Lockdown Protocol

The AMD Ryzen 5 8400F and AMD Radeon RX 6650 XT pairing delivers a solid 1080p and 1440p experience in Lockdown Protocol, but 4K gaming requires significant compromises. This combination of a Zen 4 desktop processor with an RDNA 2 graphics card produces measurable frame rates that scale predictably with resolution and quality settings. The data reveals a system that can comfortably hit high refresh rates at 1080p, maintain smooth gameplay at 1440p, and only struggles when pushed to 4K Ultra settings. Benchmark results indicate the CPU has ample headroom, with the GPU becoming the primary limiting factor at higher resolutions.

Best Settings per Resolution

At 1920x1080, the most demanding preset that stays at or above 60 FPS is Ultra, which delivers an average of 78.3 FPS. This is the maximum quality setting available, and the combo clears the 60 FPS threshold with a comfortable 18.3 FPS margin. The data shows that even at the highest preset, the system has performance to spare for intense firefights or crowded scenes.

At 2560x1440, the best playable preset is High, producing an average of 76.2 FPS. The Ultra preset drops to 57.3 FPS, falling below the 60 FPS playable threshold. Benchmark results indicate that High settings offer the optimal balance, providing 18.9 FPS more headroom than Ultra while still maintaining strong visual quality. Medium settings achieve 85.8 FPS, but High is the most demanding preset that clears the threshold.

At 3840x2160, only Low settings maintain playable performance, with an average of 77.9 FPS. Medium drops to 54.4 FPS, and High falls to 51.1 FPS, both below the 60 FPS threshold. Ultra is effectively unplayable at 36.9 FPS. The data indicates that 4K gaming requires a significant quality sacrifice, as the GPU cannot sustain high-fidelity rendering at this resolution.

CPU and GPU Roles

The performance scaling between resolutions reveals a clear division of labor. At 1920x1080, the GPU is the primary bottleneck, as evidenced by the massive frame rate jump from Ultra (78.3 FPS) to Low (168.7 FPS) — a 90.4 FPS difference. The CPU, with its 6 cores and 12 threads, provides enough processing power to feed the GPU at lower resolutions where pixel throughput is less demanding.

At 2560x1440, the balance shifts slightly toward the GPU. The spread between Low (124.3 FPS) and Ultra (57.3 FPS) narrows to 67 FPS, indicating that the GPU's rendering workload is becoming more significant. The Ryzen 5 8400F's single-thread performance, evidenced by its 3dmark_single_thread score of 951, becomes less critical as resolution increases and frame rates drop.

At 3840x2160, the GPU dominates the performance equation completely. The difference between Low (77.9 FPS) and Ultra (36.9 FPS) is 41 FPS, and even the fastest preset struggles to maintain high frame rates. The CPU's 3dmark_max_threads score of 6165 shows it has processing headroom, but the RX 6650 XT's 8 GB of GDDR6 memory and 280.3 GB/s bandwidth become the limiting factors. The data suggests that at 4K, the GPU's 10.79 TFLOPS of compute performance is insufficient for high settings, while the CPU remains underutilized.

Measured FPS Breakdown

1920x1080:

• Low: 168.7 FPS average
• Medium: 116.9 FPS average
• High: 105.2 FPS average
• Ultra: 78.3 FPS average

The progression from Low to Ultra shows a consistent 42.6 FPS drop between Low and Medium, followed by an 11.7 FPS drop to High, and a 26.9 FPS drop to Ultra. The largest single-step decline occurs between Medium and Ultra, indicating that the Ultra preset introduces disproportionately heavy rendering effects.

2560x1440:

• Low: 124.3 FPS average
• Medium: 85.8 FPS average
• High: 76.2 FPS average
• Ultra: 57.3 FPS average

At 1440p, the frame rate scaling follows a similar pattern but with amplified penalties. The drop from Low to Medium is 38.5 FPS, Medium to High is 9.6 FPS, and High to Ultra is 18.9 FPS. The data shows that Ultra at 1440p costs 67 FPS compared to Low, nearly halving the performance.

