Rust

The AMD Ryzen 7 3700X paired with the Intel Arc B390 is a combination that lands near the bottom of the tested field for Rust, ranking 2601 out of 2953 combos. This places it in the 12th percentile of all tested systems, meaning roughly 88% of configurations deliver higher average frame rates in this survival title. The data shows a system that is fundamentally GPU-limited at higher resolutions, yet the CPU’s aging architecture also contributes to the overall struggle, particularly when attempting to maintain playable frame rates at 1080p with lower settings.

How This Combo Ranks

The combo rank of 2601 out of 2953 tested combinations places this pairing firmly in the lower quartile of all systems benchmarked in Rust. Benchmark results indicate that the overwhelming majority of configurations outperform this setup, which is not surprising given the individual components’ percentile standings. The AMD Ryzen 7 3700X sits at the 84th percentile among all CPUs tested, a respectable position for a processor released in the 3000 series, but the Intel Arc B390 GPU is the clear bottleneck, ranking at just the 9th percentile among all GPUs. This massive disparity between CPU and GPU capability means the graphics card holds back the entire system.

In practical terms, the data shows that this combo’s performance in Rust is dominated by the GPU’s limitations. The Arc B390’s average benchmark score of 1482 in 3DMark Steel Nomad places it in direct competition with integrated and entry-level discrete graphics solutions from over a decade ago. Its nearest rivals include the NVIDIA GeForce GT 520MX with a delta of 1.3%, the GeForce 800M with a delta of 1.5%, the GT 625 OEM with a delta of 2.5%, and the GT 710 with a delta of 2.7%. These are all low-end parts, and the Arc B390 only marginally outperforms them, by less than 3% in every case. This context explains why the combo ranks so poorly; the GPU is simply not designed for modern gaming workloads like Rust.

The CPU, meanwhile, is a far more capable component. Its average benchmark score of 34260 places it within 0.5% of the AMD Ryzen AI 7 350 (delta 0.1%), the AMD EPYC 4244P (delta 0.1%), the Intel Core i5-13450HX (delta -0.2%), and the Intel Core Ultra 7 165H (delta 0.5%). These rivals are all modern processors, and the 3700X holds its own against them in synthetic benchmarks. However, when paired with the Arc B390, the CPU’s potential is never realized in Rust because the GPU cannot keep up with even modest frame rate demands. The rank reflects the combination’s actual measured performance, not the CPU’s theoretical capability.

CPU Role

The AMD Ryzen 7 3700X is an 8-core, 16-thread processor based on the Zen 2 architecture, codenamed Matisse, built on TSMC’s 7 nm process node. It has a base clock of 3.60 GHz and a boost clock of 4.40 GHz, with a 65 W TDP. The CPU features 64 KB of L1 cache per core, 512 KB of L2 cache per core, and a 32 MB L3 cache. It supports DDR4 memory in a dual-channel configuration with a memory bandwidth of 51.2 GB/s, and it connects via PCIe Gen 4 with 24 lanes. The processor was released on 2019-07-06 with a launch MSRP of $329, and it remains in active production.

In Rust, the CPU’s role is significant because the game is known for heavy single-threaded and multi-threaded workloads, particularly when simulating the persistent world, handling entity interactions, and processing player builds. The 3700X’s 8 cores and 16 threads provide solid multi-threading capability, as evidenced by its Cinebench R15 multicore score of 2092 and Geekbench multicore score of 8899. Its single-thread performance, measured at 204 in Cinebench R15 and 1593 in Geekbench single-core, is adequate for the game’s logic threads but not exceptional by modern standards. The PassMark single-thread score of 2656 and multithread score of 22458 further illustrate a balanced processor that can handle many tasks simultaneously.

However, the measured FPS data in Rust shows that the CPU is not the primary limiting factor in most scenarios. At 1080p with Low settings, the combo achieves 76 FPS average, which suggests the CPU can push beyond that if the GPU allowed. At 4K with Low settings, the average drops to 31 FPS, a massive reduction that points squarely at the GPU as the choke point. The CPU’s 84th percentile ranking among all CPUs indicates it is a competent part, but the Arc B390’s 9th percentile ranking means the graphics card is the weakest link. In Rust, the CPU’s 32 MB L3 cache and high core count help with asset streaming and world simulation, but the GPU’s inability to render frames quickly enough negates any advantage.

