Rust

CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core Ultra 5 125H is a 14-core, 18-thread mobile processor built on Intel's Meteor Lake architecture using a 7 nm process. It operates with a base clock of 3.60 GHz and a boost clock of 4.50 GHz, and its 28 W TDP classifies it as a power-efficient mobile part rather than a desktop-class performer. The chip includes 18 MB of shared L3 cache, with 2 MB of L2 per core and 112 KB of L1 per core. Memory support is DDR5, running dual-channel with a bandwidth of 89.6 GB/s, and the CPU connects via PCIe Gen 5.

In Rust, this CPU's role is substantial. The game is known for heavy simulation and entity updating, which stresses multi-core throughput. The Core Ultra 5 125H posts a Cinebench R23 multi-core score of 12804.5 and a single-core score of 1647.5. For context, its average benchmark score of 27507 places it in the 79th percentile among all CPUs. Its nearest rivals include the AMD Ryzen 7 5800 (avg score 27535, delta -0.1%), Intel Core i5-12600K (avg score 27578, delta -0.3%), and AMD Ryzen 7 5700X (avg score 27578, delta -0.3%). The data shows this chip sits within a fraction of a percent of those desktop parts on average, despite being a mobile processor.

The Passmark multi-thread score of 21100 and single-thread score of 3399 further illustrate the balance. Rust benefits from strong single-thread performance for the main game logic thread, while background simulation tasks scale across the 14 cores. The CPU's 18 threads allow for smooth handling of server-side computations and building destruction physics. In practice, the 125H's performance is nearly identical to the Ryzen 7 5800, making it a capable mid-range mobile option for Rust.

When examining the measured FPS data, the CPU's influence becomes clearer. At 1080p Low settings, the combo achieves 140 FPS average. That high frame rate suggests the CPU is feeding the GPU well at lower graphical loads. At 1080p Ultra, the average drops to 60 FPS, which is exactly half of the Low result. This halving indicates that while the CPU can drive high frame rates, the GPU becomes the bottleneck at higher settings, even at 1080p. The CPU's 79th percentile ranking is respectable, and the nearest rival data confirms it performs on par with desktop chips like the i5-12600K, which is a strong showing for a 28 W mobile part.

Settings Recommendations — which preset gives the best experience per the measured rows

The measured FPS data provides four settings presets at each resolution: Low, Medium, High, and Ultra. The Medium preset consistently offers the best balance between visual quality and frame rate stability, based on the available min/max data.

At 1920x1080, the Medium preset averages 94 FPS with a min of 80 and max of 108. This is a solid, smooth experience for a survival game where reaction time matters during player encounters. The Low preset hits 140 FPS, which is excellent for competitive play, but the jump from Low to Medium only costs 46 FPS while adding substantial visual fidelity. The High preset averages 79 FPS, which is still playable but begins to show the GPU working harder. Ultra drops to 60 FPS exactly, which is the minimum for a smooth experience on many displays, but the lack of min/max data for Ultra at 1080p means we cannot confirm frame time consistency.

At 2560x1440, the Medium preset averages 65 FPS with a min of 55 and max of 74. This is a playable range, though the 55 FPS minimum could cause noticeable stutter in dense scenes. The Low preset at 1440p averages 96 FPS, which is a strong result for a mobile combo. High averages 55 FPS, which is borderline for a game like Rust where quick movement is common. Ultra at 1440p averages 42 FPS, which is below the threshold for comfortable play.

At 3840x2160, the Medium preset averages 38 FPS with a min of 32 and max of 44. This is marginal at best. The Low preset at 4K averages 57 FPS, which is surprisingly playable given the resolution. High at 4K averages 32 FPS, and Ultra averages 25 FPS, both of which are too low for practical use.

The data suggests the Medium preset is the sweet spot. At 1080p, it provides near-100 FPS with consistent frame times (80-108 range). At 1440p, it stays above the 55 FPS minimum, which is acceptable for most players. At 4K, Medium is the highest preset that remains remotely playable, though players should strongly consider Low for 4K gameplay. For competitive play, the Low preset at 1080p delivers 140 FPS, which maximizes responsiveness. For visual quality with playable performance, Medium at 1080p or 1440p is the recommended choice.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The FPS scaling across resolutions reveals the bottleneck characteristics of this combo. Starting with the Medium preset, the average FPS goes from 94 at 1080p, to 65 at 1440p, to 38 at 4K. This represents a 30.9% drop from 1080p to 1440p, and a 59.6% drop from 1080p to 4K. For the Low preset, averages go from 140 at 1080p, to 96 at 1440p, to 57 at 4K — a 31.4% drop to 1440p and a 59.3% drop to 4K.

