Rust

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

The measured FPS data for Rust with the Intel Core i5-12600KF and AMD Radeon RX 7900 XT shows a clear and consistent scaling pattern as resolution increases. At 1080p Low settings, the combo produces 230 FPS average. Moving to 1440p Low drops that to 167 FPS, a reduction of 63 FPS (approximately 27% lower). At 4K Low, the average falls to 99 FPS, which is 131 FPS below the 1080p figure — a 57% drop from the starting point.

The scaling behavior under High settings follows a similar trajectory but with smaller absolute values. The 1080p High result is 137 FPS, 1440p High yields 95 FPS, and 4K High produces 56 FPS. The percentage drop from 1080p to 4K at High settings is approximately 59%, slightly steeper than the Low preset's 57% decline. Medium settings show 163 FPS at 1080p, 112 FPS at 1440p, and 66 FPS at 4K — a 60% reduction across the resolution range. Ultra settings start at 105 FPS (1080p), fall to 72 FPS (1440p), and bottom out at 42 FPS (4K), representing a 60% decline.

The pattern is remarkably uniform across all four settings presets: the transition from 1080p to 1440p costs roughly 30-35% of performance, while the jump to 4K costs another 30-35% relative to the previous step. This near-linear scaling with pixel count — 1080p has approximately 2.1 million pixels, 1440p has 3.7 million, and 4K has 8.3 million — suggests that the rendering workload is scaling predictably with resolution rather than hitting a sudden bottleneck.

The data indicates that this combination is well-balanced for Rust at 1080p and 1440p, where even the most demanding Ultra preset maintains playable framerates (105 FPS and 72 FPS respectively). At 4K, the GPU becomes the dominant constraint, as evidenced by the steep drop to 42 FPS on Ultra and 56 FPS on High. The fact that Low settings at 4K still achieve 99 FPS shows that the GPU has headroom when the visual load is reduced, but the CPU is not the limiting factor at 4K — otherwise the FPS would remain flat regardless of resolution.

The diminishing returns from lowering settings at 4K further confirm the GPU-bound nature at that resolution. Moving from Ultra to Low at 4K gains 57 FPS (from 42 to 99), whereas the same settings change at 1080p gains 125 FPS (from 105 to 230). The GPU is doing proportionally more work per frame at higher resolutions, and the CPU has ample capacity to feed it, as evidenced by the strong 1080p performance.

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

The AMD Radeon RX 7900 XT brings substantial hardware to Rust's rendering pipeline. Its Navi 31 chip is built on TSMC's 5 nm process and packs 57,700 million transistors across a 529 mm² die. The GPU operates with a base clock of 1387 MHz, a game clock of 2025 MHz, and a boost clock of 2394 MHz, with memory running at 2500 MHz (20 Gbps effective). This clock configuration allows the card to deliver 51.48 TFLOPS of FP32 compute, 804.4 GTexel/s texture fill rate, and 459.6 GPixel/s pixel fill rate.

Memory capacity is a notable strength for Rust, which is known for its large, persistent world and frequent asset streaming. The 20 GB GDDR6 frame buffer on a 320-bit bus provides 800.0 GB/s of bandwidth. At 4K Ultra settings, where the measured FPS falls to 42, the game is likely pushing significant texture and geometry data through this memory subsystem. The fact that the RX 7900 XT maintains positive scaling from 1080p to 4K across all presets suggests the 20 GB capacity is sufficient — there is no evidence of VRAM spillover causing sudden performance cliffs.

The GPU's 84 ray accelerators are present but Rust does not heavily utilize ray tracing in its standard rendering path, so their impact on these measured results is likely minimal. The 5376 shading units, 336 texture mapping units, and 192 ROPs form the core rasterization engine that drives the FPS numbers observed. The pixel rate of 459.6 GPixel/s is particularly relevant for 4K output, where the GPU must fill over 8.3 million pixels per frame.

Comparing the RX 7900 XT to its nearest rivals in the benchmark database, the data shows it sits close to several very different GPUs. The AMD Radeon 660M has an average benchmark score of 13812, just 0.5% higher than the RX 7900 XT's 13745. The NVIDIA RTX A2000 Mobile scores 13821 (0.5% higher), and the AMD Radeon RX 570X scores 13871 (0.9% higher). The AMD Radeon RX 9070 XT scores 13543, which is 1.5% lower. This grouping reflects the average of all benchmark tests, not game-specific performance, but it places the RX 7900 XT in a mid-pack position relative to these particular entries.

The GPU's 55th percentile ranking among all GPUs and its end-of-life production status suggest it is a capable but not class-leading part in the broader database context. For Rust specifically, the measured data shows the GPU handles 1080p and 1440p with ease, maintaining over 100 FPS on Medium at both resolutions, and only struggling at 4K Ultra where the pixel workload overwhelms the rendering units.

