Rust

# Rust Performance Analysis: Intel Core Ultra 5 225 + NVIDIA GeForce RTX 4090

This combination pairs Intel's Core Ultra 5 225, a 10-core Arrow Lake desktop processor with a 4.90 GHz boost clock, alongside NVIDIA's flagship RTX 4090, built on the Ada Lovelace architecture with 24 GB of GDDR6X memory. In Rust, the measured frame rates reveal a system that scales predictably across resolutions, with the CPU becoming an increasingly significant factor at lower resolutions while the GPU dominates at 4K. The data shows a combo that ranks 68th out of 2,953 tested combinations, placing it in the top 2.3% of systems for this survival title.

Resolution Scaling

The frame rate progression from 1080p to 4K demonstrates classic scaling behavior, though with some notable deviations from purely GPU-bound expectations. At Low settings, the average FPS drops from 258 at 1920x1080 to 219 at 2560x1440, a 15.1% reduction, and further to 129 at 3840x2160, representing a 50% decrease from the 1080p baseline. This scaling pattern indicates that at Low settings, the system is heavily CPU-limited at 1080p; the Core Ultra 5 225's 10 cores and 10 threads are the primary constraint, and the RTX 4090's immense rasterization power cannot be fully utilized.

At Medium settings, the measured averages are 214 FPS at 1080p, 147 FPS at 1440p, and 87 FPS at 4K. The transition from 1080p to 1440p results in a 31.3% drop, while moving from 1440p to 4K yields a 40.8% reduction. This steeper decline at higher resolutions signals a shift toward GPU limitation, as the RTX 4090's workload increases with pixel count. The minimum FPS values recorded at Medium settings—182 at 1080p, 125 at 1440p, and 74 at 4K—show that frame pacing remains consistent, with the 4K minimum representing 85.1% of the average, suggesting no severe stuttering events.

High settings produce averages of 180 FPS at 1080p, 124 FPS at 1440p, and 73 FPS at 4K. The 1080p-to-1440p drop is 31.1%, nearly identical to the Medium setting's scaling, while the 1440p-to-4K reduction is 41.1%. This consistency across settings indicates that the rendering workload scales linearly with resolution when the CPU is not the bottleneck. At Ultra settings, the averages fall to 137 FPS at 1080p, 94 FPS at 1440p, and 56 FPS at 4K. The 1080p-to-1440p decline is 31.4%, and the 1440p-to-4K decline is 40.4%, maintaining the same pattern.

The limiting component analysis is clear: at 1080p and Low settings, the CPU constrains performance, as evidenced by the 258 FPS ceiling that does not increase proportionally with the GPU's capabilities. At 4K and Ultra settings, the GPU becomes the bottleneck, with the RTX 4090's 82.58 TFLOPS of FP32 compute being fully taxed. The data indicates that 1440p represents the equilibrium point where neither component is severely oversubscribed, making it the resolution where the balanced nature of this pairing is most apparent.

CPU Role

The Intel Core Ultra 5 225 features 10 cores and 10 threads, with a base clock of 3.30 GHz and a boost clock of 4.90 GHz. This configuration, part of the Arrow Lake-S architecture built on a 3 nm process by TSMC, provides 20 MB of shared L3 cache and 3 MB of L2 cache per core. The CPU's single-thread performance, as measured by Cinebench R23, is 3,655 points, while multi-core reaches 25,891 points. These scores place the processor in the 85th percentile among all CPUs, with an average benchmark score of 36,938.

In Rust, the CPU's role is most prominent at 1080p with lower settings. The difference between Low and Ultra settings at 1920x1080 is 121 FPS (258 versus 137), which is the largest absolute spread across any resolution. This 47% reduction in frame rate from Low to Ultra at 1080p indicates that the CPU's ability to feed the GPU with draw calls and game logic updates becomes the limiting factor. The 10-core configuration, while substantial, does not provide the thread count that some competing processors offer, and Rust's engine appears sensitive to single-thread performance, where the 4.90 GHz boost clock helps but cannot fully compensate.

Comparing to nearest rivals, the Core Ultra 5 225's average benchmark score of 36,938 sits nearly identically to the AMD Ryzen 5 5600F at 36,945 (0% delta), and slightly above the AMD Ryzen 5 5500X3D at 37,018 (-0.2% delta). The Intel Core i9-12900T posts 37,112, a -0.5% delta. These small margins suggest that in CPU-bound scenarios, the Core Ultra 5 225 performs on par with these alternatives, though the measured FPS data in Rust indicates that the processor's 10-thread limitation may manifest in the game's ability to utilize additional logical processors effectively.

