Rust

# Rust with AMD Ryzen 9 9900X3D + Intel Arc B370

This combination pairs AMD's top-tier 12-core Ryzen 9 9900X3D desktop processor with Intel's integrated-class Arc B370 graphics, producing a stark imbalance in Rust: the CPU ranks in the 91st percentile among all processors, while the GPU sits at just the 5th percentile among all graphics solutions. The measured frame rates reflect this disparity, with the system struggling to maintain playable performance even at 1080p, suggesting Rust's rendering demands far outstrip what this integrated GPU can deliver despite the formidable compute resources available from the CPU side.

Resolution Scaling

The measured FPS data reveals a steep performance cliff as resolution increases. At 1080p Low, the system averages 69 FPS, which drops to 48 FPS at 1440p Low (a 30.4% reduction) and further to 28 FPS at 4K Low (a 59.4% reduction from 1080p). This scaling pattern indicates the GPU is the dominant limiting factor; as pixel count rises, the integrated Arc B370's fixed shading resources become increasingly saturated, causing frame rates to plummet proportionally with the increase in rendered pixels.

The gap between Low and Ultra settings widens dramatically at higher resolutions. At 1080p, the spread from Low (69 FPS) to Ultra (30 FPS) is 39 FPS, while at 4K the same spread is only 16 FPS (28 FPS Low vs 12 FPS Ultra). This compression at 4K suggests that at higher resolutions, the GPU is already so overloaded that additional graphical effects have diminishing impact on the already-low frame rates. The data implies that at 4K, even dropping to Low settings cannot rescue playability, as the pixel throughput requirement alone overwhelms the GPU.

The 1440p results show a middle ground: Low settings achieve 48 FPS, which is borderline playable, while High (27 FPS), Medium (32 FPS), and Ultra (20 FPS) all fall below typical smoothness thresholds. The scaling from 1080p to 1440p at High settings (39 to 27 FPS, a 30.8% drop) almost exactly mirrors the Low-setting drop (69 to 48 FPS, a 30.4% drop), indicating consistent GPU-bound behavior regardless of quality preset. This consistency reinforces that resolution, not settings complexity, is the primary throughput bottleneck for this integrated solution.

The 4K Ultra result of 12 FPS represents the worst-case scenario, where the combination of maximum pixel count and highest graphical fidelity reduces the system to slideshow territory. Notably, the 4K Medium measurement includes a minimum FPS of 16 and maximum of 22, showing tight clustering around the 19 FPS average; this narrow band suggests the GPU is running at its absolute limit with no headroom for variance, whereas the 1080p Medium range (39-53 FPS around a 46 average) shows wider variation, indicating occasional CPU-driven frame time spikes even at lower resolutions.

GPU Role

The Intel Arc B370 is an integrated graphics solution based on the Xe3-LPG architecture built on Intel's 3nm process, featuring 1280 shading units, 40 texture mapping units, and 20 raster operation units. Its boost clock reaches 2400 MHz, with a base clock of just 300 MHz, and it draws a remarkably low 25 W TDP. The GPU's memory configuration is entirely system-shared, meaning it borrows from the CPU's DDR5 memory pool through a dual-channel bus, with bandwidth described as "system dependent" rather than dedicated VRAM.

The GPU's benchmark presence is minimal: its only recorded score is 1184 in 3DMark Steel Nomad DX12, placing it at the 5th percentile of all GPUs. Its nearest rivals are legacy parts like the ATI Radeon HD 5770 (score 1190, deltaPct -0.5%), ATI Mobility Radeon HD 5570 (1186, -0.2%), and AMD Radeon HD 7650M (1192, -0.7%), all of which are over a decade old. This context explains why Rust, a game with demanding draw distances and complex world geometry, reduces this system to sub-30 FPS at most settings; the integrated GPU simply lacks the raw throughput for modern survival games.

The shared memory architecture means Rust's texture streaming and asset loading compete directly with system memory bandwidth, which is rated at 89.6 GB/s for the CPU's dual-channel DDR5 setup. The "System Shared" memory size and type, coupled with "System Dependent" bandwidth, means performance can vary based on what else the system is doing; however, the measured FPS data shows consistent results, suggesting the shared memory bandwidth is not the primary constraint—rather, the GPU's 6.144 TFLOPS FP32 compute and 48.00 GPixel/s pixel rate are the limiting factors.

The GPU's 10 ray tracing cores and DirectX 12 Ultimate support indicate feature completeness, but Rust's rendering pipeline does not appear to benefit from these capabilities in the measured data. The 96.00 GTexel/s texture rate and 12.29 TFLOPS FP16 throughput are respectable on paper for an integrated part, yet the 4K Ultra result of 12 FPS demonstrates that real-world gaming workloads far exceed the theoretical capabilities. The 25 W power envelope means the GPU can never boost for extended periods, likely causing thermal and power throttling that keeps clocks well below the 2400 MHz boost in sustained gaming.

