Thief

How This Combo Ranks

The Intel Core i5-12400 paired with the NVIDIA GeForce RTX 3080 lands at rank 459 out of 1642 tested combos in Thief, placing it comfortably within the top 28% of all configurations. This is a strong result for a 2014 stealth title, indicating that this pairing has ample headroom for the game's engine. The combo's position suggests that while it is not at the absolute apex of performance—where exotic multi-GPU or latest-generation flagship setups reside—it sits well above the median experience, offering a high-refresh-rate capable foundation.

Looking at the individual components, the GPU's average benchmark score of 35787 places it in the 80th percentile among all GPUs. Its nearest rival, the AMD Radeon Pro Duo, scores 35860, a negligible 0.2% difference, while the AMD Radeon RX 7900 GRE is just 0.9% ahead. This indicates the RTX 3080 is holding its own against newer silicon, at least in synthetic tests. The CPU, with an average benchmark score of 19850, sits in the 77th percentile. Its nearest rival, the Intel Core i7-9700, scores 19831, a 0.1% difference—essentially a statistical tie. This suggests the i5-12400 provides a balanced platform that does not bottleneck the GPU in most scenarios.

The rank in-game, however, is more telling than the sum of its parts. A rank of 459 implies that many combinations outperform this duo, likely due to the age of Thief and its CPU-bound nature at lower resolutions. The data shows that this combo is not struggling, but it is also not maximizing the GPU's potential at 1080p, where the CPU's single-thread performance becomes a more significant factor. The 3DMark single-thread score of 910 and Cinebench R23 single-core score of 2249 are respectable, but Thief's engine may not fully utilize all 12 threads of the i5-12400, leaving performance on the table.

GPU Role

The NVIDIA GeForce RTX 3080 is the dominant force in this pairing, built on the Ampere architecture with a GA102 chip. Its memory configuration is a key asset: 10 GB of GDDR6X on a 320-bit bus provides 760.3 GB/s of bandwidth. This is crucial for Thief at higher resolutions, where texture streaming and memory bandwidth directly impact frame pacing. The 68 RT cores and 272 Tensor cores are present, though Thief predates widespread ray tracing, so their role is likely minimal in this specific title.

The GPU's clock behavior shows a base of 1440 MHz and a boost of 1710 MHz. The boost clock is what the card sustains under load, and benchmark results indicate it maintains solid performance across all settings. The measured FPS data illustrates the GPU's scaling: at 4K Ultra, it drops to 52.3 FPS, while at 1080p Low, it reaches 168.7 FPS. This wide range suggests the card is capable of delivering playable framerates even at the highest preset, but it also reveals the GPU's limits when pushed with maximum settings at 4K.

The GPU's compute capabilities, with 8704 shading units and 29.77 TFLOPS of FP32 performance, are more than sufficient for Thief's DirectX 11-era rendering. The pixel rate of 164.2 GPixel/s and texture rate of 465.1 GTexel/s ensure that even at 4K, the card can fill the screen with detailed geometry without becoming the bottleneck. The data shows that at 4K High, the combo achieves 59.3 FPS, which is just shy of a locked 60, implying that a slight settings tweak could yield a perfectly smooth experience.

Settings Recommendations

The measured FPS data provides clear guidance for optimal settings. At 4K, the Ultra preset yields 52.3 FPS, which is borderline for smooth gameplay. Dropping to High improves this to 59.3 FPS, a 13% increase, and Medium jumps to 76.6 FPS. For a 60 Hz display at 4K, the Medium preset is the safest choice, offering 76.6 FPS with headroom for dips, while High is acceptable if the user tolerates occasional drops below 60.

At 1440p, the story changes. The High preset delivers 96.8 FPS, which is excellent for high-refresh-rate monitors. The Ultra preset still manages 90.8 FPS, making it viable for 144 Hz displays, though the 6 FPS difference between High and Ultra is minimal. The Medium preset hits 127.9 FPS, and Low reaches 150.3 FPS, but these lower settings sacrifice visual fidelity for marginal gains. The data suggests that High at 1440p is the sweet spot, balancing visual quality with performance.

At 1080p, all presets are playable. The Ultra preset achieves 134.8 FPS, and High is nearly identical at 137.9 FPS. The Medium preset reaches 156.4 FPS, and Low tops out at 168.7 FPS. Given the small difference between High and Ultra, the Ultra preset is recommended for 1080p, as it provides the best visual experience without a meaningful performance penalty. The data indicates this combo is CPU-limited at 1080p, as the framerate does not scale linearly with GPU load.

Measured FPS Breakdown

The measured FPS data reveals a consistent pattern across resolutions. At 1920x1080, the combo delivers 168.7 FPS on Low, 156.4 FPS on Medium, 137.9 FPS on High, and 134.8 FPS on Ultra. The spread from Low to Ultra is 33.9 FPS, showing that the GPU has enough headroom to handle even the heaviest settings at this resolution.

Moving to 2560x1440, the framerates drop but remain high. Low yields 150.3 FPS, Medium drops to 127.9 FPS, High settles at 96.8 FPS, and Ultra reaches 90.8 FPS. The difference between High and Ultra is only 6 FPS, suggesting that the Ultra preset does not add a significant load over High, making it a viable option for users with 144 Hz monitors.