The CPU's memory bandwidth of 102.4 GB/s over a dual-channel DDR5 interface provides adequate data throughput for Rust's open-world environment, which requires constant streaming of terrain and entity data. The 20 MB L3 cache helps maintain working set data close to the cores, reducing latency in scenarios where the game rapidly accesses frequently used assets. The Passmark single-thread score of 4,412 and physics score of 2,342 further contextualize the CPU's capabilities, with the physics score being particularly relevant to Rust's building and destruction mechanics.

GPU Role

The NVIDIA GeForce RTX 4090 is the centerpiece of this configuration, featuring 16,384 shading units, 512 TMUs, and 176 ROPs. Its 128 RT cores and 512 tensor cores enable hardware-accelerated ray tracing and AI-enhanced features, though Rust's traditional rasterization pipeline does not heavily utilize these capabilities. The GPU operates at a base clock of 2,235 MHz with a boost of 2,520 MHz, and its 24 GB of GDDR6X memory on a 384-bit bus delivers 1.01 TB/s of bandwidth. This memory configuration is particularly advantageous for Rust, which can exhibit high VRAM usage due to its large, persistent world and numerous player-built structures.

The GPU's raw compute performance is substantial: 82.58 TFLOPS of FP32 throughput and a texture rate of 1,290.2 GTexel/s. In Rust, this translates to the ability to render complex scenes with high draw distances and dense vegetation without significant frame rate degradation. The measured data confirms this, as the GPU maintains over 129 FPS at 4K Low settings, demonstrating that even at extreme resolutions, the RTX 4090 has ample headroom when the CPU can keep up.

However, the GPU's role becomes more pronounced as resolution increases. At 4K, the difference between Low and Ultra settings is 73 FPS (129 versus 56), representing a 56.6% reduction. This is a more substantial drop than at 1080p, where the same settings change yields a 47% reduction. The data indicates that at 4K, the RTX 4090's pixel rate of 443.5 GPixel/s becomes the limiting factor under Ultra settings, as the increased shading complexity and texture sampling demand exceed what the GPU can deliver while maintaining high frame rates.

The GPU's benchmark performance places it in the 88th percentile among all GPUs, with an average benchmark score of 60,347. Its nearest rivals include the Intel Arc Pro A60 at 60,326 (0% delta) and the AMD Radeon Pro Vega 48 at 60,140 (0.3% delta), though these comparisons reflect synthetic workloads rather than real-world gaming performance. In Rust specifically, the RTX 4090's performance is well above what the CPU can consistently feed at lower resolutions, making the GPU's capabilities somewhat underutilized at 1080p.

How This Combo Ranks

This combination achieves a rank of 68 out of 2,953 tested combos in Rust, placing it in the top 2.3% of all systems. This ranking reflects the strong overall performance of the pairing, though it is not at the absolute top, which would likely require a higher-tier CPU to match the RTX 4090's capabilities. The rank of 68 indicates that there are 67 other combinations that produce higher frame rates in Rust, likely featuring processors with more cores or higher single-thread performance.

The combo's ranking is more impressive when considering that the CPU is a mid-range offering in Intel's lineup, while the GPU is a flagship part. The 10-core, 10-thread configuration of the Core Ultra 5 225, combined with the RTX 4090's immense power, creates a system that excels in GPU-bound scenarios but leaves performance on the table in CPU-bound situations. At 1440p and 4K, where the GPU is more heavily taxed, the combo's ranking would be higher than at 1080p, where the CPU bottleneck is more apparent.

The percentile rankings further contextualize this: the CPU sits in the 85th percentile and the GPU in the 88th percentile, but the combo's in-game rank of 68 out of 2,953 (approximately the 97.7th percentile) suggests that the pairing synergizes well for Rust's specific workload. This is likely due to the game's moderate CPU requirements, which the Core Ultra 5 225 meets adequately, while the GPU's high memory bandwidth and compute power handle the game's rendering demands efficiently.

