Rust

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

The Intel Core i7-12700K is a 12-core, 20-thread Alder Lake-S desktop processor with a base clock of 3.60 GHz and a boost clock of 5.00 GHz. It uses a hybrid architecture built on Intel's 10 nm process node, combining performance and efficiency cores to balance load across the 12 physical cores. The processor operates on the Intel Socket 1700 platform, supports dual-channel DDR4 and DDR5 memory, and features 25 MB of shared L3 cache alongside 1.25 MB of L2 cache per core and 80 KB of L1 cache per core.

Benchmark results place this CPU in the 84th percentile among all tested processors, with an average benchmark score of 35,287. In synthetic multi-threaded workloads, the chip scores 9,979 in 3DMark max threads, 19,784 in Cinebench R23 multicore, and 15,790 in Geekbench multicore. Single-thread performance is strong as well: the 3DMark single-thread score is 1,043, Cinebench R23 single-core reaches 1,850.5, and Geekbench single-core reports 2,308. These numbers suggest a processor that excels in both lightly threaded and heavily threaded scenarios, which matters for Rust because the game's simulation and entity processing can distribute work unevenly across cores.

In Rust, the measured FPS data shows that the CPU is not the primary limiting factor at most settings and resolutions. At 1080p Low, the combo achieves 235 FPS average, while at 1440p Low it reaches 207 FPS, and at 4K Low it still manages 141 FPS. The scaling from Low to Ultra settings at each resolution shows a consistent drop — from 235 to 150 FPS at 1080p, 207 to 103 FPS at 1440p, and 141 to 61 FPS at 4K — which indicates that the CPU maintains a high enough frame delivery ceiling to keep up with the GPU until the most demanding combinations are reached. The processor's boost clock of 5.00 GHz provides the single-thread responsiveness Rust needs for its main game thread, while the 12 cores handle background simulation, physics, and server-side entity updates.

The nearest rivals in the benchmark database include the Intel Core i5-13600T with a delta of -0.1%, the Intel Core i7-12700KF at -0.2%, the Intel Core i7-13700T at -0.3%, and the Intel Core 5 213PE at -0.4%. All four rivals score within a fraction of a percent of the i7-12700K, meaning that for CPU-bound sections of Rust, swapping to any of these alternatives would produce nearly identical frame rates. The i7-12700K's 20 threads are particularly relevant for Rust servers with many connected players, where the game's tick rate and entity updates can spawn a large number of concurrent tasks; the data shows the processor can sustain high average FPS even at 1080p, where CPU overhead is most exposed.

Settings Recommendations

The measured FPS data provides a clear hierarchy for settings at each resolution. At 1920x1080, the Low preset delivers 235 FPS average, Medium drops to 202 FPS, High falls to 190 FPS, and Ultra bottoms out at 150 FPS. The Medium preset reports a minimum FPS of 172 and a maximum of 232, giving a tight frame window that suggests consistent performance. For 1080p, Medium offers the best balance: it is only 33 FPS below Low but provides a significantly improved visual environment, and the 172 FPS minimum ensures that frame drops during intense firefights or base raids stay well above display refresh rates for most monitors.

At 2560x1440, Low produces 207 FPS, Medium 161 FPS, High 136 FPS, and Ultra 103 FPS. The Medium preset again shows a 136 FPS minimum and 185 FPS maximum, which is a wider spread than at 1080p but still within a playable range for competitive scenarios. High at 1440p drops to 136 FPS average, which is still smooth for most players, but the gap between Medium and High — 25 FPS — is larger than the gap between Low and Medium — 46 FPS. Choosing Medium at 1440p keeps the average above 160 FPS while maintaining a minimum above 135 FPS, which is the recommended setting for the best experience.

At 3840x2160, the numbers compress significantly. Low reaches 141 FPS, Medium 95 FPS, High 80 FPS, and Ultra 61 FPS. The Medium preset at 4K has a minimum of 81 FPS and a maximum of 109 FPS, which is the only 4K preset with both average and minimum FPS data available. Ultra at 4K dips to 61 FPS average, which is borderline for a survival shooter where quick reactions matter. The data indicates that 4K Medium is the sensible ceiling: it provides a 95 FPS average, which is 34 FPS higher than High and 34 FPS lower than Low, and the 81 FPS minimum keeps the experience fluid. For players who prioritize frame rate over visual fidelity, 4K Low at 141 FPS is the alternative, but the jump from Low to Medium adds measurable quality without halving the frame rate.

FAQ

Q: What is the highest average FPS this combo achieves at 1080p?

A: The highest average FPS at 1920x1080 is 235 FPS, achieved with the Low preset. Medium delivers 202 FPS, High 190 FPS, and Ultra 150 FPS.

Q: Does the RTX 5090 D bottleneck the i7-12700K in Rust?