3840x2160:

• Low: 77.9 FPS average
• Medium: 54.4 FPS average
• High: 51.1 FPS average
• Ultra: 36.9 FPS average

The 4K results show severe performance degradation at higher presets. Low to Medium drops 23.5 FPS, Medium to High drops 3.3 FPS, and High to Ultra drops 14.2 FPS. The small difference between Medium and High suggests the GPU is hitting a rendering bottleneck that additional quality settings do not substantially worsen until the Ultra preset pushes past a critical threshold.

How This Combo Ranks

This combination ranks 2293rd out of 3714 tested combos in Lockdown Protocol, placing it in the lower-middle tier of all configurations. The percentile placement reflects the RX 6650 XT's 65th percentile ranking among all GPUs, which is the dominant component for this game's performance. The CPU's 77th percentile ranking among all processors shows it is a stronger component relative to the GPU, but the combination's overall rank is dragged down by graphics limitations at higher resolutions.

The GPU's nearest rivals show tight clustering: the NVIDIA Tesla K40m scores 0.6% lower, while the AMD FirePro D300 scores 0.7% higher. This indicates the RX 6650 XT sits in a competitive performance band where small differences separate adjacent products. The CPU side shows similar density, with the AMD Ryzen 5 7500F just 0.2% higher and the Intel Core i7-11850H 0.3% higher, suggesting the 8400F is well-matched with its immediate competitors.

The combo rank of 2293 suggests that while this system is not a top-tier performer, it is far from the bottom of the pack. Benchmark results indicate that the pairing is balanced for 1080p and 1440p gaming, but the 8 GB VRAM and 128-bit memory bus of the GPU prevent it from competing with higher-end configurations at 4K.

FAQ

*Q: Can this PC run Lockdown Protocol at 1080p with maximum settings?*

A: Yes. The Ultra preset at 1920x1080 delivers an average of 78.3 FPS, which exceeds the 60 FPS playable threshold by 18.3 FPS.

Q: What is the best 1440p setting for this combo?

A: High settings at 2560x1440 produce an average of 76.2 FPS, making it the most demanding preset that stays above the 60 FPS threshold. Ultra drops to 57.3 FPS, below the playable mark.

Q: Is 4K gaming viable with the RX 6650 XT?

A: Only at Low settings, which achieve 77.9 FPS at 3840x2160. Medium (54.4 FPS), High (51.1 FPS), and Ultra (36.9 FPS) all fall below the 60 FPS playable threshold.

Q: How does the Ryzen 5 8400F compare to its nearest CPU rival?

A: The 8400F scores 0.2% lower than the AMD Ryzen 5 7500F in average benchmark scores, with a 0.2% deltaPct difference. It also trails the Intel Core i7-13620H by 0.4%.

Q: Does the CPU or GPU bottleneck this game more?

A: The GPU is the primary bottleneck at all resolutions. The CPU's 77th percentile ranking exceeds the GPU's 65th percentile, and frame rates drop more sharply with GPU-heavy settings increases than with resolution changes.

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

A: The difference is 90.4 FPS, from 168.7 FPS at Low to 78.3 FPS at Ultra. This represents a 53.6% performance reduction when enabling maximum quality settings.

The Verdict

This PC can run Lockdown Protocol effectively at 1080p and 1440p, with clear limitations at 4K. The verdict by resolution shows 1920x1080 supports all four presets — Low, Medium, High, and Ultra — with the best playable setting being Ultra at 78.3 FPS. At 2560x1440, the system handles Low, Medium, and High settings, with High achieving 76.2 FPS as the optimal choice. Only at 3840x2160 does the system struggle, with Low settings alone reaching playable performance at 77.9 FPS.

The data confirms this is a capable 1080p and 1440p gaming machine. The Ryzen 5 8400F provides sufficient processing power, ranking in the 77th percentile among all CPUs, while the RX 6650 XT delivers the graphical muscle needed for high-refresh-rate gaming at mainstream resolutions. For players targeting 60 FPS or higher, the system excels at 1080p with all settings maxed and at 1440p with High quality. The 4K results are the only weak point, requiring a significant drop to Low settings to maintain playability. Overall, this combo represents a well-balanced pairing for competitive FPS gaming at typical monitor resolutions, with the GPU acting as the limiting factor for any future resolution upgrades.