Rust

Resolution Scaling

The measured frame rates for Rust on this Intel Core Ultra 7 270K Plus and Intel Arc B390 combination show a steep and consistent decline as resolution increases, which is a clear indicator of where the performance bottleneck lies. At 1080p with Low settings, the combo produces 76 FPS average. Stepping up to 1440p Low drops that figure to 53 FPS, a reduction of roughly 30%. Moving to 2160p Low yields 31 FPS, which is another 41% drop from the 1440p result. This pattern is not subtle; it is a near-linear scaling penalty that points directly at the graphics subsystem being the limiting factor rather than the processor.

The same trend holds across every settings preset. At High settings, the average frame rate falls from 43 FPS at 1080p to 30 FPS at 1440p, and then to 18 FPS at 2160p. Medium settings follow the same path: 51 FPS at 1080p, 35 FPS at 1440p, and 21 FPS at 2160p. Even at Ultra, which is the most demanding preset measured, the decline is consistent: 33 FPS at 1080p, 23 FPS at 1440p, and 13 FPS at 2160p. The uniformity of these drops across all four presets suggests that resolution scaling is independent of the visual complexity settings, which is typical of a system where the GPU is saturated well before the CPU can become a factor.

The 4K results are particularly telling. At 2160p, even the Low preset only manages 31 FPS, and the Ultra preset falls to 13 FPS. These numbers are below playable thresholds for most users, and they confirm that the Arc B390, which is an integrated graphics solution with system-shared memory, is not equipped to handle 4K rendering in Rust under any preset. The data shows that the delta between 1080p and 2160p is substantial across the board, with the Low preset losing 45 FPS and the High preset losing 25 FPS. This is not a case where the CPU is holding back performance at higher resolutions; rather, the GPU's fill rate and memory bandwidth constraints become more pronounced as pixel count increases.

For reference, the GPU's 3DMark Steel Nomad DX12 score is 1482, which places it in the 9th percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce GT 520MX (score 1463, delta 1.3%) and the GeForce GT 710 (score 1443, delta 2.7%). These are entry-level parts from previous generations, and the benchmark results here align with that positioning. The scaling behavior in Rust is exactly what one would expect from a component in this performance tier: playable at 1080p with reduced settings, marginal at 1440p, and effectively unusable at 4K.

CPU Role

The Intel Core Ultra 7 270K Plus is a high-end desktop processor with 24 cores and 24 threads, a base clock of 3.70 GHz, and a boost clock of 5.50 GHz. It is built on a 3 nm process and features 36 MB of shared L3 cache, with 192 KB of L1 cache per core and 3 MB of L2 cache per core. The processor supports DDR5 memory in a dual-channel configuration, providing 115.2 GB/s of memory bandwidth. It also includes ECC memory support and is designed for the Intel Socket 1851 platform.

In synthetic benchmarks, this CPU performs exceptionally well. Its Cinebench R23 multi-core score is 44253, and its single-core score is 2439. The PassMark multi-thread score is 68574, with a single-thread score of 5068. The processor's average benchmark score is 93785, placing it in the 96th percentile of all CPUs. Its nearest rivals in the database are the Intel Xeon 6520P (avg score 93786, delta 0%), the AMD EPYC 4564P (avg score 95183, delta -1.5%), the AMD EPYC 9175F (avg score 95615, delta -1.9%), and the AMD EPYC 4565P (avg score 95764, delta -2.1%). These are all server-class parts, which underscores the 270K Plus's positioning as a top-tier desktop chip.

Despite this formidable processing power, the measured FPS in Rust does not reflect any CPU limitation. The frame rates are uniformly low across all resolutions and settings, and they scale almost entirely with the graphics workload. This indicates that the CPU is not the bottleneck in this configuration. The 270K Plus has ample headroom to feed frames to the GPU, but the Arc B390 simply cannot keep up with the rendering demands. The data shows that even at 1080p Low, where the CPU would typically have the most influence, the 76 FPS average is well below what this processor is capable of supporting in less GPU-bound scenarios.

The CPU's high core count and clock speeds are irrelevant to the final frame rate here because the GPU is overwhelmed. Rust is a game that can be CPU-intensive in certain scenarios, particularly with many entities or complex base structures, but the measured results do not show any such limitation. The bottleneck is firmly on the graphics side, and the CPU's role in this combo is to provide a stable platform without introducing stutter or frame pacing issues. The lack of any min FPS data for most settings (only Medium presets have min/max values) suggests that the system is not experiencing severe frame drops from CPU-side hitches.

