Lockdown Protocol

# Lockdown Protocol with AMD Ryzen 5 8400F + Intel Arc B390

The AMD Ryzen 5 8400F paired with the Intel Arc B390 delivers a playable but constrained experience in Lockdown Protocol, with the GPU acting as the definitive bottleneck across all tested resolutions. The combo ranks 2512 out of 2828 tested configurations, placing it in the bottom 11% of systems. At 1920x1080, the system achieves a maximum average of 88 FPS on Low settings, but drops to 41 FPS on Ultra — a gap that illustrates the GPU's limited headroom. The Arc B390's benchmark percentile sits at 9, meaning it outperforms only about 9% of all GPUs, while the Ryzen 5 8400F sits at the 77th percentile among CPUs. This mismatch is the central story: a strong processor held back by a very weak graphics solution.

FAQ

Q: What is the best resolution for this combo in Lockdown Protocol?

A: The data shows 1920x1080 as the only resolution where the combo reaches consistently playable frame rates. At 1080p Low, the average is 88 FPS; at Medium, 63 FPS; at High, 55 FPS. Moving to 2560x1440 drops the Low setting average to 65 FPS, and at 3840x2160 even Low only manages 42 FPS, indicating that 1080p is the practical ceiling for this pairing.

Q: How does the Intel Arc B390 compare to its nearest GPU rivals?

A: The Arc B390's average benchmark score is 1482, which is 1.3% ahead of the NVIDIA GeForce GT 520MX, 1.5% ahead of the NVIDIA GeForce 800M, 2.5% ahead of the NVIDIA GeForce GT 625 OEM, and 2.7% ahead of the NVIDIA GeForce GT 710. These are all entry-level or legacy mobile parts, positioning the B390 at the very bottom of the desktop GPU hierarchy.

Q: Is the AMD Ryzen 5 8400F the limiting factor in this combo?

A: No. The Ryzen 5 8400F has an average benchmark score of 25005, which is 0.2% higher than the AMD Ryzen 5 7500F, 0.3% higher than the Intel Core i7-11850H, and 0.4% higher than the Intel Core i7-13620H. Its percentile rank of 77 among all CPUs means it is a mid-to-upper tier processor. The GPU's 9th percentile rank is far lower, making the Arc B390 the clear performance ceiling.

Q: What frame rate can I expect at 2560x1440 with Medium settings?

A: The measured data shows an average of 46 FPS at 2560x1440 Medium, with a minimum of 39 FPS and a maximum of 53 FPS. This is the only 1440p preset that stays above 30 FPS on average, but the minimum frame rate suggests occasional dips that could affect gameplay smoothness in a fast-paced FPS.

Q: How does the combo rank among all tested systems?

A: The combo ranks 2512 out of 2828 total tested combinations in Lockdown Protocol. This places it in the lower tier of systems, consistent with the GPU's weak benchmark standing. The CPU's strong relative performance does little to lift the overall ranking because the game's frame rates are predominantly GPU-limited.

Q: Does the Arc B390 support modern graphics APIs needed for this game?

A: Yes. The Intel Arc B390 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. These API support levels are modern and fully capable of running Lockdown Protocol, which is an FPS title released in 2024. The limitation is not API compatibility but raw rendering throughput.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture, manufactured on TSMC's 4 nm process. Its base clock is 4.20 GHz with a boost clock of 4.70 GHz, and it carries a 65 W TDP. The CPU features 16 MB of shared L3 cache, 1 MB of L2 cache per core, and 64 KB of L1 cache per core. It supports DDR5 memory in a dual-channel configuration with a memory bandwidth of 83.2 GB/s, and it connects via PCIe Gen 4 with 20 lanes from the CPU.

In Lockdown Protocol, the CPU's role is to feed the GPU with draw calls, physics calculations, and game logic. The 8400F's single-thread performance is solid — its 3DMark single-thread score is 951, and its Cinebench R23 single-core score is 2943. Its multi-threaded capabilities are also respectable, with a Cinebench R23 multi-core score of 20851 and a 3DMark max-threads score of 6165. These numbers indicate that the CPU can handle the game's thread scheduling and background tasks without becoming a bottleneck at the frame rates this GPU can produce.

