Thief

The Intel Core i5-12400 and AMD Radeon RX 6600 XT combination delivers a solidly playable experience in Thief, but the data reveals a clear performance ceiling. The pairing ranks 1117th out of 1642 tested combos, placing it in the lower-middle tier of the database, yet it still manages to produce high refresh-rate results at 1080p and smooth 60+ FPS at 1440p on lower presets. The bottleneck shifts decisively toward the GPU as resolution increases, while the CPU provides a stable foundation that never appears to hold the system back in this 2014 stealth title.

CPU Role

The Intel Core i5-12400 brings six cores and twelve threads to the table, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. This Alder Lake-S architecture chip, built on Intel's 10 nm process, carries 18 MB of shared L3 cache and supports DDR4 and DDR5 memory. In Thief, a game from 2014 predating this CPU by eight years, the processor's single-threaded strength is the key asset. The 3DMark single-thread score of 910 and Cinebench R23 single-core result of 2249 points indicate strong per-core performance that easily handles the game's AI, physics, and scripting logic.

The CPU's broader benchmark profile shows it sits at the 77th percentile among all tested processors, with an average benchmark score of 19850. Its nearest rivals in the database are the Intel Core i7-9700 (0.1% ahead), the Intel Core i7-8700 (0.2% behind), and the AMD Ryzen Threadripper PRO 5995WX (0.4% behind), which contextualizes the i5-12400 as a mid-range performer that trades blows with older high-end chips. In Thief, the CPU's 12 threads provide ample headroom; the game's engine was designed for quad-core systems, so the i5-12400's resources are never fully taxed. The measured FPS data confirms this: at 1080p Low, the system reaches 155.1 FPS, which is a strong indicator that the CPU is not the limiting factor even at lower settings where GPU load is reduced.

The 3DMark 16-thread score of 5873 and max-thread score of 5890 are nearly identical, showing that the CPU's performance scales efficiently up to its full thread count. This consistency matters in Thief, where background tasks and game logic can create irregular load spikes. The CPU's Passmark multithread score of 18747 and physics score of 1105 further reinforce that it has more than enough computational power for this title's requirements. The data suggests that the i5-12400 is effectively overkill for Thief, leaving the GPU as the primary determinant of frame rates across all settings and resolutions.

GPU Role

The AMD Radeon RX 6600 XT, built on the RDNA 2.0 architecture with the Navi 23 chip, carries 8 GB of GDDR6 memory on a 128-bit bus with 256.0 GB/s of bandwidth. Its boost clock reaches 2589 MHz, with a game clock of 2359 MHz and base clock of 1968 MHz. The GPU's 2048 shading units, 128 texture mapping units, and 64 render output units deliver a theoretical FP32 performance of 10.60 TFLOPS. These specifications position the RX 6600 XT as a capable 1080p and entry-level 1440p card, which aligns perfectly with the measured results in Thief.

The GPU sits at the 71st percentile among all tested graphics cards, with an average benchmark score of 27985. Its nearest rivals include the NVIDIA GeForce GTX 980 Ti (0.1% ahead), the AMD Radeon R9 M395X (0.4% ahead), and the NVIDIA GeForce RTX 3070 (0.9% behind). This proximity to the RTX 3070, a much more expensive card, highlights the RX 6600 XT's efficiency in raw compute terms. However, in Thief, the GPU's performance is heavily influenced by the game's rendering demands, particularly at higher resolutions and settings.

The 8 GB VRAM capacity is adequate for Thief's 2014-era textures and geometry, even at 4K Ultra where the system averages 37.9 FPS. The GPU's memory bandwidth of 256.0 GB/s proves sufficient, as the frame rate drops are consistent with compute-bound rather than memory-bound behavior. The Passmark G3D score of 16461 and DirectX 11 score of 163 indicate solid API-level performance, which matters because Thief primarily uses DirectX 11 rendering paths. The GPU's DirectX 12 score of 61 is notably lower, but this is irrelevant for a title that predates DX12's adoption. The RX 6600 XT's 32 ray accelerators are unused in this game, as Thief has no ray tracing support, meaning the card's full rasterization potential is what drives these results.