These scaling patterns are telling. When moving from 1080p to 1440p, the pixel count increases by 77.8%, yet the FPS drops by only about 31%. This indicates the CPU is still partially limiting performance at 1080p — if the GPU were the sole limiter, the FPS drop would more closely match the pixel increase. As resolution increases to 4K, the pixel count from 1440p jumps by 225%, but the FPS drop from 1440p to 4K is only about 41.5% for Medium (65 to 38) and 40.6% for Low (96 to 57). This suggests that at 4K, the GPU is now the dominant limiter, as the scaling becomes more pixel-bound.

The Ultra preset shows even more pronounced GPU limiting. At 1080p Ultra, the average is 60 FPS. At 1440p Ultra, it drops to 42 FPS (a 30% drop). At 4K Ultra, it falls to 25 FPS (a 58.3% drop from 1080p). The High preset follows a similar pattern: 79 FPS at 1080p, 55 at 1440p (30.4% drop), and 32 at 4K (59.5% drop from 1080p).

The data indicates that at 1080p, the CPU's 14 cores and 18 threads are sufficient to drive high frame rates, but the Radeon RX 7800M begins to struggle as settings increase. At 4K, the GPU is clearly the limiting factor across all settings. The FPS halving from 1080p Low (140 FPS) to 1080p Ultra (60 FPS) at the same resolution confirms that graphical settings have a massive impact on this combo, pointing to the GPU as the primary constraint at higher quality levels. This is expected given the RX 7800M's mobile form factor and 180 W TDP.

FAQ

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

A: The data shows 1920x1080 is the most reliable resolution. At Medium settings, it averages 94 FPS with a min of 80 and max of 108. At 2560x1440 Medium, the average drops to 65 FPS with a min of 55, which is still playable but less consistent. At 3840x2160, even Low settings only average 57 FPS, making 1080p the recommended primary resolution.

Q: How does the CPU compare to its nearest rivals in raw performance?

A: The Intel Core Ultra 5 125H has an average benchmark score of 27507, which places it in the 79th percentile. It sits within 0.5% of the AMD Ryzen 7 5800 (27535, -0.1%), Intel Core i5-12600K (27578, -0.3%), AMD Ryzen 7 5700X (27578, -0.3%), and AMD Ryzen 3 PRO 5355G (27382, +0.5%). This means the mobile chip effectively matches desktop processors from a few generations back.

Q: Which settings preset should I avoid entirely?

A: The Ultra preset is not recommended at any resolution. At 1080p Ultra, the average is 60 FPS, which is the bare minimum for smooth play, but at 1440p it drops to 42 FPS and at 4K it falls to 25 FPS. The High preset at 4K also averages only 32 FPS, which is too low for a game requiring quick reactions. Stick to Medium or Low for playable performance.

Q: Is the GPU the bottleneck at 1080p?

A: Partially. The FPS scaling from 1080p to 1440p shows a 31% drop while pixel count increases by 77.8%, indicating the CPU still contributes to limiting performance at 1080p. However, the significant FPS drop between Low (140 FPS) and Ultra (60 FPS) at the same resolution shows the GPU becomes the primary constraint as settings increase, even at 1080p.

Q: What does the combo's rank in this game mean?

A: The combo ranks 1958 out of 2953 tested combinations for Rust. This places it in the middle of the pack, which is consistent with the CPU's 79th percentile and GPU's 73rd percentile rankings. It is a mid-range performer, capable of 1080p gaming at high frame rates but not suited for 4K gaming at high settings.

Q: How does frame time consistency look across presets?

A: The data includes min/max values only for the Medium preset. At 1080p Medium, the range is 80-108 FPS, a 28 FPS spread. At 1440p Medium, the range is 55-74 FPS, a 19 FPS spread. At 4K Medium, the range is 32-44 FPS, a 12 FPS spread. The narrower range at higher resolutions suggests more consistent frame pacing, but the lower averages make it less playable.

