averages 44 FPS, representing a 62 FPS (58.5%) drop. This indicates that the GPU’s 1536 shading units and 24 ROPs are insufficient for the increased visual workload at Ultra settings.