Rust

Resolution Scaling

The measured FPS data for Rust with the Intel Core i5-12600KF and Intel Arc B390 reveals a steep performance cliff as resolution increases, with the scaling pattern strongly indicating that the graphics subsystem is the primary bottleneck. At 1080p Low, the combo delivers 76 FPS average, but stepping up to 1440p Low drops that to 53 FPS, a 30% reduction. Pushing further to 4K Low yields just 31 FPS, which is a 59% loss from the 1080p figure. This aggressive decline is characteristic of a GPU that is saturated well before the CPU's potential is reached.

The pattern holds across all settings presets. At High settings, the averages are 43 FPS at 1080p, 30 FPS at 1440p, and 18 FPS at 4K — each resolution step costs roughly 12-13 FPS, which is a nearly linear degradation. Medium settings show 51 FPS at 1080p, 35 FPS at 1440p, and 21 FPS at 4K, with the 1440p to 4K transition again representing the steepest drop. Ultra settings are the most punishing, with 33 FPS at 1080p falling to 23 FPS at 1440p and finally 13 FPS at 4K.

The fact that even the lowest settings preset cannot maintain playable frame rates at 4K — 31 FPS — is a definitive sign that the Intel Arc B390's rendering capabilities are exhausted early. The GPU's 3DMark Steel Nomad DX12 score of 1482 places it in the 9th percentile of all GPUs, and its nearest rivals include the NVIDIA GeForce GT 520MX and GT 710, both of which are entry-level parts from previous generations. Benchmark results indicate that the Arc B390 is fundamentally a low-throughput part, and the resolution scaling data confirms that Rust's pixel-pushing demands quickly outstrip its 24 ROPs and 7.680 TFLOPS of FP32 compute.

The CPU, by contrast, shows no signs of being the limiting factor in this scaling behavior. The i5-12600KF's 3DMark max-threads score of 7952 and single-thread score of 1016 suggest ample headroom for a game like Rust, which is known to be sensitive to single-core performance. The measured FPS deltas between resolutions are too large and too consistent to be explained by CPU limitations; they align with what would be expected from a GPU that is rendering at progressively heavier fill rates. The data clearly points to the Arc B390 as the component that dictates the performance ceiling across all tested configurations.

CPU Role

The Intel Core i5-12600KF brings a 10-core, 16-thread configuration based on the Alder Lake architecture, with a base clock of 3.70 GHz and a boost clock of 4.90 GHz. The processor's benchmark results show strong multithreaded performance — a Cinebench R23 multicore score of 23391 and a Geekbench multicore score of 12137 — alongside competitive single-thread numbers, with a Cinebench R23 single-core score of 3302 and a 3DMark single-thread score of 1016. These figures place the CPU in the 79th percentile of all processors, with its average benchmark score of 27799 sitting within 0.3% of rivals like the Intel Core i9-10900K and AMD Ryzen 7 5800X3D.

In Rust, the CPU's role is largely to feed the GPU with draw calls and handle game logic, and the measured FPS data suggests that the i5-12600KF is more than adequate for this task. The 1080p Low result of 76 FPS average is the highest figure recorded across all tested rows, and the fact that this number does not improve at lower resolutions (there are no lower resolutions tested) implies that the CPU is not the ceiling here. If the processor were the bottleneck, we would expect to see similar FPS numbers regardless of resolution — but instead, the averages fall consistently as resolution rises, which is the signature of a GPU-limited scenario.

The CPU's 20 MB of shared L3 cache and dual-channel memory support (both DDR4 and DDR5) provide solid fundamentals for a game that can be memory-bandwidth sensitive. The 3DMark 16-thread score of 7956 versus the max-threads score of 7952 indicates that all 16 threads are being utilized effectively, and the PassMark multithread score of 27575 confirms strong parallel throughput. However, none of these strengths translate into higher frame rates in Rust when paired with the Arc B390 because the GPU simply cannot keep up. The data shows that the CPU's capabilities are effectively masked by the graphics bottleneck, and any analysis of this combo must recognize that the processor is operating well within its limits.

GPU Role

The Intel Arc B390 is the decisive factor in this combo's performance, and its specifications paint a clear picture of why. This integrated graphics part, based on the Xe3-LPG architecture on a 3 nm process, features 1536 shading units, 48 texture mapping units, and just 24 ROPs. The boost clock of 2500 MHz yields a pixel rate of 60.00 GPixel/s and a texture rate of 120.0 GTexel/s, with FP32 performance of 7.680 TFLOPS. The GPU's 3DMark Steel Nomad DX12 score of 1482 places it in the 9th percentile of all GPUs, and its nearest rivals are the NVIDIA GeForce GT 520MX (score 1463, 1.3% slower) and the GeForce 800M (score 1460, 1.5% slower). These comparisons are damning — the Arc B390 is competing with decade-old entry-level mobile parts.

In Rust, the GPU's limitations manifest immediately. At 1080p Low, the combo manages 76 FPS, which is playable but far from smooth for a competitive survival game. Moving to 1080p Medium drops the average to 51 FPS, and High settings yield 43 FPS. The Ultra preset at 1080p delivers just 33 FPS, which is below the threshold for comfortable gameplay. The GPU's memory configuration — System Shared with System Dependent bandwidth — means that it relies on the host system's memory, which can introduce additional latency and bandwidth constraints. The 24 ROPs are a particular concern for a game like Rust, which relies heavily on fill-rate-bound effects like shadows and terrain rendering.