The 3700X’s architecture, while older, still provides competitive synthetic benchmark scores against much newer processors. Its nearest rivals in the CPU benchmark database include the AMD Ryzen AI 7 350, which is only 0.1% ahead, and the Intel Core Ultra 7 165H, which is 0.5% behind. This shows that the CPU is not the reason for the poor combo rank; rather, it is the GPU that drags the entire system down. In Rust, where frame rates are often limited by GPU fill rate and shader complexity, the 3700X waits idly for the Arc B390 to produce frames.

FAQ

Q: Why does this combo rank so low in Rust despite having a decent CPU?

A: The combo ranks 2601 out of 2953 because the Intel Arc B390 GPU is a severe bottleneck. The GPU sits at the 9th percentile among all GPUs, with an average 3DMark Steel Nomad score of 1482, placing it near the NVIDIA GeForce GT 710 and GT 625 OEM, which are only 2.5% to 2.7% behind. Meanwhile, the Ryzen 7 3700X is at the 84th percentile among CPUs, so the graphics card holds back the system.

Q: What is the best average FPS this combo can achieve in Rust?

A: The highest measured average FPS is 76, achieved at 1920x1080 with Low settings. At the same resolution with Medium settings, the average drops to 51 FPS, and with High settings it falls to 43 FPS. At 4K with Low settings, the average is 31 FPS, which is the best result at that resolution.

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

A: The Intel Arc B390’s average benchmark score of 1482 is only 1.3% higher than the NVIDIA GeForce GT 520MX, 1.5% higher than the GeForce 800M, 2.5% higher than the GT 625 OEM, and 2.7% higher than the GT 710. These are marginal differences, and the GPU’s 9th percentile ranking confirms it is one of the weakest graphics solutions tested.

Q: Is the CPU or GPU more responsible for the low frame rates at 1080p?

A: At 1080p with Low settings, the combo hits 76 FPS average, which is the highest measured result. The CPU can likely push higher, but the GPU’s rendering limits cap the frame rate. At 1080p with High settings, the average drops to 43 FPS, showing that the GPU struggles as settings increase, while the CPU’s performance remains consistent.

Q: What is the CPU’s single-thread performance and how does it affect Rust?

A: The Ryzen 7 3700X scores 204 in Cinebench R15 single-core and 1593 in Geekbench single-core, with a PassMark single-thread score of 2656. Rust relies on single-threaded logic for some game systems, but the measured FPS data indicates the GPU limits performance more than the CPU, since frame rates drop dramatically when resolution or settings increase.

Q: Does the combo have any playable settings at 4K?

A: At 3840x2160, the best average FPS is 31 with Low settings, which is borderline playable for some users. Medium settings yield 21 FPS average with a minimum of 18 and maximum of 24, while High produces 18 FPS and Ultra drops to 13 FPS. None of these 4K results are smooth, indicating the GPU cannot handle this resolution in Rust.

Measured FPS Breakdown

The measured FPS data provides a clear picture of how this combo performs across three resolutions and four settings presets. At 1920x1080, the lowest resolution tested, the system delivers its best results. With Low settings, the average FPS is 76, which is the highest number recorded for this combo in any configuration. Medium settings at 1080p produce an average of 51 FPS, with a minimum of 44 and a maximum of 59 FPS, indicating some frame time variance. High settings reduce the average to 43 FPS, and Ultra settings drop it further to 33 FPS. This progression shows a steady decline as graphical complexity increases, with the GPU struggling to maintain frame rates once settings go beyond Low.

At 2560x1440, the performance drops noticeably. Low settings yield an average of 53 FPS, which is still playable but a 30% reduction from the 1080p Low result. Medium settings at 1440p produce an average of 35 FPS, with a minimum of 30 and a maximum of 41 FPS. High settings fall to an average of 30 FPS, and Ultra settings drop to 23 FPS. These numbers suggest that 1440p is only viable at Low settings for a reasonably smooth experience, while Medium and above become increasingly stutter-prone.

At 3840x2160, the system struggles significantly. Low settings provide an average of 31 FPS, which is the only 4K result that approaches playability. Medium settings average 21 FPS, with a minimum of 18 and a maximum of 24 FPS. High settings drop to an average of 18 FPS, and Ultra settings produce just 13 FPS. The 4K data confirms that the Intel Arc B390 is not capable of rendering Rust at this resolution with any acceptable level of performance, regardless of settings.