The benchmark results show the 8400F performing within 0.4% of several comparable CPUs. It is 0.2% ahead of the AMD Ryzen 5 7500F, 0.3% ahead of the Intel Core i7-11850H, and 0.4% ahead of the Intel Core i7-13620H. It trails the AMD EPYC 9474F by 0.4%, though that is a server-class part. This clustering means the 8400F delivers essentially the same CPU-level performance as its immediate rivals — none of which would meaningfully change the frame rates in this game when paired with the same GPU.

The CPU's 77th percentile ranking among all CPUs confirms that it is not a weak link. At 1080p Low, where the GPU is least stressed, the system reaches 88 FPS average. At 1080p Ultra, the average drops to 41 FPS. If the CPU were the bottleneck, we would expect the frame rate to remain more consistent across settings changes. Instead, the frame rate scales dramatically with GPU load, which points to the graphics card as the primary constraint. The 8400F has ample headroom for this workload; its measured scores suggest it could drive a far more powerful GPU in Lockdown Protocol.

GPU Role

The Intel Arc B390 is an integrated graphics solution based on the Xe3-LPG architecture, built on Intel's 3 nm process. It operates with a base clock of 300 MHz and a boost clock of 2500 MHz, with a TDP of 80 W. The GPU features 1536 shading units, 48 texture mapping units, and 24 raster output units, along with 12 ray tracing cores. Its pixel rate is 60.00 GPixel/s, and its texture rate is 120.0 GTexel/s. The FP32 compute performance is 7.680 TFLOPS, with FP16 at 15.36 TFLOPS (2:1).

Memory is a critical limitation: the Arc B390 uses System Shared memory, meaning it relies on the host system's DDR5 RAM rather than dedicated VRAM. Memory bandwidth is listed as System Dependent, and the bus width is also System Shared. This architecture means the GPU competes with the CPU for memory bandwidth, which can reduce performance in memory-intensive scenarios. The GPU's 3DMark Steel Nomad DX12 score is 1482, and its percentile rank among all GPUs is 9, placing it in the bottom decile.

The benchmark results in Lockdown Protocol reflect this weak standing. At 3840x2160, the GPU manages only 19 FPS on Ultra, 26 FPS on High, 30 FPS on Medium, and 42 FPS on Low. These numbers are uniformly low, indicating that the GPU lacks the raw compute and memory bandwidth to drive 4K resolutions in a modern FPS. At 2560x1440, the situation improves slightly: 30 FPS on Ultra, 40 FPS on High, 46 FPS on Medium, and 65 FPS on Low. The 1440p Medium preset shows a minimum of 39 FPS and a maximum of 53 FPS, suggesting some volatility.

The GPU's nearest rivals in benchmark scores are all NVIDIA parts from a much older generation: the GeForce GT 520MX (1.3% slower), GeForce 800M (1.5% slower), GeForce GT 625 OEM (2.5% slower), and GeForce GT 710 (2.7% slower). These comparisons underscore that the Arc B390, despite being an active product with a 2026 release date, performs at the level of entry-level GPUs from over a decade ago. The 12 ray tracing cores and DirectX 12 Ultimate support are modern features, but they do not translate into competitive frame rates in this game.

Settings Recommendations

The measured FPS data provides a clear hierarchy of settings for each resolution. At 1920x1080, the Low preset delivers an average of 88 FPS, which is the highest frame rate recorded for this combo. Medium drops to 63 FPS, High to 55 FPS, and Ultra to 41 FPS. For a competitive FPS like Lockdown Protocol, the Low preset is the recommended choice because it keeps the average well above 60 FPS, providing the smoothest gameplay experience.

At 2560x1440, the Low preset averages 65 FPS, which is still playable, but Medium drops to 46 FPS with a minimum of 39 FPS. High averages 40 FPS, and Ultra averages 30 FPS. The 1440p Medium setting offers a balance between visual quality and performance, but the minimum frame rate of 39 FPS could cause noticeable stutter during intense action. For users who prioritize smoothness, 1440p Low is the safer option. For those who accept lower frame rates in exchange for better visuals, Medium is viable.

At 3840x2160, no preset achieves a consistently playable frame rate. The Low setting averages 42 FPS, but Medium drops to 30 FPS with a minimum of 25 FPS, High to 26 FPS, and Ultra to 19 FPS. The data indicates that 4K gaming is not practical with this combo, even on the lowest settings. Users with 4K displays should run the game at a lower internal resolution or accept significant performance compromises.