The Arc B390's 12 ray tracing cores are present but largely irrelevant at these performance levels, as the base rasterization throughput is insufficient to maintain frame rates. The data indicates that this GPU is fundamentally mismatched with a game that demands consistent 60+ FPS for a good experience. Even the best-case scenario — 1080p Low at 76 FPS — leaves no headroom for dips, and the Medium preset's minimum FPS of 44 at 1080p shows that the GPU can stutter under load. The verdict is unambiguous: the Arc B390 is the sole limiting component in this pairing.

Measured FPS Breakdown

The measured data provides twelve distinct performance points across three resolutions and four settings presets. At 3840x2160, the results are uniformly poor: Low settings average 31 FPS, Medium averages 21 FPS with a minimum of 18 and maximum of 24, High averages 18 FPS, and Ultra averages 13 FPS. None of these 4K results approach playable frame rates, and even the Low preset falls far short of the 60 FPS target that most players expect.

At 2560x1440, the situation improves but remains marginal. Low settings yield 53 FPS average, which is the only 1440p result above 50 FPS. Medium averages 35 FPS with a range of 30 to 41, High averages 30 FPS, and Ultra averages 23 FPS. The 1440p results suggest that players could theoretically use Low settings for a playable experience, but the margin is thin, and any complex scene could easily push the frame rate below acceptable levels.

At 1920x1080, the combo shows its best results. Low settings average 76 FPS, which is the highest number in the entire dataset. Medium averages 51 FPS with a minimum of 44 and maximum of 59, so the minimum is still below 60. High averages 43 FPS, and Ultra averages 33 FPS. The 1080p Low result is the only configuration that reliably stays above 60 FPS, and even that is at the lowest possible graphical quality. The Medium preset's 44 FPS minimum indicates that frame pacing can be inconsistent, which is problematic for a survival game where quick reactions matter.

The progression across settings is consistent: each step from Low to Medium to High to Ultra costs roughly 15-20% performance at a given resolution, with the Ultra preset being particularly punishing relative to High. The 4K Ultra result of 13 FPS is effectively unplayable, and the 13 FPS average suggests that the GPU is completely overwhelmed. The data shows a clear hierarchy: 1080p Low is the only viable configuration, 1080p Medium and 1440p Low are borderline, and everything else is below acceptable thresholds.

How This Combo Ranks

The Intel Core i5-12600KF and Intel Arc B390 combination ranks 2601 out of 2953 tested combos in Rust, placing it in the bottom 12% of all configurations. This ranking is a direct consequence of the GPU's weak performance — the CPU alone would rank far higher, as evidenced by its 79th percentile standing among all processors. The combo's position in the database reflects the severe bottleneck created by the Arc B390, which drags the entire system down despite the i5-12600KF's solid benchmark credentials.

Comparing the GPU to its nearest rivals in the database makes the ranking even more telling. The Arc B390's 3DMark Steel Nomad score of 1482 is just 1.3% higher than the GeForce GT 520MX's 1463, and 2.7% higher than the GeForce GT 710's 1443. These are GPUs that were entry-level offerings at their respective launches, and they are now over a decade old. The fact that the Arc B390 sits alongside them in the benchmarks underscores its position at the very bottom of the GPU performance spectrum. The combo rank of 2601 out of 2953 means that for Rust specifically, this pairing performs worse than roughly 88% of all tested combinations, which aligns with the GPU's 9th percentile ranking.

The CPU's nearest rivals provide context for what the processor could achieve with a more capable GPU. The i5-12600KF's average benchmark score of 27799 is within 0.3% of the Intel Core i9-10900K (27872), the AMD Ryzen 7 5800X3D (27896), and the AMD Ryzen 7 6800U (27887), with only the Ryzen 5 8500GE (27712) slightly behind. This indicates that the CPU is competitive with high-end processors from recent generations, yet the combo's ranking in Rust is dragged down entirely by the GPU. The data suggests that pairing this CPU with a mid-range discrete GPU would yield dramatically better results, but as configured, the system's overall standing in Rust is firmly in the bottom tier.

Settings Recommendations

Based on the measured FPS data, the only configuration that provides a consistently playable experience is 1080p with Low settings, which delivers 76 FPS average. This is the sole result that exceeds the 60 FPS threshold, and it does so with enough margin to accommodate some scene complexity. For players who prioritize smooth gameplay over visual fidelity, this is the recommended preset. The 1080p Medium preset, with its 51 FPS average and 44 FPS minimum, is a borderline option — it will be playable in less demanding areas but may stutter in busy scenes with multiple players or large bases.

At 1440p, Low settings at 53 FPS average is the only option that approaches playability, but it falls short of 60 FPS and leaves no headroom for dips. The 1440p Medium result of 35 FPS is below acceptable thresholds for a survival game where responsiveness matters. All 4K settings are effectively unusable, with the best result being 31 FPS at Low settings — this is below the minimum for a smooth experience and would be frustrating in combat situations.

The data indicates that players should avoid High and Ultra presets entirely at any resolution. Even at 1080p, High settings drop to 43 FPS and Ultra falls to 33 FPS, both of which are below the 60 FPS target. The performance gap between Low and Medium at 1080p is 25 FPS (76 vs 51), which is substantial, while the gap between Medium and High is just 8 FPS (51 vs 43), suggesting diminishing returns as settings increase. For the best experience per the measured rows, 1080p Low is the clear winner, with 1080p Medium as a secondary option for those who accept some frame rate instability in exchange for improved visuals. The Arc B390 simply does not have the throughput to handle higher resolutions or quality presets in Rust, and players should configure their expectations accordingly.