GPU Role — VRAM, clocks, and how they relate to this game's results

The AMD Radeon RX 7800M is built on the Navi 32 chip using RDNA 3.0 architecture, manufactured on TSMC's 5 nm process. It features 28,100 million transistors on a 346 mm² die, with a transistor density of 81.2 million per mm². The GPU operates at a base clock of 1295 MHz, a boost clock of 2335 MHz, and a game clock of 2145 MHz. Memory runs at 2250 MHz with 18 Gbps effective speed, delivering 432.0 GB/s of bandwidth across a 192-bit bus. The 12 GB of GDDR6 VRAM is substantial for modern titles, and the 3840 shading units, 240 TMUs, and 96 ROPs provide solid compute throughput. The GPU's FP32 performance is 35.87 TFLOPS, with pixel rate of 224.2 GPixel/s and texture rate of 560.4 GTexel/s. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, with 60 ray tracing cores.

In Rust, the RX 7800M's role becomes apparent when examining the measured FPS data. The GPU's average benchmark score is 27883, placing it in the 73rd percentile among all GPUs. Its nearest rivals include the AMD Radeon Pro Vega 20 (27839, +0.2%), AMD Radeon Pro W5500X (27973, -0.3%), NVIDIA GeForce GTX 980 Ti (28020, -0.5%), and AMD FirePro S7150 (28117, -0.8%). The data shows this GPU performs similarly to the GTX 980 Ti on average, though the RX 7800M has significantly more VRAM and modern feature support.

The 12 GB VRAM is relevant for Rust, which can use substantial memory for texture streaming and world data. At 4K Ultra, the combo averages only 25 FPS, indicating the GPU is heavily taxed by the combination of high resolution and high settings. The 432 GB/s bandwidth is sufficient for 1080p and 1440p gaming, but at 4K, the memory bandwidth and compute power become limiting.

The GPU's 180 W TDP and IGP slot width indicate it is a mobile solution, designed for laptops or portable devices. The lack of power connectors suggests it is soldered or integrated into a system rather than a standalone card. Despite this, it delivers playable performance at 1080p across all settings, with the Low preset achieving 140 FPS. The GPU's compute score of 9342 in Passmark and 3DMark Steel Nomad score of 2994 further characterize its mid-range position.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

1920x1080 (1080p):

• Low: 140 FPS average. This is the highest measured FPS in the entire dataset, making it the best option for competitive play or high-refresh-rate displays.
• Medium: 94 FPS average, with a minimum of 80 and maximum of 108. The 28 FPS spread indicates some variance, but the frame rate stays well within playable territory.
• High: 79 FPS average. This is a solid result for a quality preset, though it represents a 15 FPS drop from Medium.
• Ultra: 60 FPS average. This is exactly the threshold for smooth 60 Hz displays, but the lack of min/max data means frame dips could cause stutter.

2560x1440 (1440p):

• Low: 96 FPS average. This is a strong result for 1440p, showing the combo can handle the higher resolution at lower settings without major compromise.
• Medium: 65 FPS average, with a minimum of 55 and maximum of 74. The 55 FPS minimum is borderline for fast-paced gameplay, but the average is acceptable.
• High: 55 FPS average. This is the same as the Medium minimum at this resolution, indicating the GPU is becoming stressed.
• Ultra: 42 FPS average. This is below the smooth playable threshold and should be avoided for serious gaming.

3840x2160 (4K):

• Low: 57 FPS average. This is surprisingly playable for 4K, though it requires the lowest settings preset.
• Medium: 38 FPS average, with a minimum of 32 and maximum of 44. The 32 FPS minimum would cause noticeable lag in combat situations.
• High: 32 FPS average. This is the same as the Medium minimum, making it impractical for gameplay.
• Ultra: 25 FPS average. This is the lowest measured result and is not recommended under any circumstances.

The data shows a clear pattern: the combo is best used at 1080p, where even Ultra settings hit 60 FPS. At 1440p, players should stick to Medium or Low for playable frame rates. At 4K, only Low settings are viable, and even then, the 57 FPS average is fragile. The Medium preset at 1080p offers the best overall experience with its 94 FPS average and 80-108 FPS range, balancing visual quality with smooth performance. The GPU's 12 GB VRAM is sufficient at all tested resolutions, so the frame rate drops are due to compute and bandwidth limits rather than memory capacity. This is a mid-range mobile combo that excels at 1080p gaming but struggles at 4K, making it suitable for portable gaming systems with 1080p or 1440p displays.