The best overall experience, per the measured rows, is 1920x1080 with the Low preset. This setting configuration yields the highest average frame rate (88 FPS) and avoids the minimum frame rate dips seen at other settings. The jump from Low to Medium at 1080p costs 25 FPS on average (from 88 to 63), which is a substantial penalty for incremental visual gains. Given the GPU's limited capabilities, prioritizing frame rate over visual fidelity is the rational choice.

How This Combo Ranks

The combo ranks 2512 out of 2828 tested combinations in Lockdown Protocol, placing it in the 11th percentile of all tested systems. This ranking is consistent with the GPU's weak benchmark standing; the Arc B390's 9th percentile rank among GPUs heavily influences the overall position. The CPU's 77th percentile rank cannot compensate for a GPU that performs at the level of the NVIDIA GeForce GT 710.

The ranking implies that approximately 89% of tested combos deliver better performance in this game. The data shows why: the frame rates at 1080p High (55 FPS) and 1080p Ultra (41 FPS) are below what many modern systems achieve. The combo's position near the bottom of the distribution is not surprising given the GPU's benchmark scores, which trail even the GeForce GT 520MX by only 1.3% in the 3DMark Steel Nomad test.

The CPU's nearest rivals — the Ryzen 5 7500F, Core i7-11850H, and Core i7-13620H — all have nearly identical average benchmark scores (within 0.4%). Swapping the 8400F for any of these would not change the combo's ranking in a meaningful way because the GPU remains the limiting factor. The ranking is therefore a reflection of the GPU's performance tier rather than any deficiency in the CPU.

For context, the combo's rank of 2512 out of 2828 means it sits above only the bottom 316 tested combinations. This is a low position, but it is not the absolute floor; there are systems that perform worse. The practical takeaway is that this combo is suited for 1080p gaming at low-to-medium settings, with the understanding that higher resolutions and settings will push frame rates below playable thresholds.

Measured FPS Breakdown

At 1920x1080, the combo delivers its best results. The Low preset averages 88 FPS, with no minimum or maximum recorded. The Medium preset averages 63 FPS, with a minimum of 53 FPS and a maximum of 72 FPS. The High preset averages 55 FPS, and the Ultra preset averages 41 FPS. The progression from Low to Ultra shows a steady decline of roughly 23 FPS per step, with the largest single drop occurring between Low and Medium (25 FPS).

At 2560x1440, the frame rates decrease across all settings. The Low preset averages 65 FPS, down 23 FPS from 1080p Low. The Medium preset averages 46 FPS, with a minimum of 39 FPS and a maximum of 53 FPS. The High preset averages 40 FPS, and the Ultra preset averages 30 FPS. The gap between Low and Medium at 1440p is 19 FPS, slightly smaller than at 1080p, but the overall performance level is lower.

At 3840x2160, the combo struggles to maintain playable frame rates. The Low preset averages 42 FPS, the Medium preset averages 30 FPS with a minimum of 25 FPS and a maximum of 34 FPS, the High preset averages 26 FPS, and the Ultra preset averages 19 FPS. The Medium preset's minimum of 25 FPS is particularly problematic, as it indicates frame times that would cause visible stuttering. At 4K, even the Low preset's 42 FPS average is marginal for a fast-paced FPS.

The resolution scaling is steep. From 1080p Low to 1440p Low, the average drops from 88 to 65 FPS, a 26% reduction. From 1440p Low to 4K Low, the average drops from 65 to 42 FPS, a 35% reduction. This scaling pattern is consistent with a GPU that is severely bandwidth and compute limited. The System Shared memory configuration likely exacerbates the performance drop at higher resolutions, as the GPU must compete for memory bandwidth with the CPU.

The only settings that produce a minimum frame rate above 40 FPS are 1080p Medium (53 FPS minimum) and 1080p Low (no minimum recorded, but the 88 FPS average suggests headroom). All other settings have either no recorded minimum or a minimum below 40 FPS, which is generally considered the threshold for acceptable FPS performance. The data clearly indicates that this combo is best utilized at 1080p with Low or Medium settings, where it can maintain frame rates that are responsive enough for the game's shooter mechanics.