The data also shows that the gap between Low and Ultra settings widens as resolution increases. At 1080p, the difference between Low (76 FPS) and Ultra (33 FPS) is 43 FPS. At 1440p, the difference is 30 FPS (53 vs 23). At 4K, the difference is 18 FPS (31 vs 13). This pattern indicates that the GPU’s limitations become more pronounced at higher resolutions, where pixel fill rate and memory bandwidth are more critical. The CPU, meanwhile, maintains consistent performance across resolutions, as evidenced by the relatively small frame rate drops when moving from 1080p Low to 1440p Low (from 76 to 53 FPS) compared to the steep drops when settings are increased.

Resolution Scaling

Resolution scaling analysis reveals that the Intel Arc B390 is the primary limiting component in this combo. Moving from 1920x1080 to 2560x1440 at Low settings reduces the average FPS from 76 to 53, a 30% decrease. Moving from 1440p to 4K at Low settings further reduces the average from 53 to 31 FPS, another 42% decrease. From 1080p to 4K at Low settings, the total drop is from 76 to 31 FPS, a 59% reduction. This steep decline is characteristic of a GPU that lacks the raw processing power to handle higher pixel counts.

At Medium settings, the scaling is similar. 1080p Medium averages 51 FPS, 1440p Medium averages 35 FPS, and 4K Medium averages 21 FPS. The drop from 1080p to 1440p is 31%, and from 1440p to 4K is 40%. At High settings, 1080p yields 43 FPS, 1440p yields 30 FPS, and 4K yields 18 FPS, representing drops of 30% and 40% respectively. The consistency of these percentage drops across settings indicates that resolution is the dominant factor, not the individual graphics options.

The pattern points to the GPU being the bottleneck. The Ryzen 7 3700X, with its 8 cores and 16 threads, is more than capable of feeding the Arc B390 at 1080p, but as resolution increases, the GPU’s shading units (1536), texture mapping units (48), and raster output units (24) become overwhelmed. The GPU’s pixel rate of 60.00 GPixel/s and texture rate of 120.0 GTexel/s are simply too low for 4K rendering in a demanding game like Rust. The CPU’s 32 MB L3 cache and high multi-thread scores (PassMark multithread 22458) do not help when the GPU cannot produce frames fast enough.

Interestingly, the FPS drops are more severe when increasing resolution than when increasing settings. For example, at 1080p, going from Low to Ultra drops the average from 76 to 33 FPS, a 57% reduction. But going from 1080p Low to 4K Low drops from 76 to 31 FPS, a 59% reduction. This similarity suggests that both resolution and settings tax the GPU in comparable ways, reinforcing that the Arc B390 is the limiting factor. The CPU’s role is secondary, and its performance remains stable across all tested configurations.

Settings Recommendations

Based on the measured FPS data, the best experience for this combo in Rust is achieved at 1920x1080 with Low settings, which produces an average of 76 FPS. This is the only configuration that comfortably exceeds the 60 FPS threshold, providing a smooth gameplay experience for a survival game where quick reactions matter. The 1080p Medium preset averages 51 FPS, which is playable but may show occasional dips, while High settings at 1080p average 43 FPS and Ultra drop to 33 FPS. For players who prioritize visual fidelity over frame rate, 1080p Medium offers a reasonable compromise, but the data clearly shows that Low is the sweet spot for this GPU.

At 2560x1440, Low settings average 53 FPS, which is still playable but noticeably less smooth than 1080p Low. Medium settings at 1440p average 35 FPS, which is borderline, and High and Ultra are not recommended due to averages of 30 and 23 FPS respectively. If a player has a 1440p monitor, the Low preset is the only viable option, but the 53 FPS average means there will be frame pacing issues during intense scenes with many players or large bases.

At 3840x2160, none of the settings provide a consistently playable experience. Low settings average 31 FPS, which is technically playable but far from smooth, and Medium averages 21 FPS with a minimum of 18 FPS. High and Ultra are effectively unplayable at 18 and 13 FPS averages. The data suggests that 4K should be avoided entirely with this combo, as even the lowest settings cannot maintain a stable frame rate.

The measured FPS rows indicate that the Intel Arc B390’s 24 ROPs and 7.680 TFLOPS of FP32 performance are insufficient for Rust’s rendering demands at higher settings. The GPU’s 3 nm process and Xe3-LPG architecture do not compensate for its low raw throughput. For the best experience, players should use 1080p Low settings, which yields the highest average FPS and the least frame time variance among all tested configurations. If a higher resolution is required, 1440p Low is the only acceptable alternative, but players should expect a significant drop from the 1080p Low result. The Ryzen 7 3700X’s 65 W TDP and 8-core/16-thread configuration provide enough headroom for background tasks and game logic, but the GPU remains the definitive limiting factor in Rust.