Thief

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

The measured FPS data for Thief reveals a clear scaling pattern as resolution climbs from 1920x1080 to 3840x2160. At Ultra settings, the average frame rate drops from 182.2 FPS at 1080p to 134.9 FPS at 1440p, and finally to 79.5 FPS at 4K. That represents a substantial 56.4% reduction from 1080p to 4K, indicating that the rendering load at higher resolutions is heavily taxing the GPU. The RTX 4090’s 24 GB of GDDR6X memory and 1.01 TB/s bandwidth are clearly being pushed, yet the card still manages to deliver playable frame rates even at the most demanding resolution.

Looking at Low settings, the scaling pattern shifts. At 1080p, the average FPS is 224, dropping to 196.7 at 1440p and 146.6 at 4K. The percentage drop from 1080p to 4K at Low settings is 34.6%, which is considerably less severe than the 56.4% drop seen at Ultra. This suggests that at lower settings, the CPU plays a more significant role in limiting performance, as the GPU has less work to do per frame. The Ryzen 5 9600X, with its 6 cores and 12 threads, appears to be keeping pace well, but the data implies that at 1080p Low, the CPU is likely the primary bottleneck.

At Medium settings, the frame rates sit between Low and High: 203.3 FPS at 1080p, 180.2 at 1440p, and 114.1 at 4K. The scaling from 1440p to 4K shows a 36.7% drop, which is steeper than the 11.3% drop from 1080p to 1440p. This non-linear behavior indicates that the GPU becomes increasingly dominant as resolution rises, with the RTX 4090’s raw compute power (82.58 TFLOPS FP32) being the determining factor at 4K.

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

The AMD Ryzen 5 9600X is a 6-core, 12-thread processor based on the Zen 5 architecture (Granite Ridge), built on a 4 nm process at TSMC. Its base clock of 3.90 GHz and boost clock of 5.40 GHz provide strong single-thread performance, which is crucial for a game like Thief that was released in 2014 and likely relies heavily on a few primary threads. The CPU’s benchmark scores support this: a single-thread score of 1253 in 3DMark and 3603 in Cinebench R23 single-core indicate excellent per-core throughput.

In Thief, the CPU’s influence is most visible at lower resolutions and settings. At 1080p Low, the 224 FPS average suggests that the CPU is capable of feeding the RTX 4090 with enough draw calls to reach very high frame rates. However, the fact that Ultra settings at 1080p yield 182.2 FPS — a drop of 18.7% from Low — indicates that the additional graphical workload is shifting the balance toward the GPU. The CPU’s 32 MB of shared L3 cache and dual-channel DDR5 memory support (89.6 GB/s bandwidth) help maintain smooth performance, but the data shows that Thief does not heavily stress multi-threaded capabilities.

The Ryzen 5 9600X’s nearest rivals in overall benchmark scores include the Intel Core i5-13490F (deltaPct 0.3%) and AMD Ryzen 5 230 (deltaPct 0.3%), with the AMD Ryzen 7 8845HS slightly ahead at -0.4% deltaPct. This places the CPU in a competitive mid-range position, but for Thief specifically, the single-thread strength of the 9600X is what matters most. The measured FPS numbers suggest that even at 4K Ultra, the CPU is not the limiting factor, as the 79.5 FPS result is likely constrained by the GPU’s pixel fill rate and shading throughput.

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

The NVIDIA GeForce RTX 4090 is a flagship GPU with 24 GB of GDDR6X memory on a 384-bit bus, providing 1.01 TB/s of bandwidth. Its base clock of 2235 MHz and boost clock of 2520 MHz, combined with 16384 shading units and 512 texture mapping units, deliver massive compute throughput. The card’s 82.58 TFLOPS FP32 performance and 443.5 GPixel/s pixel rate are directly relevant to Thief’s rendering demands, especially at 4K where pixel count quadruples from 1080p.

The GPU’s role in Thief becomes increasingly dominant as resolution and settings increase. At 4K Ultra, the average FPS of 79.5 demonstrates that the RTX 4090 is being fully utilized, with the frame rate dropping by 56.4% compared to 1080p Ultra. The VRAM capacity of 24 GB is more than sufficient for Thief, which was designed for hardware from 2014, but the memory bandwidth and shading throughput are what drive the performance differences between settings. At High settings, the 4K frame rate improves to 86.7 FPS, while Medium reaches 114.1 FPS and Low hits 146.6 FPS.

The RTX 4090’s benchmark scores place it at the 91st percentile among all GPUs, with an average benchmark score of 66473. Its nearest rivals include the NVIDIA Tesla T4 (deltaPct -0.4%), Tesla P40 (deltaPct 0.5%), and AMD Radeon Pro Vega 56 (deltaPct -0.9%). In Thief, the GPU’s performance at 4K is impressive but not overwhelming, suggesting that the game’s engine — likely from the early 2010s — does not fully exploit the RTX 4090’s modern features like ray tracing cores (128 RT cores) or tensor cores (512). The data indicates that raw rasterization power is what matters here, and the RTX 4090 delivers that in spades.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific combination of AMD Ryzen 5 9600X and NVIDIA GeForce RTX 4090 achieves a rank of 8 out of 1642 tested combos in Thief. This top-1% placement is remarkable, given that the CPU is a mid-range 6-core part while the GPU is a flagship. The ranking suggests that in Thief, the GPU is the dominant factor in determining overall performance, and the Ryzen 5 9600X does not hold the system back significantly.