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

The Intel Core i5-12600KF is a 10-core, 16-thread processor based on the Alder Lake architecture, built on Intel's 10 nm process with a 215 mm² die size. It runs at a base clock of 3.70 GHz with a boost clock of 4.90 GHz, and its 125W TDP places it in the performance desktop segment. The cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 20 MB of shared L3 cache. Memory support extends to both DDR4 and DDR5 in dual-channel configuration, with 20 PCIe Gen 4 lanes from the CPU.

Rust is a game that frequently stresses CPU performance due to its large player counts, complex building mechanics, and server-side simulation that clients must track. The 12600KF's 16 threads provide substantial headroom for these workloads. Benchmark data shows the processor achieving 23,391 in Cinebench R23 multi-core and 3,302 in single-core, with a Geekbench multi-core score of 12,137 and single-core of 2,157. The PassMark multi-thread score of 27,575 further confirms its threading capability.

The processor's percentile ranking of 79 among all CPUs places it well above the median, and its average benchmark score of 27,799 sits nearly exactly between its nearest rivals. The Intel Core i9-10900K scores 27,872 (0.3% higher), the AMD Ryzen 7 5800X3D scores 27,896 (0.3% higher), and the AMD Ryzen 7 6800U scores 27,887 (0.3% higher). The AMD Ryzen 5 8500GE scores 27,712, which is 0.3% lower. This tight clustering indicates the 12600KF delivers performance on par with these established parts in synthetic benchmarks.

In the measured FPS data, the CPU's influence is most visible at 1080p where frame rates are highest. The 230 FPS average at 1080p Low requires the CPU to deliver draw calls and game logic updates at a rate exceeding 200 frames per second. The fact that this combo achieves 230 FPS at 1080p Low — and still 137 FPS at 1080p High — suggests the CPU is keeping pace with the GPU's output capacity at this resolution. If the CPU were the bottleneck, we would expect the FPS to plateau around the same value regardless of resolution, which is not the case here.

The single-thread performance is particularly relevant for Rust, which relies heavily on a main game thread for many operations. The Cinebench R23 single-core score of 3,302 and PassMark single-thread score of 3,925 indicate strong per-core throughput. The boost clock of 4.90 GHz provides the raw frequency needed for latency-sensitive game logic, and the 20 MB L3 cache helps maintain data locality for frequently accessed game state.

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

The measured FPS data provides a complete picture across three resolutions and four settings presets. At 1920x1080, the combo produces 230 FPS on Low, 163 FPS on Medium, 137 FPS on High, and 105 FPS on Ultra. The Medium preset at 1080p includes a minimum of 138 FPS and maximum of 187 FPS, showing a 49 FPS range during gameplay variance. The other 1080p presets only report average values without min/max data.

Moving to 2560x1440, the averages are 167 FPS on Low, 112 FPS on Medium, 95 FPS on High, and 72 FPS on Ultra. The Medium preset at 1440p shows a minimum of 95 FPS and maximum of 129 FPS, a 34 FPS range. The 1440p results represent a consistent step down from 1080p, with each preset losing roughly 30-35% of its average FPS. For example, High drops from 137 to 95 (a 42 FPS loss), and Low drops from 230 to 167 (a 63 FPS loss).

At 3840x2160, the averages fall to 99 FPS on Low, 66 FPS on Medium, 56 FPS on High, and 42 FPS on Ultra. The Medium preset at 4K reports a minimum of 56 FPS and maximum of 76 FPS, a 20 FPS range. This narrowing range at higher resolutions suggests more consistent frame pacing as the GPU becomes the primary limiter. The 4K Low result of 99 FPS remains playable, but the Ultra preset at 42 FPS falls below the 60 FPS threshold that many players consider the minimum for smooth gameplay.

Comparing settings within each resolution, the gap between Low and Ultra grows as resolution decreases. At 1080p, the spread is 125 FPS (230 Low vs 105 Ultra). At 1440p, the spread is 95 FPS (167 Low vs 72 Ultra). At 4K, the spread narrows to 57 FPS (99 Low vs 42 Ultra). This pattern reinforces the GPU-bound analysis at 4K — the GPU cannot leverage the reduced visual complexity of Low settings as effectively when pixel count is the dominant cost.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of Intel Core i5-12600KF and AMD Radeon RX 7900 XT ranks 657th out of 3,723 tested combos in Rust. This places the combo in the 82nd percentile of all tested configurations, meaning it outperforms roughly 82% of the other CPU-GPU pairings in the database. The rank of 657 out of 3,723 indicates a solidly upper-tier position, though not among the elite top 100 configurations.

Given the individual component rankings — the CPU at the 79th percentile among all CPUs and the GPU at the 55th percentile among all GPUs — the combined 82nd percentile ranking in Rust is notable. This suggests the pair works particularly well together for this specific game, outperforming what the individual component percentiles alone might predict. The CPU's strong single-thread performance likely contributes to Rust's responsiveness, while the GPU's high memory bandwidth and VRAM capacity handle the game's large world streaming.