Settings Recommendations

The measured FPS data provides clear guidance for optimal settings based on the user's target resolution and refresh rate. At 1920x1080, the Medium preset delivers 214 FPS average with a minimum of 182 FPS, which is the best balance of visual quality and performance for high-refresh-rate displays. The High preset at 180 FPS is also viable for 144Hz monitors, while Ultra at 137 FPS may be preferable for those prioritizing visual fidelity over maximum frame rates. Low settings at 258 FPS exceed the refresh rate of most monitors, making them unnecessary unless chasing esports-level responsiveness.

At 2560x1440, the Medium preset yields 147 FPS average with a minimum of 125 FPS, making it the recommended choice for 144Hz displays. High settings at 124 FPS are suitable for 120Hz monitors, while Ultra at 94 FPS remains playable but may not fully utilize high-refresh-rate panels. Low settings at 219 FPS provide a significant margin for competitive play, though the visual trade-offs may be undesirable for many players.

At 3840x2160, the Medium preset delivers 87 FPS average with a minimum of 74 FPS, which is the most balanced option for 4K gaming, providing smooth gameplay on 60Hz displays with headroom for occasional dips. High settings at 73 FPS are also viable for 60Hz displays, though the minimum FPS data is not provided. Ultra at 56 FPS approaches the limits of playability for fast-paced survival gameplay, while Low at 129 FPS offers a high-refresh-rate experience at the cost of visual quality.

For the best overall experience, the Medium preset is recommended across all resolutions, as it consistently provides the highest minimum FPS values among the settings that maintain reasonable visual quality. The measured minimums of 182 FPS at 1080p, 125 FPS at 1440p, and 74 FPS at 4K ensure that frame times remain consistent without noticeable stuttering.

FAQ

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

A: The data shows 2560x1440 with Medium settings provides 147 FPS average and 125 FPS minimum, making it the sweet spot where both CPU and GPU are utilized effectively. At 1080p, the CPU limits performance, while at 4K, the GPU becomes the constraint.

Q: How does this CPU compare to its nearest rivals?

A: The Core Ultra 5 225 has an average benchmark score of 36,938, which is 0% different from the AMD Ryzen 5 5600F at 36,945, -0.2% versus the Ryzen 5 5500X3D at 37,018, and -0.5% versus the Intel Core i9-12900T at 37,112.

Q: Is the RTX 4090 overkill for this CPU in Rust?

A: At 1080p and Low settings, the 258 FPS average indicates the CPU is the bottleneck, so the GPU is not fully utilized. However, at 4K Ultra, the 56 FPS average shows the GPU is being taxed, demonstrating that the pairing is balanced at higher resolutions.

Q: What settings should I use for competitive play?

A: For maximum frame rates, Low settings at 1080p provide 258 FPS average, while at 1440p Low yields 219 FPS. These settings remove visual effects that can obscure enemies and maximize responsiveness.

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

A: This combination ranks 68th out of 2,953 tested combos in Rust, placing it in the top 2.3% of systems for this game.

Q: Does the game utilize the CPU's 10 cores effectively?

A: The data suggests partial utilization. At 1080p Low, the 258 FPS ceiling indicates the CPU is not the sole limiting factor, but the 47% drop from Low to Ultra at 1080p shows that the CPU's thread count and single-thread performance influence frame rates in CPU-bound scenarios.

Measured FPS Breakdown

1920x1080 (1080p):

• Low: 258 FPS average
• Medium: 214 FPS average, 182 FPS minimum, 246 FPS maximum
• High: 180 FPS average
• Ultra: 137 FPS average

2560x1440 (1440p):

• Low: 219 FPS average
• Medium: 147 FPS average, 125 FPS minimum, 169 FPS maximum
• High: 124 FPS average
• Ultra: 94 FPS average

3840x2160 (4K):

• Low: 129 FPS average
• Medium: 87 FPS average, 74 FPS minimum, 100 FPS maximum
• High: 73 FPS average
• Ultra: 56 FPS average

The data reveals a consistent pattern: Medium settings provide the most complete dataset with minimum and maximum FPS values, allowing for the most accurate assessment of frame pacing. The minimum FPS values at Medium settings—182 at 1080p, 125 at 1440p, and 74 at 4K—represent 85.0%, 85.0%, and 85.1% of their respective averages, indicating excellent frame time consistency across all resolutions. The maximum FPS values of 246 at 1080p, 169 at 1440p, and 100 at 4K show that the system has occasional headroom beyond the averages, which can be utilized in less demanding scenes.