Thief

The Intel Core i5-12400F is a 6-core, 12-thread processor based on the Alder Lake architecture, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. For a 2014 stealth title like Thief, this CPU provides ample computational headroom. Its 18 MB of shared L3 cache and 1.25 MB per-core L2 cache help maintain consistent frame pacing, though the game’s age means it rarely stresses more than a few threads. The CPU’s benchmark data shows a single-thread score of 909 in 3DMark and a multi-thread score of 5,895 in the 16-thread test, indicating strong per-core performance that matters more for older game engines than raw core counts.

The AMD Radeon RX 7900 XTX, built on the RDNA 3.0 architecture with 6,144 shading units and a boost clock of 2,498 MHz, is the dominant component in this pairing. With 24 GB of GDDR6 memory on a 384-bit bus delivering 960.0 GB/s of bandwidth, the GPU is far more powerful than what Thief requires. At 1080p, the measured data shows the CPU is the limiting factor: the average FPS across settings ranges from 138.5 at Ultra to 170.5 at Low, a narrow spread that suggests the GPU is waiting on the processor to feed it frames. The i5-12400F’s 77th percentile ranking among all CPUs, compared to the RX 7900 XTX’s 85th percentile among GPUs, reinforces this imbalance. The combo ranks 283rd out of 1,642 tested configurations, placing it in the top 17% of all combinations, which is strong but not elite due to the CPU bottleneck at lower resolutions.

FAQ

Q: How does the i5-12400F compare to its closest rival, the Intel Core i7-8700K?

A: The i5-12400F’s average benchmark score is 19,221, which is 0.1% higher than the i7-8700K’s 19,210. This effectively places the two processors at parity, meaning the newer i5 offers no measurable advantage over the older i7 in synthetic tests.

Q: What is the performance gap between the RX 7900 XTX and the NVIDIA GeForce RTX 4070 Ti?

A: The RX 7900 XTX has an average benchmark score of 44,019, which is 2% lower than the RTX 4070 Ti’s score of 44,900. This indicates the NVIDIA card holds a slight edge in overall GPU compute performance, despite the RX 7900 XTX having a higher percentile ranking (85th vs. the RTX 4070 Ti’s position among rivals).

Q: Why does the FPS difference between Low and Ultra settings shrink as resolution increases?

A: At 1080p, the spread between Low (170.5 FPS) and Ultra (138.5 FPS) is 32 FPS, but at 4K, the spread narrows to 52.9 FPS (117.8 Low vs. 64.9 Ultra). The data shows that at higher resolutions, the GPU becomes the primary bottleneck, so the CPU’s performance ceiling matters less, and the settings’ impact on GPU load dominates the frame rate.

Q: Is this CPU-GPU combo better suited for 1440p or 1080p gaming in Thief?

A: The measured data suggests 1440p is the sweet spot. At 1440p High, the combo achieves 117.3 FPS, which is 82% of the 1080p High score of 139.5 FPS, while at 4K High, it drops to 68.9 FPS (49% of the 1080p score). This indicates the CPU can still feed the GPU adequately at 1440p, but the GPU’s raw power is better utilized than at 1080p.

Q: How does the i5-12400F’s multi-threaded performance compare to its single-threaded performance?

A: The CPU scores 16,518 in Cinebench R23 multi-core and 2,332 in single-core. This represents a 7.1x scaling factor from single to multi-threaded workloads, which is reasonable for a 6-core, 12-thread part but shows diminishing returns beyond 8 threads, as the 3DMark 8-thread score (4,779) is only 81% of the 16-thread score (5,895).

Q: What does the combo’s rank of 283 out of 1,642 configurations indicate?

A: This rank places the pairing in the top 17.2% of all tested combos. Given that the GPU is an end-of-life flagship and the CPU is a mid-range part, this position reflects a strong but not top-tier configuration, likely held back by the CPU’s 77th percentile standing relative to other processors.

Resolution Scaling

The measured FPS data reveals a clear pattern of diminishing returns as resolution increases, with the CPU and GPU roles shifting across the spectrum. At 1080p, the combo is CPU-limited: the average FPS at High settings is 139.5, and raising resolution to 1440p only drops this to 117.3 FPS, a 16% reduction. However, moving to 4K High yields 68.9 FPS, a 41% drop from 1440p and a 51% drop from 1080p. This steep decline at 4K indicates the GPU is now the limiting component, as the RX 7900 XTX’s pixel throughput (479.6 GPixel/s) cannot keep pace with the CPU’s ability to generate draw calls at this resolution.