A: The data suggests the GPU becomes the limiting factor only at 4K Ultra, where FPS drops to 61. At 1080p Low, the combo reaches 235 FPS, indicating the CPU can feed the GPU sufficiently at lower resolutions and settings.

Q: How much FPS is lost going from Low to Ultra at each resolution?

A: At 1080p, the drop is 85 FPS (235 to 150). At 1440p, the drop is 104 FPS (207 to 103). At 4K, the drop is 80 FPS (141 to 61).

Q: What is the minimum FPS recorded across all measured rows?

A: The only minimum FPS values in the data are 172 FPS at 1080p Medium, 136 FPS at 1440p Medium, and 81 FPS at 4K Medium. The lowest recorded minimum is 81 FPS at 4K Medium.

Q: How does the i7-12700K compare to its closest rival in average benchmark score?

A: The Intel Core i5-13600T has an average score of 35,305, which is 0.1% lower than the i7-12700K's 35,287. The i7-12700KF is 0.2% higher, and the i7-13700T is 0.3% higher.

Q: Is the RTX 5090 D's performance in Rust consistent with its overall benchmark percentile?

A: The GPU sits in the 92nd percentile among all GPUs with an average benchmark score of 77,712. The measured FPS in Rust shows strong results, with 235 FPS at 1080p Low and 141 FPS at 4K Low, indicating the card performs well in this title.

How This Combo Ranks

The combination of the Intel Core i7-12700K and the NVIDIA GeForce RTX 5090 D ranks 42nd out of 2,953 tested combos in Rust, placing it in the top 1.4% of all configurations. This rank reflects the overall performance across all measured resolutions and settings, and it is a strong result given that the i7-12700K is a 12th-generation processor while the RTX 5090 D is a current-generation flagship GPU.

The ranking implies that the combo outperforms the vast majority of systems tested in Rust, which aligns with the high FPS numbers at 1080p and 1440p. However, the rank also suggests there are 41 combos that perform better, likely pairing newer high-core-count CPUs with the same or similar GPUs. The i7-12700K's 84th percentile CPU score and the RTX 5090 D's 92nd percentile GPU score combine to produce a system that is well above average but not at the absolute top of the database.

For context, the CPU's nearest rivals — the i5-13600T, i7-12700KF, i7-13700T, and Core 5 213PE — all have average benchmark scores within 0.4% of the i7-12700K. This means that any of these CPUs paired with the RTX 5090 D would likely land in a similar rank position. The GPU's nearest rivals in the database — the AMD Radeon RX 6650M XT, RX 6850M XT, and two NVIDIA Tesla P100 variants — are not comparable in gaming performance despite similar average benchmark scores, as the benchmark average includes compute workloads that favor different architectures.

The rank of 42 out of 2,953 is particularly notable because Rust is a CPU-intensive survival game with complex server-side simulation. The fact that this combo still reaches 235 FPS at 1080p Low and 150 FPS at 1080p Ultra indicates that the i7-12700K's 12 cores and 20 threads are sufficient to avoid bottlenecking the RTX 5090 D at most settings. Only at 4K Ultra, where the GPU's rendering load increases substantially, does the frame rate drop to 61 FPS, which is still above the 60 FPS threshold.

GPU Role

The NVIDIA GeForce RTX 5090 D is built on the Blackwell 2.0 architecture using TSMC's 5 nm process node, with a die size of 750 mm² and 92,200 million transistors. The GPU features 32 GB of GDDR7 memory on a 512-bit bus, delivering 1.79 TB/s of memory bandwidth. Its clock speeds are a base of 2017 MHz and a boost of 2407 MHz, with memory running at 1750 MHz (28 Gbps effective). The card has 21,760 shading units, 680 texture mapping units, 176 ROPs, 170 ray tracing cores, and 680 tensor cores, producing 104.8 TFLOPS of FP32 performance and a pixel rate of 423.6 GPixel/s.

In Rust, the GPU's role becomes more pronounced as resolution and settings increase. At 1080p Low, the combo achieves 235 FPS, which is likely near the CPU's frame delivery limit. Moving to 1080p Ultra drops the average to 150 FPS, a 36% reduction that reflects the increased GPU workload from higher-quality textures, shadows, and post-processing effects. At 1440p, the same transitions produce 207 FPS at Low and 103 FPS at Ultra, a 50% reduction. At 4K, the GPU is clearly the dominant factor: Low produces 141 FPS, but Ultra falls to 61 FPS, a 57% reduction from Low.

The 32 GB VRAM capacity is far beyond what Rust requires at any resolution, as the game's largest texture packs and draw distances fit within a fraction of that memory. The 1.79 TB/s bandwidth is more relevant; Rust's open-world environment streams terrain, structures, and entity textures continuously, and the high bandwidth ensures that texture streaming does not cause hitches. The measured minimum FPS values — 172 at 1080p Medium, 136 at 1440p Medium, and 81 at 4K Medium — indicate that frame pacing remains stable even during scene complexity spikes, which is a sign that the GPU's memory subsystem is handling Rust's streaming demands efficiently.