Resolution Scaling

The FPS data reveals a classic GPU-limited scaling pattern as resolution increases from 1080p to 4K. At 1080p High, the system averages 90.3 FPS; at 1440p High, it drops to 64.9 FPS (a 28.1% reduction); and at 4K High, it falls to 36.7 FPS (a 59.4% reduction from 1080p). This steep decline indicates that the RX 6600 XT's pixel throughput is the binding constraint, not the CPU. The pixel rate of 165.7 GPixel/s and texture rate of 331.4 GTexel/s are simply insufficient to maintain high frame rates at 4K with demanding settings.

The Low preset shows the same pattern but with higher absolute numbers: 155.1 FPS at 1080p, 108.8 FPS at 1440p, and 65.8 FPS at 4K. The 4K Low result staying above 60 FPS suggests that when the GPU's workload is reduced, the system can still deliver playable frame rates at the highest resolution. The gap between Low and Ultra settings widens with resolution: at 1080p, the difference between Low (155.1 FPS) and Ultra (88.8 FPS) is 66.3 FPS; at 4K, the difference shrinks to 27.9 FPS (65.8 vs 37.9). This compression of the settings gap at higher resolutions is a textbook sign of GPU saturation — the card is already near its maximum output, so reducing settings yields diminishing returns.

The Medium preset offers a middle ground, with 115.9 FPS at 1080p, 79.1 FPS at 1440p, and 48.9 FPS at 4K. These numbers indicate that at 1440p Medium, the system achieves a smooth 60+ FPS experience, while 4K Medium falls just below the 50 FPS threshold. The data clearly shows that for 4K gaming, only the Low preset provides consistently playable results, and even then, the 65.8 FPS average leaves little headroom for demanding scenes. At 1080p and 1440p, the system is comfortably within playable ranges across all settings, making the resolution scaling analysis a straightforward story of GPU-bound performance.

FAQ

*Q: What is the best resolution for this CPU-GPU combo in Thief?*

A: The data shows 1440p as the sweet spot. At Medium settings, the system averages 79.1 FPS, and even at High it maintains 64.9 FPS. While 1080p delivers higher frame rates (up to 155.1 FPS at Low), 1440p provides a better balance of visual fidelity and smoothness.

*Q: Can this system handle 4K gaming in Thief?*

A: Only at Low settings, which averages 65.8 FPS. Medium drops to 48.9 FPS, High to 36.7 FPS, and Ultra to 37.9 FPS. The 4K Low result is playable, but any higher preset will result in sub-50 FPS averages that may feel choppy.

Q: How does the CPU compare to its nearest rivals in benchmark scores?

A: The Intel Core i5-12400 has an average benchmark score of 19850, which is 0.1% behind the Intel Core i7-9700 (19831) and 0.2% ahead of the Intel Core i7-8700 (19894). This places it in the same performance tier as these older high-end processors.

Q: Is the GPU more powerful than its benchmark rivals suggest?

A: The RX 6600 XT's average benchmark score of 27985 is 0.1% ahead of the GTX 980 Ti (27956) and only 0.9% behind the RTX 3070 (28238). This indicates the card punches above its weight class in raw compute, though real-world gaming performance varies by title.

Q: What settings preset gives the highest frame rate at 1080p?

A: The Low preset yields the highest average at 155.1 FPS, followed by Medium at 115.9 FPS, High at 90.3 FPS, and Ultra at 88.8 FPS. The jump from Low to Medium is a 39.2 FPS drop, while High to Ultra is only a 1.5 FPS difference.

*Q: Does the system show any signs of CPU bottlenecking in Thief?*

A: No. The CPU's strong single-thread performance (3DMark single-thread score of 910) and the fact that frame rates scale predictably with GPU load across resolutions indicates the GPU is the limiting component. At 1080p Low, the 155.1 FPS result would require a weak CPU to bottleneck, and the i5-12400 clearly does not.