GPU Role

The Intel Arc B390 is an integrated graphics processor based on the Xe3-LPG architecture, manufactured on a 3 nm process by Intel. It has 1536 shading units, 48 texture mapping units, and 24 raster operation units, along with 12 ray tracing cores. The base clock is 300 MHz, and the boost clock is 2500 MHz. Its memory is system-shared, meaning it uses the host's DDR5 RAM rather than dedicated VRAM, with bandwidth described as system-dependent. The GPU's pixel rate is 60.00 GPixel/s, and its texture rate is 120.0 GTexel/s, with FP32 performance of 7.680 TFLOPS.

The Arc B390's 3DMark Steel Nomad DX12 score is 1482, which places it in the 9th percentile of all GPUs. Its nearest rivals are the NVIDIA GeForce GT 520MX (score 1463, delta 1.3%), the NVIDIA GeForce 800M (score 1460, delta 1.5%), the NVIDIA GeForce GT 625 OEM (score 1446, delta 2.5%), and the NVIDIA GeForce GT 710 (score 1443, delta 2.7%). These are all very old or very low-end parts, and the Arc B390 sits just above them in terms of raw compute. This is a fundamental constraint that no amount of CPU power can overcome.

The GPU's system-shared memory is a significant factor in Rust's performance. The game requires substantial memory bandwidth for texture streaming and world data, and sharing the system's DDR5 memory with the CPU creates contention. The measured FPS shows that at 1080p Low, the combo achieves 76 FPS, which is the highest result in the entire dataset. This is likely because Low settings reduce texture sizes and draw distances, minimizing the memory bandwidth pressure. At Medium settings, the average drops to 51 FPS at 1080p, and at High it falls to 43 FPS. At Ultra, it drops to 33 FPS. This progression shows that the GPU's compute and memory resources are quickly exhausted as visual quality increases.

The 1440p and 2160p results confirm that the Arc B390 is not suited for higher resolutions. At 1440p, even Low settings only produce 53 FPS, and at 2160p, Low drops to 31 FPS. The Ultra preset at 2160p yields just 13 FPS. These numbers are well below the thresholds for acceptable gameplay, and they highlight the GPU's inability to handle the pixel throughput required at these resolutions. The GPU's 24 ROPs and 48 TMUs are simply too few for modern game resolutions, and the system-shared memory bandwidth cannot keep up with the demands of Rust's open-world environment.

FAQ

Q: What is the best resolution to play Rust with this combo?

A: Based on the measured FPS, 1080p is the only resolution where the frame rates are consistently above 30 FPS across all settings. The Low preset at 1080p delivers 76 FPS average, while Ultra at 1080p still manages 33 FPS. At 1440p, only Low settings (53 FPS) exceed 30 FPS, and at 2160p, all presets fall below 31 FPS.

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

A: The Arc B390's 3DMark Steel Nomad score is 1482, which is 1.3% higher than the NVIDIA GeForce GT 520MX (score 1463), 1.5% higher than the GeForce 800M (score 1460), 2.5% higher than the GeForce GT 625 OEM (score 1446), and 2.7% higher than the GeForce GT 710 (score 1443). This places it just above these entry-level parts in the 9th percentile of all GPUs.

Q: Is the CPU or GPU the limiting factor in this system?

A: The GPU is the clear limiting factor. The CPU has a PassMark multi-thread score of 68574 and a Cinebench R23 multi-core score of 44253, placing it in the 96th percentile of all CPUs. However, the measured FPS scales almost exclusively with resolution and settings, which indicates the Arc B390 cannot keep up with the rendering workload regardless of the CPU's capabilities.

Q: What frame rate can I expect at 1440p with Medium settings?

A: The measured data shows 35 FPS average at 1440p Medium, with a minimum of 30 FPS and a maximum of 41 FPS. This is marginally playable but may feel inconsistent during busy scenes. For a smoother experience, the Low preset at 1440p offers 53 FPS average.

Q: Does the Arc B390 have dedicated VRAM?

A: No, the GPU uses system-shared memory. The memory size, type, and bus width are all listed as "System Shared," and the bandwidth is described as "System Dependent." This means the GPU relies on the same DDR5 memory as the CPU, which can create contention and reduce performance compared to a dedicated VRAM solution.

Q: How does this combo rank among all tested combinations in Rust?

A: The combo ranks 2601 out of 2953 tested combinations in Rust. This places it in the bottom 12% of all combos, which is consistent with the low GPU performance percentile and the measured frame rates across all resolutions and settings.

How This Combo Ranks

The Intel Core Ultra 7 270K Plus and Intel Arc B390 combination ranks 2601 out of 2953 tested combos in Rust. This is a low ranking, placing the system in the bottom 12% of all configurations tested in this game. The ranking is heavily influenced by the GPU's poor performance relative to other graphics cards in the database. The Arc B390 sits in the 9th percentile of all GPUs, and its nearest rivals are all legacy or low-end parts from NVIDIA.