The Low settings data further illustrates this shift. At 1080p Low, the combo hits 170.5 FPS, but at 1440p Low, it falls to 152.6 FPS (a 10.5% drop), and at 4K Low, it drops to 117.8 FPS (a 22.8% drop from 1440p). Interestingly, the gap between Low and Ultra settings widens with resolution: at 1080p, the difference is 32 FPS (170.5 vs. 138.5), but at 4K, the difference grows to 52.9 FPS (117.8 vs. 64.9). This suggests that at 1080p, the CPU caps performance regardless of settings, while at 4K, the GPU’s workload becomes the dominant factor, making the settings slider more impactful.

The Medium settings data shows the most balanced behavior. At 1080p Medium, the combo produces 157.1 FPS; at 1440p Medium, 137.1 FPS (a 12.7% drop); and at 4K Medium, 87.7 FPS (a 36% drop from 1440p). This indicates that Medium settings provide a more linear scaling curve, suggesting that the CPU and GPU are better balanced at this preset. The Ultra settings show the steepest 4K drop (64.9 FPS, a 42.7% reduction from 1440p’s 113.3 FPS), confirming that the GPU’s 24 GB memory buffer is not the issue; rather, the shader and texture load at Ultra overwhelms the GPU at 4K.

Settings Recommendations

For the best experience per the measured rows, the Medium preset at 1440p offers the optimal balance between visual fidelity and frame rate. The data shows 137.1 FPS at 1440p Medium, which is 87% of the 1080p Medium score (157.1 FPS) but only 12.7% lower than 1080p Medium. This represents a minimal visual quality trade-off for a substantial resolution upgrade. At 4K, the Medium preset yields 87.7 FPS, which is playable but below the 90+ FPS threshold that many users prefer for a stealth title requiring precise timing.

If the user prioritizes frame rate over resolution, the High preset at 1080p delivers 139.5 FPS, which is only 2% lower than the Ultra preset at 1440p (113.3 FPS) but at a much lower resolution. However, the data suggests that the Ultra preset at 1440p (113.3 FPS) is a better choice than 4K High (68.9 FPS), as the former maintains a smooth experience while the latter dips below 70 FPS. The Low preset is not recommended, as even at 4K it only achieves 117.8 FPS, which is no better than the 1440p High score, indicating that the GPU is not the bottleneck at Low settings.

The key insight from the data is that the Ultra preset at 4K (64.9 FPS) is the only configuration that falls below 60 FPS, making it unsuitable for responsive gameplay. The sweet spot for a high-refresh-rate monitor is 1440p Medium or High, both of which exceed 115 FPS. For a 4K display, the Medium preset (87.7 FPS) is the highest playable option, as the High and Ultra presets drop to 68.9 and 64.9 FPS, respectively. The measured data shows no min or max FPS values, so the analysis relies solely on average FPS, which indicates that the Medium preset at 4K is the most stable choice for maintaining a consistent experience.

How This Combo Ranks

The combination of the Intel Core i5-12400F and AMD Radeon RX 7900 XTX holds a combo rank of 283 out of 1,642 tested configurations in Thief, placing it in the top 17.2% of all combos. This rank is notably strong given that the GPU is an end-of-life product with a successor (Navi IV) already in production, while the CPU remains an active product. The GPU’s 85th percentile ranking among all GPUs is the primary driver of this position, but the CPU’s 77th percentile standing tempers the overall result.

The CPU’s nearest rivals provide context for its contribution to this rank. The i5-12400F’s average score of 19,221 is 0.1% above the i7-8700K and 0.3% above the i5-1335U, but 0.7% below the AMD Ryzen 5 7533HS and 1.3% above the AMD EPYC 7773X. This clustering indicates that the CPU is competitively positioned within a narrow performance band, meaning its impact on the combo rank is consistent with other mid-range processors. The GPU’s nearest rivals show a wider spread: the RX 7900 XTX is 0.4% below the Radeon Pro 580, 0.8% above the RTX 4090 Mobile, 1.6% above the Quadro M6000, and 2% below the RTX 4070 Ti. This places the GPU at the lower end of its peer group, which explains why the combo rank is not higher.

The data suggests that the combo rank is limited by the CPU’s inability to fully unlock the GPU’s potential at lower resolutions. At 1080p, the FPS differences between settings are relatively small (138.5 to 170.5 FPS), indicating a CPU bottleneck. At 4K, the FPS spread widens (64.9 to 117.8 FPS), showing the GPU is now the limiting factor. This implies that if the combo were paired with a higher-tier CPU, the 1080p scores would likely improve, potentially raising the rank. However, given the measured data, the 283rd position out of 1,642 is a respectable result, placing this configuration ahead of 82.8% of all tested combos while falling short of elite status due to the mid-range CPU.