Thief

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

The Intel Core i5-12600KF is a 10-core, 16-thread Alder Lake-S processor with a base clock of 3.70 GHz and a boost clock of 4.90 GHz. Its hybrid architecture combines performance and efficiency cores, with 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 20 MB of shared L3 cache. The chip's 3DMark scores paint a clear picture of scaling: single-thread score is 1016, 2-thread is 1995, 4-thread is 3806, 8-thread is 6128, and max-thread is 7952. This near-linear scaling from 2 to 8 threads, and modest gain beyond 8, suggests the processor handles lightly-threaded workloads efficiently while showing diminishing returns past 8 threads.

In Thief, a 2014 stealth title, the CPU's performance is sufficient to avoid bottlenecking the system at most settings. The game's engine benefits from strong single-thread performance, where the 12600KF delivers a Cinebench R23 single-core score of 3302 and a 3DMark single-thread score of 1016. Multi-threaded capabilities are robust as well, evidenced by a Cinebench R23 multi-core score of 23391 and a Geekbench multi-core score of 12137. The processor sits at the 79th percentile among all CPUs, with an average benchmark score of 27799. Its nearest rivals include the Intel Core i9-10900K (delta -0.3%), AMD Ryzen 5 8500GE (delta 0.3%), AMD Ryzen 7 6800U (delta -0.3%), and AMD Ryzen 7 5800X3D (delta -0.3%) — all within a fraction of a percent, indicating the 12600KF's performance tier is tightly clustered.

The measured FPS data shows that at 1080p, even at Ultra settings, the system achieves 155 FPS average, while at Low settings it reaches 192 FPS. The gap between Low and Ultra at 1080p is only 37 FPS (192 vs 155), which suggests the CPU is keeping pace even as GPU load increases. At 4K Ultra, the average drops to 87 FPS, a much larger decline relative to the 1080p Ultra result, indicating the GPU becomes the limiting factor at higher resolutions. The CPU's 10 cores and 16 threads provide ample headroom for the game's AI, physics, and rendering thread management, allowing the RTX 5090 D to stretch its legs at lower resolutions.

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

Examining the measured FPS across all settings and resolutions, the Medium preset emerges as the balanced choice. At 1080p Medium, the system delivers 174 FPS average with a minimum of 148 FPS and maximum of 200 FPS. This is only 18 FPS below the Low preset's 192 FPS average, but the visual quality improvement from Low to Medium is typically substantial in a game like Thief, where lighting and shadow detail matter for stealth gameplay.

At 1440p, Medium produces 153 FPS average (minimum 130, maximum 176), which remains well above the 144 Hz refresh rate common on high-end monitors. The High preset at 1440p yields 139 FPS, and Ultra drops to 137 FPS — a minimal difference between High and Ultra, suggesting the game's Ultra settings add little beyond High at this resolution. At 4K, Medium delivers 120 FPS average (minimum 102, maximum 138), which is still playable on high-refresh 4K displays, while High drops to 92 FPS and Ultra to 87 FPS.

The Low preset offers the highest frame rates at every resolution: 192 FPS at 1080p, 169 FPS at 1440p, and 142 FPS at 4K. However, the jump from Low to Medium costs only 18 FPS at 1080p, 16 FPS at 1440p, and 22 FPS at 4K, while providing a significant visual upgrade. The data suggests Medium is the sweet spot for this combination. For players prioritizing maximum smoothness on a 240 Hz display, Low at 1080p (192 FPS) or 1440p (169 FPS) would be the choice. For those wanting the best image quality without sacrificing playability, High at 1440p (139 FPS) or Medium at 4K (120 FPS) are the strongest options.

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

The resolution scaling pattern in Thief reveals the classic transition from CPU-bound to GPU-bound behavior. At Low settings, the frame rate drops from 192 FPS at 1080p to 169 FPS at 1440p (an 11.9% decrease), then to 142 FPS at 4K (a further 16% decrease). The relatively modest drop from 1080p to 1440p at Low settings — only 23 FPS — indicates the CPU is still playing a significant role at 1080p, preventing the GPU from fully saturating.