The deltaPct values from the CPU's nearest rivals provide context for how close the 12600KF is to other processors. The AMD Ryzen 7 5800X3D, which is often favored for gaming due to its 3D V-Cache, scores only 0.3% higher on average. The Intel Core i9-10900K, a higher-tier part from the previous generation, also scores only 0.3% higher. This tight grouping means the 12600KF is not leaving meaningful performance on the table relative to these alternatives in the average benchmark suite, though game-specific behavior can vary.

The GPU's nearest rivals in the average benchmark ranking are mostly lower-tier parts (integrated Radeon 660M, mobile RTX A2000, older RX 570X), which reflects the RX 7900 XT's mid-pack position in the overall benchmark distribution. The RX 9070 XT, a newer part, scores 1.5% lower on average — a small but notable gap that suggests the 7900 XT still holds its own against a next-generation successor in synthetic tests.

FAQ

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

A: The data shows 2560x1440 provides the best balance of visual quality and performance. At 1440p, even Ultra settings maintain 72 FPS average, while High achieves 95 FPS and Medium reaches 112 FPS. The 1080p results are higher (105-230 FPS) but the resolution advantage of 1440p may justify the modest FPS trade-off.

Q: Can this combo handle 4K gaming in Rust?

A: At 4K, the combo produces 99 FPS on Low, 66 FPS on Medium, 56 FPS on High, and 42 FPS on Ultra. Only Low settings provide a consistently smooth experience above 60 FPS. Medium at 4K has an average of 66 FPS but a minimum of 56 FPS, which may cause occasional stutter in demanding scenes.

Q: How much performance is lost when switching from Low to Ultra settings?

A: At 1080p, the drop from Low to Ultra is 125 FPS (230 down to 105), a 54% reduction. At 1440p, the drop is 95 FPS (167 down to 72), a 57% reduction. At 4K, the drop is 57 FPS (99 down to 42), a 58% reduction. The relative loss is consistent across resolutions.

Q: What is the minimum FPS recorded for this combo?

A: The only presets with min FPS data are Medium settings. At 1080p Medium, the minimum is 138 FPS. At 1440p Medium, the minimum is 95 FPS. At 4K Medium, the minimum is 56 FPS. Other presets do not report minimum values in the measured data.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: At 1080p, the combo achieves 230 FPS on Low and 105 FPS on Ultra. The large gap between settings indicates the GPU is the primary limiter even at this resolution, since lowering settings produces substantial FPS gains. If the CPU were the bottleneck, the FPS would remain similar regardless of graphics settings.

Q: How does this combo compare to its nearest component rivals?

A: The CPU scores are within 0.3% of the Intel Core i9-10900K, AMD Ryzen 7 5800X3D, and AMD Ryzen 7 6800U in average benchmarks. The GPU scores are within 0.5% of the AMD Radeon 660M and NVIDIA RTX A2000 Mobile, and 1.5% lower than the AMD Radeon RX 9070 XT.

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

Based on the measured FPS data, the Medium preset at 2560x1440 offers the most compelling balance of visual quality and performance. The 112 FPS average with a minimum of 95 FPS and maximum of 129 FPS provides smooth gameplay that exceeds the typical 60 FPS target by a wide margin, while still delivering significantly better visuals than Low settings. The 1440p Medium result also leaves headroom for frame rate fluctuations during intense moments without dropping below playable levels.

For players prioritizing maximum smoothness at 1080p, the High preset at 137 FPS is the strongest recommendation. It delivers nearly double the FPS of Ultra (105 FPS) while providing better visuals than Medium (163 FPS but with the visual compromises of that preset). The 137 FPS at 1080p High represents a balanced point where the GPU is still producing high frame rates without the performance cost of Ultra's extra effects.

At 4K, the Low preset at 99 FPS is the only option that consistently exceeds 60 FPS. Medium at 4K averages 66 FPS but dips to a minimum of 56 FPS, which could cause perceptible stutter during heavy load. The 4K Ultra preset at 42 FPS is below the threshold for smooth gameplay and should only be considered for static scenes or screenshot purposes. For 4K gaming, players should accept the visual reduction of Low settings to maintain responsive gameplay.

The Ultra preset across all resolutions shows diminishing returns. At 1080p Ultra, the 105 FPS is still playable, but it costs 32 FPS compared to High (137 FPS) for what is likely a marginal visual improvement in Rust's art style. At 1440p Ultra, the 72 FPS is acceptable but risks dipping below 60 FPS in busy areas, while the High preset at 95 FPS provides a safer margin. The data consistently points to High as the optimal visual fidelity tier, with Medium as the fallback for higher resolutions or when targeting very high frame rates.