How This Combo Ranks

The combination of the Intel Core i5-12400 and AMD Radeon RX 6600 XT ranks 1117th out of 1642 tested combos in Thief, placing it in the 68th percentile of all combinations. This ranking reflects the system's mid-tier status: it outperforms roughly two-thirds of tested setups but falls well short of high-end configurations. The rank is consistent with the individual component percentiles — the CPU at 77th percentile and GPU at 71st percentile — suggesting a balanced pairing where neither component drastically outperforms or underperforms the other.

In practical terms, this ranking means the combo is positioned above entry-level systems but below enthusiast builds. The measured FPS data supports this: 1080p Ultra at 88.8 FPS is a strong result, but 4K Ultra at 37.9 FPS lags behind what top-tier GPUs achieve. The rank of 1117 also indicates that while this system handles Thief competently, there are 525 other combinations that deliver higher frame rates, likely featuring more powerful GPUs or newer CPU generations. The combo's performance is fundamentally capped by the GPU's 8 GB VRAM and 128-bit memory bus, which limit its ability to maintain high frame rates at 4K with demanding presets.

Measured FPS Breakdown

The measured FPS data provides a complete picture of the system's performance across three resolutions and four settings presets. At 1080p, the system delivers 155.1 FPS at Low, 115.9 FPS at Medium, 90.3 FPS at High, and 88.8 FPS at Ultra. These numbers indicate that 1080p is well within the system's comfort zone, with even the most demanding Ultra preset producing near-90 FPS averages. The 1.5 FPS difference between High and Ultra at 1080p is negligible, suggesting that the Ultra preset's additional visual effects have minimal performance cost at this resolution.

At 1440p, the system produces 108.8 FPS at Low, 79.1 FPS at Medium, 64.9 FPS at High, and 57.1 FPS at Ultra. The drop from 1080p to 1440p is consistent across presets, averaging about 30-35% fewer frames. The Ultra preset at 1440p falls below 60 FPS, which may be noticeable on high-refresh-rate monitors, but the High preset at 64.9 FPS remains playable. The Medium preset at 79.1 FPS offers the best balance of smoothness and visual quality at this resolution.

At 4K, the system achieves 65.8 FPS at Low, 48.9 FPS at Medium, 36.7 FPS at High, and 37.9 FPS at Ultra. The 4K results show a significant performance cliff: Low is the only preset that maintains 60 FPS, and all other presets fall below 50 FPS. Interestingly, Ultra (37.9 FPS) slightly outperforms High (36.7 FPS) at 4K, which is likely due to measurement variance or specific scene differences, but the difference is within noise. The 4K data clearly indicates that this system is not designed for 4K gaming in Thief beyond the lowest settings.

Settings Recommendations

For the best experience with this combo, the data points clearly to 1440p Medium as the optimal configuration. The 79.1 FPS average at this setting provides smooth gameplay that exceeds the 60 FPS threshold, while the Medium preset retains enough visual fidelity to appreciate Thief's atmospheric environments. At 1080p, Medium (115.9 FPS) or High (90.3 FPS) are both excellent choices, with High offering superior visuals at a still-impressive frame rate. The Ultra preset at 1080p (88.8 FPS) is only marginally slower than High and is worth enabling if visual quality is the priority.

For users with 4K displays, the Low preset (65.8 FPS) is the only viable option for smooth gameplay. The Medium preset at 48.9 FPS is borderline, and users sensitive to frame drops should avoid it. The High and Ultra presets at 4K, averaging 36.7 and 37.9 FPS respectively, are not recommended for a game that requires precise timing and stealth mechanics. The data suggests that the system's best use case is 1080p or 1440p gaming, where it can deliver high frame rates without compromising visual quality.

The settings ladder shows diminishing returns at the top end: at 1080p, the jump from High (90.3 FPS) to Ultra (88.8 FPS) costs only 1.5 FPS, making Ultra a free upgrade in performance terms. At 1440p, the same jump costs 7.8 FPS (64.9 to 57.1), which may be too much for some users. The recommendation is to prioritize a stable 60 FPS baseline: 1440p Medium and 1080p High both achieve this with room to spare, while 4K Low just barely reaches it. For the best overall experience, 1440p Medium offers the ideal compromise between resolution, visual detail, and frame rate.