The fact that this combo ranks 8th overall means it outperforms the vast majority of systems, including many with more expensive or more powerful CPUs. This is consistent with the resolution scaling analysis: Thief is heavily GPU-bound at higher resolutions, and the RTX 4090’s sheer compute power carries the system to elite performance levels. The CPU’s single-thread strength ensures that frame times remain consistent, avoiding the CPU-bound stutters that could plague weaker processors.

However, the rank of 8 also implies that there are 7 other combos that achieve even higher frame rates in Thief. While the exact compositions of those combos are not provided, it is reasonable to infer that they likely pair the RTX 4090 with even stronger CPUs, such as higher-core-count Ryzen 9 or Core i9 processors. The data shows that the Ryzen 5 9600X, while capable, may leave a small amount of performance on the table in CPU-light scenarios like 1080p Low, where the 224 FPS result could potentially be higher with a more powerful processor.

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

The measured FPS data provides clear guidance on which settings preset delivers the best balance of visual quality and performance. At 4K, the Ultra preset yields 79.5 FPS, which is playable but slightly below the 80 FPS threshold that many gamers prefer for smooth motion. Dropping to High improves the frame rate to 86.7 FPS, a 9.1% gain with a modest reduction in visual fidelity. For 4K gaming, High settings appear to be the sweet spot, providing a comfortable margin above 60 FPS while maintaining most graphical enhancements.

At 1440p, the Ultra preset achieves 134.9 FPS, which is well above the 60 FPS baseline and even exceeds the 120 FPS mark favored by competitive players. High settings at 1440p reach 144.2 FPS, while Medium hits 180.2 FPS. For 1440p users, Ultra is the recommended choice, as it offers the best visual quality without sacrificing smoothness. The 134.9 FPS result is more than sufficient for high-refresh-rate monitors.

At 1080p, all presets deliver frame rates above 180 FPS, with Low reaching 224 FPS and Medium at 203.3 FPS. The Ultra preset at 1080p yields 182.2 FPS, which is still exceptionally smooth. For 1080p displays, Ultra is the clear recommendation, as the performance headroom is so large that there is no reason to compromise on visuals. The data shows that this combo can handle the maximum settings at 1080p with ease.

FAQ

Q: What is the average FPS at 4K Ultra settings?

A: The measured average FPS at 3840x2160 with Ultra settings is 79.5 FPS.

Q: How much faster is 1080p Low compared to 1080p Ultra?

A: At 1920x1080, Low settings achieve 224 FPS while Ultra achieves 182.2 FPS, making Low approximately 23% faster.

Q: Does the Ryzen 5 9600X bottleneck the RTX 4090 in Thief?

A: The data shows minimal bottlenecking; at 4K Ultra the frame rate is 79.5 FPS, and at 1080p Low it reaches 224 FPS, indicating the CPU keeps pace even at low resolutions.

Q: What is the best preset for 1440p gaming?

A: Ultra settings at 2560x1440 provide 134.9 FPS, making it the best choice for smooth high-resolution gameplay.

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

A: This combo ranks 8th out of 1642 tested combinations in Thief.

Q: Is 4K playable with this hardware?

A: Yes, even at 4K Ultra the average FPS is 79.5, and at High settings it improves to 86.7 FPS, both comfortably above 60 FPS.

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

At 1920x1080, the measured average FPS values are: Low 224, Medium 203.3, High 186.3, and Ultra 182.2. The spread from Low to Ultra is 41.8 FPS, representing an 18.7% reduction in performance at the highest settings. This indicates that at 1080p, the CPU and GPU combination has significant headroom, with even the most demanding preset delivering frame rates well above the refresh rate of most monitors.

At 2560x1440, the average FPS values are: Low 196.7, Medium 180.2, High 144.2, and Ultra 134.9. The drop from Low to Ultra is 61.8 FPS, a 31.4% reduction. The larger percentage drop compared to 1080p (18.7%) shows that the GPU is becoming more of a limiting factor at this resolution, as the increased pixel count demands more shading and texture work.

At 3840x2160, the average FPS values are: Low 146.6, Medium 114.1, High 86.7, and Ultra 79.5. The drop from Low to Ultra is 67.1 FPS, a 45.8% reduction. This is the steepest decline across all resolutions, confirming that 4K places the greatest strain on the GPU. The difference between High and Ultra at 4K is 7.2 FPS, suggesting that the Ultra preset’s additional effects are relatively inexpensive in this game. Across all resolutions, the data shows a consistent pattern: the RTX 4090 dominates performance at lower settings, while the gap between settings narrows as resolution increases, reflecting the GPU’s finite pixel processing capacity.