Downfall

Resolution Scaling

The measured frame rates for this AMD Ryzen 5 8400F and Radeon RX 6650 XT combination in Downfall show a pronounced dependency on resolution. At 1080p with Low settings, the combo produces 197.6 FPS, which drops to 142.8 FPS at 1440p and further to 90.8 FPS at 4K. This progression represents a 54% reduction from 1080p to 4K at Low settings, indicating that the GPU is the primary scaling factor as pixel count increases.

Moving to Medium settings, the pattern continues: 160.9 FPS at 1080p, 115.2 FPS at 1440p, and 74.3 FPS at 4K. The drop from 1080p to 1440p is 28%, while the drop from 1440p to 4K is 36%. This steeper decline at higher resolutions suggests the graphics card's 8 GB memory buffer and 128-bit bus become more stressed as the rendering load grows. At High settings, the frame rates are 136.6 FPS, 94.3 FPS, and 56.9 FPS respectively, with the 4K figure falling below the 60 FPS threshold that many users target for smooth gameplay.

Ultra settings amplify the resolution sensitivity dramatically. The combo manages 83.7 FPS at 1080p, 61 FPS at 1440p, and only 35.7 FPS at 4K. The 1440p result is just barely playable, while the 4K result represents a 57% drop from the 1080p figure. This behavior points to the GPU being the limiting component at higher resolutions and settings, since the CPU's role diminishes as the pixel workload grows. The data shows that the RX 6650 XT, with its 2055 MHz base and 2635 MHz boost clocks, cannot sustain high frame rates at 4K when visual complexity increases.

How This Combo Ranks

In the full database of tested combinations for Downfall, this pairing of the Ryzen 5 8400F with the Radeon RX 6650 XT achieves a rank of 1105 out of 1741 tested combos. This places it in the lower-middle portion of the field, meaning roughly 63% of all tested combinations deliver higher average frame rates in this game. The ranking reflects the balance between the CPU's 82nd percentile standing among all processors and the GPU's 72nd percentile among all graphics cards.

The CPU's average benchmark score of 25064 places it alongside the AMD Ryzen 7 2700X, which scores 25057 with a 0% delta, and the AMD Ryzen 5 7500F at 24993 with a 0.3% delta. This suggests the processor is not the bottleneck in most scenarios. The GPU, with an average benchmark score of 29024, sits near the AMD Radeon RX 6800M at 29011 with a 0% delta and the AMD Radeon RX 470 at 28996 with a 0.1% delta. These rival comparisons show the RX 6650 XT is performing as expected for its class, neither overachieving nor underperforming relative to its benchmark peers.

Given that the combo ranks at 1105 out of 1741, the data indicates that while individual components are competent on their own, their combined performance in Downfall places them in the middle of the pack. The 4K Ultra result of 35.7 FPS and the 1080p Ultra result of 83.7 FPS illustrate the range of experiences possible depending on resolution and settings choices.

GPU Role

The Radeon RX 6650 XT is built on the RDNA 2.0 architecture with the Navi 23 chip, manufactured on a 7 nm process by TSMC. It features 2048 shading units, 128 texture mapping units, and 64 render output units, along with 32 ray tracing cores. The card's memory configuration consists of 8 GB of GDDR6 on a 128-bit bus, providing 280.3 GB/s of bandwidth. This memory subsystem is critical for Downfall's performance at higher resolutions, as the 4K Ultra result of 35.7 FPS suggests the frame buffer and bandwidth constraints become evident.

Clock speeds are substantial: the base clock runs at 2055 MHz, the game clock at 2410 MHz, and the boost clock reaches 2635 MHz. The memory operates at 2190 MHz, which translates to 17.5 Gbps effective. These clocks contribute to the card's compute capabilities of 10.79 TFLOPS FP32 and 21.59 TFLOPS FP16. The pixel rate of 168.6 GPixel/s and texture rate of 337.3 GTexel/s provide context for how quickly the card can fill frames and apply textures.