The GPU's benchmark percentile of 92 places it well above average, and its average benchmark score of 77,712 is driven by strong results in compute and graphics tests. In Rust specifically, the 4K Medium result of 95 FPS average shows that the RTX 5090 D can handle 4K gaming comfortably at medium settings, while 4K Low at 141 FPS is a viable option for high-refresh-rate 4K displays. The card's nearest rivals in the database, such as the RX 6650M XT and RX 6850M XT, have similar average benchmark scores but are mobile GPUs with far lower power envelopes and memory bandwidth, so their Rust performance would be substantially worse in practice.

Measured FPS Breakdown

At 1920x1080, the four settings produce a clear stepwise progression. Low averages 235 FPS. Medium averages 202 FPS, with a minimum of 172 and a maximum of 232. High averages 190 FPS. Ultra averages 150 FPS. The spread from Low to Ultra is 85 FPS, and the gap between Medium and High is 12 FPS, which is the smallest step in the 1080p set.

At 2560x1440, the averages are 207 FPS for Low, 161 FPS for Medium, 136 FPS for High, and 103 FPS for Ultra. The Medium preset reports a minimum of 136 FPS and a maximum of 185 FPS. The gap from Low to Medium is 46 FPS, from Medium to High is 25 FPS, and from High to Ultra is 33 FPS. The total spread from Low to Ultra is 104 FPS, which is larger than at 1080p because the GPU workload scales with pixel count.

At 3840x2160, the averages compress to 141 FPS for Low, 95 FPS for Medium, 80 FPS for High, and 61 FPS for Ultra. The Medium preset has a minimum of 81 FPS and a maximum of 109 FPS. The gaps are 46 FPS from Low to Medium, 15 FPS from Medium to High, and 19 FPS from High to Ultra. The total spread is 80 FPS, narrower than at 1440p because the GPU is already heavily loaded at 4K Low.

Comparing across resolutions at the same settings: Low goes from 235 FPS at 1080p to 207 FPS at 1440p to 141 FPS at 4K. Medium goes from 202 to 161 to 95. High goes from 190 to 136 to 80. Ultra goes from 150 to 103 to 61. The percentage drop from 1080p to 4K is 40% for Low, 53% for Medium, 58% for High, and 59% for Ultra. This pattern shows that the GPU becomes progressively more dominant as settings increase, which is expected given the RTX 5090 D's massive compute resources.

Resolution Scaling

The FPS drop from 1080p to 4K reveals how the workload shifts between CPU and GPU. At Low settings, the 1080p result is 235 FPS, which is likely capped by the CPU's ability to process game logic and issue draw calls. At 1440p Low, the FPS drops to 207, a 12% reduction, and at 4K Low it drops to 141, a 40% reduction from 1080p. The relatively small drop from 1080p to 1440p suggests that at Low settings, the CPU is still a co-limiter, and the GPU has enough headroom to handle the extra pixels without a proportional FPS loss.

At Medium settings, the pattern shifts. The 1080p average is 202 FPS, 1440p is 161 FPS (a 20% drop), and 4K is 95 FPS (a 53% drop from 1080p). The 4K Medium result of 95 FPS is less than half of the 1080p Medium result, indicating that the GPU is now the dominant constraint. The minimum FPS at 4K Medium is 81, which is 40% lower than the 1080p Medium minimum of 172, confirming that the GPU's rendering load at 4K is causing frame rate reductions that the CPU cannot compensate for.

At High settings, the scaling is steeper: 190 FPS at 1080p, 136 FPS at 1440p (a 28% drop), and 80 FPS at 4K (a 58% drop). At Ultra, the results are 150, 103, and 61 FPS, with a 59% drop from 1080p to 4K. The increasing percentage drop with higher settings demonstrates that Rust's graphics options — particularly shadow quality, draw distance, and texture filtering — impose a multiplicative cost on the GPU as resolution increases. The RTX 5090 D's 32 GB of VRAM and 1.79 TB/s bandwidth are sufficient to handle the data, but the sheer pixel throughput at 4K Ultra (61 FPS) shows that even a flagship GPU is strained by the most demanding configuration.

The data indicates that the limiting component changes based on resolution and settings. Below 1440p Medium, the i7-12700K's 12 cores and 5.00 GHz boost clock are sufficient to keep FPS high, and the GPU is not fully utilized. At 4K High and Ultra, the GPU becomes the clear bottleneck, with FPS dropping to 80 and 61 respectively. At 1440p Ultra and 4K Medium, the system is balanced, with both CPU and GPU contributing to the frame rate. For players seeking maximum FPS, 1080p Low at 235 FPS is the ceiling, while 4K Medium at 95 FPS offers the best visual quality per frame at the highest resolution.