At Medium settings, the progression is 174 FPS (1080p) → 153 FPS (1440p) → 120 FPS (4K). The 4K result is 31% lower than the 1080p result, a steeper decline than at Low settings, showing the GPU load increasing as settings rise. At High settings, the pattern continues: 157 FPS (1080p) → 139 FPS (1440p) → 92 FPS (4K). The drop from 1440p to 4K at High is 47 FPS (33.8%), while the drop from 1080p to 1440p is only 18 FPS (11.5%).

Ultra settings show the most dramatic scaling: 155 FPS (1080p) → 137 FPS (1440p) → 87 FPS (4K). The 68 FPS gap between 1080p and 4K at Ultra represents a 44% reduction. This steep decline, combined with the fact that 1080p Ultra (155 FPS) is nearly identical to 1080p High (157 FPS), strongly suggests the GPU is the primary bottleneck at higher resolutions and settings. The CPU can push 155+ FPS even at Ultra 1080p, but the RTX 5090 D's rendering load at 4K Ultra (87 FPS) becomes the limiting factor.

The data indicates that the RTX 5090 D, despite being a top-tier GPU with a 92nd percentile ranking among all GPUs, faces a heavy scene complexity in Thief at 4K. The gap between 1440p and 4K grows as settings increase — 27 FPS at Low, 33 FPS at Medium, 47 FPS at High, and 50 FPS at Ultra — confirming that higher settings amplify the GPU's load disproportionately at 4K.

# FAQ

Q: Is the Intel Core i5-12600KF fast enough for Thief at high refresh rates?

A: Yes. The data shows the CPU supports up to 192 FPS at 1080p Low and 155 FPS at 1080p Ultra, indicating it is not the limiting factor at 1080p. Even at 1440p, the system achieves 169 FPS on Low and 137 FPS on Ultra.

Q: How does the RTX 5090 D's performance compare to its nearest rivals in benchmark scores?

A: The RTX 5090 D has an average benchmark score of 77712, sitting at the 92nd percentile. Its nearest rivals are the AMD Radeon RX 6650M XT (delta 1.1%), AMD Radeon RX 6850M XT (delta -1.6%), NVIDIA Tesla P100 PCIe 12 GB (delta -2.1%), and NVIDIA Tesla P100 PCIe 16 GB (delta -2.4%). All rivals are within 2.4% of the 5090 D's score.

Q: What is the best resolution to play Thief with this hardware combination?

A: At 1440p Medium, the system delivers 153 FPS average with a 130 FPS minimum, which is excellent for high-refresh monitors. At 4K Medium, it still manages 120 FPS average, making 4K viable. The choice depends on whether the user prefers higher frame rates or higher resolution.

Q: Does the Ultra preset provide a significant frame rate advantage over High?

A: No. At 1080p, Ultra (155 FPS) is only 2 FPS lower than High (157 FPS). At 1440p, Ultra (137 FPS) is 2 FPS lower than High (139 FPS). At 4K, Ultra (87 FPS) is 5 FPS lower than High (92 FPS). The differences are minimal, suggesting Ultra adds little over High in this game.

Q: How does the i5-12600KF's multi-threaded performance compare to its single-threaded performance?

A: The CPU's 3DMark max-thread score is 7952 versus a single-thread score of 1016, showing strong scaling. Cinebench R23 multi-core is 23391 versus 3302 single-core. PassMark multithread is 27575 versus 3925 single-thread. This indicates the processor scales well across its 16 threads.

Q: Is the 4K Medium experience smooth enough for gameplay?

A: Yes. At 4K Medium, the system produces 120 FPS average with a minimum of 102 FPS and maximum of 138 FPS. The minimum frame rate stays above 100 FPS, which is well within smooth gameplay territory for a stealth title.

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

The NVIDIA GeForce RTX 5090 D is built on the Blackwell 2.0 architecture with a GB202 chip fabricated on TSMC's 5 nm process. It packs 92,200 million transistors on a 750 mm² die, yielding a transistor density of 122.9M per mm². The GPU operates at a base clock of 2017 MHz with a boost clock of 2407 MHz, with memory clocked at 1750 MHz (28 Gbps effective). The memory subsystem is substantial: 32 GB of GDDR7 on a 512-bit bus, delivering 1.79 TB/s bandwidth. This memory configuration is more than sufficient for Thief, a 2014 title that predates the era of large texture packs and high-resolution assets.