At 3840x2160, the GPU begins to show its limits. Low achieves 100.4 FPS, Medium drops to 76.6 FPS, High hits 59.3 FPS, and Ultra falls to 52.3 FPS. The gap between High and Ultra is 7 FPS, but the more significant drop is from Medium to High, a 17.3 FPS reduction. This indicates that the High preset introduces effects that are disproportionately expensive at 4K. The data shows that this combo is GPU-bound at 4K, as the CPU's influence diminishes at higher resolutions.

Resolution Scaling

The scaling from 1080p to 4K is instructive. At Ultra settings, the framerate drops from 134.8 FPS at 1080p to 90.8 FPS at 1440p, a 32.6% reduction, and then to 52.3 FPS at 4K, a further 42.4% reduction from 1440p. This steep decline indicates that the GPU is the primary limiting factor at higher resolutions, as the pixel count quadruples from 1080p to 4K.

At Low settings, the scaling is less severe. The framerate drops from 168.7 FPS at 1080p to 150.3 FPS at 1440p (a 10.9% reduction) and then to 100.4 FPS at 4K (a 33.2% reduction from 1440p). This suggests that at Low settings, the CPU becomes a more significant bottleneck at 1080p, limiting the framerate to 168.7 FPS even though the GPU could likely push higher.

The data implies a dual-bottleneck scenario. At 1080p, the i5-12400's single-thread performance, as indicated by its 3DMark single-thread score of 910, may cap the framerate. At 4K, the RTX 3080's compute and memory bandwidth are the limiting factors. This is a classic balance for a mid-range CPU paired with a high-end GPU, where the optimal resolution is 1440p, offering a compromise between the two bottlenecks.

FAQ

Q: Is this combo capable of 4K gaming in Thief?

A: Yes, but with caveats. At 4K High, the combo achieves 59.3 FPS, and at Medium, it reaches 76.6 FPS. For a 60 Hz display, the Medium preset is the safest recommendation.

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

A: The Intel Core i5-12400 has an average benchmark score of 19850, which is 0.1% higher than the Intel Core i7-9700 (19831) and 0.4% higher than the Intel Core i5-11600K (19771). It is essentially tied with these processors.

Q: What is the best resolution for this combo?

A: The data shows 2560x1440 as the sweet spot. At High settings, it delivers 96.8 FPS, which is ideal for high-refresh-rate monitors, while still offering a significant visual improvement over 1080p.

Q: Does the GPU bottleneck the CPU or vice versa?

A: At 1080p, the CPU is likely the limiting factor, as the framerate does not scale with GPU load. At 4K, the GPU becomes the bottleneck, as evidenced by the steep framerate drops at higher settings.

Q: How does the GPU rank among all GPUs?

A: The RTX 3080 is in the 80th percentile, with a Passmark G3D score of 25086. Its nearest rival, the AMD Radeon Pro Duo, is 0.2% ahead, and the AMD Radeon 880M is 0.4% behind.

Q: What is the framerate difference between High and Ultra at 1440p?

A: The difference is 6 FPS (96.8 FPS for High vs. 90.8 FPS for Ultra), indicating that the Ultra preset does not significantly tax the GPU compared to High.

CPU Role

The Intel Core i5-12400 is a 6-core, 12-thread processor with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. Its architecture, Alder Lake, is built on a 10 nm process with an 18 MB shared L3 cache. The CPU's performance in synthetic benchmarks is solid, with a Cinebench R23 multi-core score of 15935 and a single-core score of 2249. These numbers suggest that the i5-12400 can handle modern game engines, but Thief's 2014 release date means it may not leverage all 12 threads effectively.

The CPU's role in this combo is more pronounced at lower resolutions. At 1080p, the framerate caps at 168.7 FPS on Low settings, which is likely a CPU limit given the GPU's headroom. The Passmark single-thread score of 3456 and 3DMark single-thread score of 910 indicate that the CPU's single-core performance is adequate, but not exceptional, for a game that may rely on one or two primary threads.

The data shows that the CPU's 12 threads are underutilized in Thief. The 3DMark multi-thread score of 5890 is strong, but the game's engine may not scale beyond 4-6 threads. This is supported by the 3DMark 4-thread score of 3012, which is significantly lower than the max-thread score, suggesting that the game's workload is not heavily threaded. The i5-12400's 6 cores are likely sufficient, but the boost clock of 4.40 GHz is more critical for this title than the core count.

The CPU's percentile ranking of 77% places it above the average, and its nearest rival, the Intel Core i7-9700, is only 0.1% apart. This indicates that the i5-12400 provides a balanced platform that does not bottleneck the RTX 3080 in most scenarios. However, in a game like Thief, where CPU single-thread performance is paramount, the i5-12400's 4.40 GHz boost clock is the key differentiator, ensuring that the GPU is fed with enough data to maintain high framerates. The data suggests that upgrading the CPU would yield diminishing returns, as the GPU becomes the limiting factor at higher resolutions.