CPU Role

The AMD Ryzen 9 9900X3D is a 12-core, 24-thread processor based on the Zen 5 architecture (Granite Ridge codename), built on TSMC's 4nm process with 16,630 million transistors across a dual-chiplet design (2x 70.6 mm² dies). It operates with a 4.40 GHz base clock and 5.50 GHz boost clock, drawing 120 W TDP, and supports DDR5 memory on the AMD Socket AM5 platform with PCIe Gen 5 (24 lanes). The processor includes 128 MB of L3 cache, 1 MB L2 cache per core, and 80 KB L1 cache per core, providing substantial on-die storage for game data.

CPU benchmark results show strong multi-threaded performance: Cinebench R23 multicore scores 47737, Geekbench multicore reaches 22884, and Passmark multithread hits 56154. Single-thread performance is equally impressive, with Cinebench R23 single-core at 6739 and Geekbench single-core at 3041. The processor's 91st percentile ranking among all CPUs, with an average benchmark score of 54762, places it in the top tier of desktop processors. Its nearest rivals include the Intel Core Ultra 5 245KF (avgScore 55093, deltaPct -0.6%), Intel Core Ultra 5 245K (54053, +1.3%), Intel Xeon 6505P (53701, +2%), and Intel Core i7-14700F (53620, +2.1%), showing the 9900X3D is competitive with but slightly behind the Ultra 5 245KF in aggregate benchmarks.

In Rust, the CPU's role appears secondary given the GPU bottleneck, but the 3DMark 16-thread score of 12490 and max-thread score of 13795 suggest ample headroom for game logic, physics, and AI simulation. The 128 MB L3 cache is particularly relevant for Rust, which features large, persistent worlds with many entities; the massive cache can hold significant game state data, potentially reducing memory latency. However, the measured FPS data shows the CPU is not the limiting factor—even at 1080p Low, where the GPU is least stressed, the system only reaches 69 FPS, and the 1080p Medium range (39-53 FPS) shows variance that could indicate occasional CPU frame-time spikes but does not suggest sustained CPU saturation.

The processor's 24 threads and 5.50 GHz boost clock mean it can handle Rust's multi-threaded rendering and simulation tasks, but the GPU cannot keep pace. The integrated Radeon Graphics on the CPU is present but irrelevant for gaming since the Arc B370 handles display output. The CPU's memory bandwidth of 89.6 GB/s is shared with the GPU, and while this might seem like a potential bottleneck, the GPU's system-shared memory architecture means it relies on this same bandwidth; the measured results indicate the GPU's compute limits are hit before memory bandwidth becomes the constraint.

How This Combo Ranks

This CPU+GPU combination ranks 2710 out of 2953 tested combos in Rust, placing it in the bottom 8.2% of all configurations. This ranking is unsurprising given the extreme disparity between the CPU's 91st percentile standing and the GPU's 5th percentile position. The data suggests that pairing a top-tier 12-core processor with an integrated-class GPU creates a severely unbalanced system for gaming, where the GPU's limitations cap performance regardless of CPU capability.

The rank of 2710 indicates that 242 other tested combinations perform worse than this setup in Rust, likely involving even older or more limited integrated GPUs or severely underpowered CPUs. However, the fact that this combo sits so low despite having a 128 MB L3 cache, 5.50 GHz boost clock, and 24 threads emphasizes that Rust's performance is overwhelmingly GPU-bound for this configuration. The CPU's nearest rivals all have similar aggregate scores (within ±2.1%), yet none of them would meaningfully change the gaming outcome when paired with the same GPU.

The gap between this combo's rank and what the CPU alone would suggest is stark: the 9900X3D is in the top 9% of CPUs, but the combo is in the bottom 8.2% of game configurations. This 82-percentage-point discrepancy highlights how a weak GPU negates CPU advantages in gaming. The measured FPS data confirms this: at 1080p Ultra (30 FPS) and 4K Ultra (12 FPS), the results are characteristic of low-end integrated graphics, not a system with a $599 launch MSRP processor at its core.

For context, the GPU's nearest rivals (ATI Radeon HD 5770, etc.) are all GPUs from the early 2010s, and the combo rank suggests this setup performs similarly to systems from that era in Rust. The data implies that users of this combination would need to dramatically lower expectations or consider external GPU solutions, as the integrated Arc B370 cannot leverage the CPU's capabilities. The 2953 total combos tested provide a broad comparison field, and this ranking firmly places the system in the "lowest tier" for Rust gameplay.

FAQ

Q: What is the best possible frame rate this system can achieve in Rust?

A: The highest measured average FPS is 69, achieved at 1920x1080 with Low settings. This is the only configuration that exceeds 60 FPS; all other settings and resolutions produce averages of 48 FPS or lower.

Q: Does the CPU's 128 MB L3 cache help Rust performance?

A: While the 128 MB L3 cache is a significant asset for game data storage and the CPU scores high in benchmarks (Cinebench R23 multicore 47737, single-core 6739), the measured FPS results indicate the GPU is the bottleneck. Even at 1080p Low where the GPU is least stressed, the system only reaches 69 FPS, suggesting the CPU's cache advantage cannot overcome GPU limitations.