The GPU's benchmark scores show its DirectX performance: DirectX 11 scores 169, DirectX 12 scores 62, and DirectX 9 scores 215. The PassMark G3D score of 17166 and GPU compute score of 7532 further quantify its capabilities. The card's 72nd percentile ranking among all GPUs, with an average benchmark score of 29024, places it near the AMD Radeon RX 6800M and AMD Radeon RX 470, with deltas of 0% and 0.1% respectively. These figures indicate the GPU performs consistently with its peer group, though Downfall's specific demands at Ultra settings push it to its limits.

Measured FPS Breakdown

At 1920x1080, the combination delivers its highest frame rates across all settings. Low settings produce 197.6 FPS, Medium settings yield 160.9 FPS, High settings achieve 136.6 FPS, and Ultra settings drop to 83.7 FPS. The progression from Low to Ultra represents a 58% reduction in frame rate, demonstrating the significant cost of higher visual fidelity at this resolution.

At 2560x1440, the frame rates are 142.8 FPS for Low, 115.2 FPS for Medium, 94.3 FPS for High, and 61 FPS for Ultra. The 1440p Ultra result is noteworthy because it sits exactly at the 60 FPS mark, making it a borderline playable experience. The gap between Low and Ultra at this resolution is 57%, similar to the 1080p scaling.

At 3840x2160, the results are 90.8 FPS for Low, 74.3 FPS for Medium, 56.9 FPS for High, and 35.7 FPS for Ultra. The 4K High result falls below 60 FPS, and the 4K Ultra result is significantly below playable thresholds for most users. The drop from 1080p Low to 4K Low is 54%, while the drop from 1080p Ultra to 4K Ultra is 57%, showing consistent scaling behavior across settings levels.

Settings Recommendations

Based on the measured data, the optimal experience depends on the target resolution and desired frame rate. At 1080p, Ultra settings at 83.7 FPS provide a fully playable experience with maximum visual quality. This is the recommended configuration for users with 1080p displays who prioritize image fidelity, as the frame rate remains well above the 60 FPS threshold.

At 1440p, the situation becomes more nuanced. Ultra settings at 61 FPS are technically playable but leave little headroom for demanding scenes. High settings at 94.3 FPS offer a more comfortable margin while still delivering strong visual quality. For users who prefer smoother motion, Medium settings at 115.2 FPS represent a good balance, while Low settings at 142.8 FPS maximize frame rate for competitive play or high-refresh-rate displays.

At 4K, the recommendations shift dramatically. Low settings at 90.8 FPS are the only configuration that provides a comfortable frame rate. Medium settings at 74.3 FPS are acceptable, but High settings at 56.9 FPS fall below 60 FPS, and Ultra settings at 35.7 FPS are not recommended for serious gameplay. The data shows that 4K users should stick to Low or Medium settings to maintain playable frame rates with this combination.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture with the Phoenix codename. It operates at a base clock of 4.20 GHz and a boost clock of 4.70 GHz, with a 65 W TDP. The processor is manufactured on a 4 nm process by TSMC, featuring 25,000 million transistors on a 178 mm² die. Cache configuration includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache.

The CPU's benchmark results show strong single-thread and multi-thread performance. Cinebench R23 scores are 2943 for single-core and 20851 for multi-core. The 3DMark scores scale from 951 for single-thread to 6165 for max threads, with 6091 for 16 threads. PassMark results include a single-thread score of 3684 and a multithread score of 24530. The processor's 82nd percentile ranking among all CPUs, with an average benchmark score of 25064, places it near the AMD Ryzen 7 2700X and AMD Ryzen 5 7500F.

In Downfall, the CPU's role appears secondary to the GPU at higher resolutions, as evidenced by the consistent frame rate drops when resolution increases. The processor's 6 cores and 12 threads, combined with its high boost clock of 4.70 GHz, are sufficient to feed the GPU at 1080p, where frame rates reach nearly 200 FPS on Low settings. The CPU's 16 MB of L3 cache and dual-channel DDR5 memory support with 83.2 GB/s bandwidth provide adequate data throughput for the game's demands. Given the combo's rank of 1105 out of 1741, the CPU is not holding back the GPU in most scenarios, but the overall combination sits in the middle of the tested field.