The CPU, by contrast, is a top-tier processor. Its 96th percentile ranking among all CPUs means it outperforms the vast majority of processors in the database. However, this strength does not translate into a high combo ranking because Rust's performance in this configuration is entirely GPU-bound. The data supports this interpretation: the measured FPS values are uniformly low and scale with resolution and settings in a way that is characteristic of a graphics bottleneck.

The rank of 2601 out of 2953 suggests that most other tested combos deliver better frame rates in Rust, even if they have weaker CPUs. This is because a balanced system with a mid-range GPU and a modest CPU will typically outperform a system with a flagship CPU and an integrated GPU in a graphically demanding title like Rust. The high CPU score is essentially wasted in this configuration, as the GPU cannot utilize the available processing power.

For context, the CPU's nearest rivals in the database are all server processors (Intel Xeon 6520P, AMD EPYC 4564P, etc.), which further illustrates the mismatch between the CPU's compute capability and the GPU's rendering capability. The combo rank reflects the overall gaming experience, and in this case, the experience is constrained by the GPU to the point where the CPU's advantages are irrelevant.

Settings Recommendations

Given the measured data, the optimal settings for this combo depend on the user's priority for frame rate versus visual fidelity. At 1080p, the Low preset delivers 76 FPS average, which is the highest measured result in the entire dataset. This is the only setting that approaches a smooth 60+ FPS experience, and it is recommended for any user who prioritizes responsiveness. The Medium preset at 1080p offers 51 FPS average, which is still playable but with a noticeable drop in smoothness. High and Ultra at 1080p yield 43 FPS and 33 FPS respectively, which are borderline but may be acceptable for users who prefer visuals over frame rate.

At 1440p, the Low preset is the only viable option, with 53 FPS average. Medium drops to 35 FPS, High to 30 FPS, and Ultra to 23 FPS. The Medium preset's minimum of 30 FPS and maximum of 41 FPS indicate some variability, which could be distracting. For a consistent experience at 1440p, Low is recommended. At 2160p, no preset achieves a playable frame rate. The Low preset's 31 FPS is the best result, but it is still below the generally accepted 30 FPS minimum for smooth gameplay, and the Ultra preset's 13 FPS is essentially a slideshow.

The data suggests that 1080p Low is the sweet spot for this combo in Rust. It provides the highest average frame rate and avoids the stutter-prone territory of lower FPS values. If visual quality is a priority, 1080p Medium at 51 FPS is a reasonable compromise, but users should be aware that the frame rate will dip during intensive scenes. For any resolution above 1080p, the Low preset is the only recommendation, and even then, the performance is marginal.

Measured FPS Breakdown

The measured FPS data covers four resolutions and four settings presets, though not every combination includes min and max values. The 1920x1080 results are the most complete in terms of average FPS. At Low settings, the combo achieves 76 FPS average. Medium settings yield 51 FPS average, with a minimum of 44 FPS and a maximum of 59 FPS. High settings drop to 43 FPS average, and Ultra settings fall to 33 FPS average. The spread from Low to Ultra at 1080p is 43 FPS, which shows the significant impact of settings on this GPU.

At 2560x1440, the Low preset produces 53 FPS average. Medium settings produce 35 FPS average, with a minimum of 30 FPS and a maximum of 41 FPS. High settings yield 30 FPS average, and Ultra settings yield 23 FPS average. The delta between Low and Ultra at 1440p is 30 FPS, which is proportionally similar to the 1080p spread. This consistency indicates that the GPU's relative performance scales predictably with settings regardless of resolution.

At 3840x2160, the Low preset is the only one that breaks 30 FPS, with 31 FPS average. Medium settings produce 21 FPS average, with a minimum of 18 FPS and a maximum of 24 FPS. High settings yield 18 FPS average, and Ultra settings yield 13 FPS average. The 4K results show the GPU's severe limitations at high pixel counts, with even the lowest settings barely reaching playable territory.

The Medium preset is the only one with min and max FPS data across all three resolutions. At 1080p, the range is 44 to 59 FPS; at 1440p, it is 30 to 41 FPS; and at 2160p, it is 18 to 24 FPS. These ranges are relatively tight, suggesting that the system does not experience extreme frame time spikes, but the averages are simply too low for a comfortable experience at higher resolutions. The data shows a clear pattern: this combo is best suited for 1080p gaming with modest settings, and it should be avoided for 1440p or 4K gaming in Rust.