Q: How does this combo compare to the GPU's nearest rivals in Rust?

A: The GPU's nearest rivals include the ATI Radeon HD 5770 (avgScore 1190, deltaPct -0.5%) and AMD Radeon HD 7650M (1192, -0.7%). The Arc B370's score of 1184 is within 0.7% of these parts, indicating the combo likely performs similarly to systems with these decade-old GPUs, consistent with its 2710 rank out of 2953.

Q: Is 1440p gaming viable with this system?

A: At 2560x1440, only Low settings achieve a playable average of 48 FPS. High (27 FPS), Medium (32 FPS), and Ultra (20 FPS) all fall below 30 FPS, making 1440p viable only with the lowest quality preset.

Q: What causes the FPS drop from 1080p to 4K?

A: The drop from 69 FPS (1080p Low) to 28 FPS (4K Low) represents a 59.4% reduction, which closely tracks the increase in pixel count (1920x1080 to 3840x2160 is a 4x pixel increase, though the FPS drop is less than 4x, indicating some headroom in GPU utilization). The GPU's system-shared memory and 6.144 TFLOPS FP32 compute are insufficient for 4K rendering.

Q: How does the CPU's benchmark score compare to its nearest rivals?

A: The 9900X3D has an average benchmark score of 54762, which is 0.6% lower than the Intel Core Ultra 5 245KF (55093), 1.3% higher than the Intel Core Ultra 5 245K (54053), 2% higher than the Intel Xeon 6505P (53701), and 2.1% higher than the Intel Core i7-14700F (53620). These small deltas indicate the CPU is competitively positioned among top processors.

Measured FPS Breakdown

At 1920x1080, the system delivers its best results: Low settings average 69 FPS, Medium averages 46 FPS (with a range of 39-53 FPS), High averages 39 FPS, and Ultra averages 30 FPS. The spread from Low to Ultra is 39 FPS, showing that settings have a substantial impact at this resolution. The Medium setting's variance (14 FPS range) is the largest of any configuration, suggesting occasional frame-time spikes likely from CPU-side simulation tasks.

Moving to 2560x1440, performance drops across all presets: Low averages 48 FPS, Medium averages 32 FPS (range 27-37 FPS), High averages 27 FPS, and Ultra averages 20 FPS. The Low-to-Ultra spread narrows to 28 FPS, indicating that at higher resolutions, the GPU's pixel throughput becomes the dominant constraint, reducing the relative impact of quality settings. The Medium range of 10 FPS (27-37) is tighter than at 1080p, further evidence of GPU saturation.

At 3840x2160, the system struggles across the board: Low averages 28 FPS, Medium averages 19 FPS (range 16-22 FPS), High averages 16 FPS, and Ultra averages 12 FPS. The Low-to-Ultra spread compresses to just 16 FPS, showing that at 4K, even the lowest settings cannot overcome the GPU's pixel throughput limits. The Medium range of 6 FPS (16-22) is the tightest of all configurations, confirming the GPU is running at maximum capacity with minimal variance.

The data reveals a consistent pattern: each resolution step (1080p to 1440p to 4K) reduces FPS by roughly 30-40% at the same settings. For example, Low goes 69 → 48 → 28 FPS, High goes 39 → 27 → 16 FPS, and Ultra goes 30 → 20 → 12 FPS. This geometric scaling indicates a purely GPU-bound scenario where the CPU's 12 cores and 5.50 GHz boost clock are never the limiting factor, as the Arc B370's 20 ROPs and 48.00 GPixel/s pixel rate cannot sustain higher throughput.

Settings Recommendations

Based on the measured FPS rows, the only configuration that achieves consistently smooth gameplay is 1920x1080 with Low settings, which averages 69 FPS. This is the sole preset above the 60 FPS threshold, making it the recommended choice for responsive play. The Low preset at 1080p provides a 50% improvement over Medium (46 FPS) and a 130% improvement over Ultra (30 FPS), indicating that sacrificing visual quality yields substantial performance gains at this resolution.

For users who prioritize visual fidelity over frame rate, 1080p Medium (46 FPS) offers a balance, though the 39-53 FPS range suggests occasional dips below 40 FPS that may be noticeable in fast-paced gameplay. The 1080p High preset (39 FPS) is marginal, while Ultra (30 FPS) is only suitable for static scenes or screenshots. At 1440p, only Low (48 FPS) is playable; Medium (32 FPS) and above fall into the sub-35 FPS range that will feel sluggish in Rust's combat and building scenarios.

The 4K resolutions are not recommended for any gameplay, as even Low (28 FPS) falls below 30 FPS, and Ultra (12 FPS) is effectively unplayable. The data suggests that this system should target 1080p with Low or Medium settings for the best balance of performance and visual quality. The 69 FPS at 1080p Low is the only "smooth" experience measured, and the 46 FPS at 1080p Medium is the highest-quality playable option. Given the GPU's 5th percentile ranking, users should expect to compromise heavily on both resolution and settings; the measured data indicates that 1080p Low is the sweet spot, with Medium as a viable alternative for those willing to accept lower frame rates for improved graphics.