The GPU's compute resources are equally massive: 21,760 shading units, 680 TMUs, 176 ROPs, 170 RT cores, and 680 tensor cores. Pixel rate is 423.6 GPixel/s, texture rate is 1,636.8 GTexel/s, and FP32 performance reaches 104.8 TFLOPS (with FP16 at 104.8 TFLOPS 1:1). The card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Its power requirements are substantial — 575 W TDP with a suggested 950 W PSU — and it uses a single 16-pin power connector.

In Thief, the GPU's role becomes evident in the resolution scaling data. At 1080p, the frame rates across all settings (155-192 FPS) are likely limited by the CPU's ability to feed the GPU. The GPU's massive compute capacity is underutilized at this resolution. At 1440p, the GPU begins to show its influence, with frame rates ranging from 137 FPS (Ultra) to 169 FPS (Low). At 4K, the GPU is clearly the dominant factor, with frame rates dropping to 87-142 FPS depending on settings. The gap between 1080p Ultra (155 FPS) and 4K Ultra (87 FPS) — a 44% reduction — directly reflects the GPU's rendering load at higher resolutions.

The 32 GB VRAM is far beyond what Thief requires, but it ensures no memory-related stutters or texture pop-in at any resolution. The card's benchmark scores reinforce its high-end positioning: 3DMark Steel Nomad DX12 score of 14326, Geekbench OpenCL of 310674, and Geekbench Vulkan of 376915. PassMark G3D score is 44065, with DirectX 11 and DirectX 12 scores of 371 and 219 respectively. The GPU's average benchmark score of 77712 places it at the 92nd percentile, with nearest rivals being AMD Radeon RX 6650M XT (delta 1.1%) and AMD Radeon RX 6850M XT (delta -1.6%).

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

1080p (1920x1080):

• Low: 192 FPS average. This is the highest frame rate recorded in the entire dataset, indicating the CPU is the primary limiter at this setting.
• Medium: 174 FPS average, with a minimum of 148 FPS and maximum of 200 FPS. The minimum-to-maximum spread of 52 FPS shows variability, but the floor remains well above 144 FPS.
• High: 157 FPS average. A 17 FPS drop from Medium, which is modest given the visual improvements typically associated with High settings.
• Ultra: 155 FPS average. Only 2 FPS below High, suggesting Ultra adds minimal rendering cost at 1080p.

1440p (2560x1440):

• Low: 169 FPS average. A 23 FPS drop from 1080p Low, showing the GPU beginning to take on more work.
• Medium: 153 FPS average, with a minimum of 130 FPS and maximum of 176 FPS. The 46 FPS spread is narrower than at 1080p, indicating more consistent frame pacing.
• High: 139 FPS average. A 14 FPS drop from Medium; still comfortably above 120 FPS for high-refresh gaming.
• Ultra: 137 FPS average. Just 2 FPS below High, mirroring the 1080p pattern where Ultra and High are nearly identical.

4K (3840x2160):

• Low: 142 FPS average. The GPU handles 4K Low with relative ease, maintaining a high frame rate.
• Medium: 120 FPS average, with a minimum of 102 FPS and maximum of 138 FPS. The 36 FPS spread suggests some scene complexity variation, but the minimum stays above 100 FPS.
• High: 92 FPS average. A significant 28 FPS drop from Medium, indicating the GPU is now heavily loaded.
• Ultra: 87 FPS average. Only 5 FPS below High, continuing the trend of diminishing returns between High and Ultra.

The overall combo ranking for this CPU-GPU pair in Thief is 139 out of 2851 combinations, placing it in the top 5% of tested configurations. The data is measured, not estimated, lending confidence to these figures.

The pattern across all resolutions is consistent: Low offers the highest frame rates, Medium provides the best balance, High and Ultra are nearly indistinguishable. At 4K, the GPU becomes the clear bottleneck, while at 1080p, the CPU's capabilities cap performance around the 155-192 FPS range. The RTX 5090 D's 32 GB VRAM and 1.79 TB/s bandwidth are never stressed by Thief's requirements, but the GPU's compute throughput determines the 4K ceiling.