Thief

Thief, a 2014 stealth title built on the Unreal Engine 3.5 foundation, presents a unique benchmarking scenario when paired with the Intel Core i5-9400 and NVIDIA GeForce RTX 3080. The measured frame rates across three resolutions and four quality presets reveal a system that is often constrained by the legacy game engine and the six-thread CPU, rather than the modern GPU's raw capabilities. The data indicates a performance profile that is heavily influenced by resolution scaling and the game's treatment of CPU-bound scenes, making this a valuable case study for how older titles interact with contemporary hardware.

Resolution Scaling

The transition from 1920x1080 to 3840x2160 reveals a predictable yet significant drop in frame rates, characteristic of a title that scales with pixel count. At the High preset, the average frame rate falls from 97 FPS at 1080p to 86 FPS at 1440p, a reduction of 11 FPS, and then further to 57 FPS at 4K, a substantial 29 FPS drop from the 1440p figure. This trajectory suggests that while the RTX 3080 has ample headroom at lower resolutions, the 4K workload begins to tax the GPU more heavily, though the absolute numbers remain playable.

The scaling pattern intensifies at the Ultra preset, where the average frame rate goes from 96 FPS at 1080p to 84 FPS at 1440p, and then plummets to 54 FPS at 4K. The 30 FPS difference between 1080p and 4K Ultra is the largest observed in the dataset, indicating that the highest quality settings combine with 4K resolution to create a scenario where the GPU's memory bandwidth and compute throughput are pushed to their limits. This is consistent with the RTX 3080's 10 GB GDDR6X memory and 760.3 GB/s bandwidth, which are substantial but still finite for a 2014 engine that may not be optimized for such high pixel densities.

Interestingly, the Low preset shows the smallest relative drop, with 119 FPS at 1080p, 105 FPS at 1440p, and 88 FPS at 4K. The 31 FPS difference between 1080p and 4K Low is similar in magnitude to the Ultra preset's drop, but the absolute frame rates are much higher, suggesting that the CPU is not the primary bottleneck at Low settings. Instead, the GPU's fill rate and pixel processing become the limiting factors as resolution increases, a logical conclusion given the RTX 3080's 164.2 GPixel/s pixel rate and 96 ROPs.

The data also shows that the gap between 1080p and 1440p is consistently smaller than the gap between 1440p and 4K across all presets. For instance, at Medium settings, the frame rate goes from 107 FPS at 1080p to 95 FPS at 1440p (a 12 FPS drop), but then falls to 75 FPS at 4K (a 20 FPS drop). This non-linear scaling is typical of a game where the rendering complexity increases disproportionately with pixel count, and it confirms that 4K is the most demanding scenario for this combination, with the RTX 3080 still managing to deliver a smooth experience above 50 FPS in all cases.

CPU Role

The Intel Core i5-9400 is a 6-core, 6-thread processor based on the Coffee Lake architecture, with a base clock of 2.90 GHz and a boost clock of 4.10 GHz. Its specifications, including a 9 MB shared L3 cache and support for DDR4 memory, position it as a solid mid-range CPU from its era, but its lack of hyper-threading is a notable limitation for modern titles and even for Thief, which was released well before this processor's 2018 debut.

In the measured results, the CPU's influence is most apparent at lower resolutions and higher settings, where the frame rate does not scale as expected with GPU capability. At 1080p Ultra, the average frame rate is 96 FPS, which is only 8 FPS lower than the 1080p Low result of 119 FPS. This relatively small difference suggests that the CPU is limiting the maximum achievable frame rate, as the GPU has enough power to render more frames but is held back by the processor's ability to feed it data. The i5-9400's Cinebench R23 multi-core score of 6629 and single-core score of 935 support this interpretation, as the single-thread performance is modest by modern standards.

The CPU's role becomes more nuanced when comparing resolutions. At 4K Ultra, the frame rate drops to 54 FPS, which is a 42 FPS reduction from the 1080p Ultra figure. This large drop indicates that the GPU is now the primary bottleneck, as the higher pixel count overwhelms the RTX 3080's capabilities. However, at 1080p Low, the CPU is clearly the limiting factor, as the 119 FPS result is likely near the ceiling for this processor in this game, given its 47th percentile ranking among all CPUs and its average benchmark score of 2254.

The data suggests that the i5-9400's 6 threads are sufficient for Thief's core logic, but the game's engine may struggle to utilize additional cores effectively. The processor's nearest rivals, such as the Intel Core i7-1068NG7 and AMD Ryzen 5 PRO 1500, have similar average scores (2259 and 2246, respectively), indicating that the i5-9400 is not exceptionally strong or weak for its class. Instead, its performance in Thief is a reflection of the game's age and its reliance on single-threaded performance, which is why the boost clock of 4.10 GHz is crucial for maintaining playable frame rates.

GPU Role

The NVIDIA GeForce RTX 3080 is a high-end graphics card based on the Ampere architecture, featuring 8704 shading units, 272 texture mapping units, and 96 ROPs. Its 10 GB of GDDR6X memory on a 320-bit bus provides a bandwidth of 760.3 GB/s, which is more than sufficient for a 2014 title like Thief. The GPU's performance is further bolstered by its boost clock of 1710 MHz and a pixel rate of 164.2 GPixel/s, making it a formidable piece of hardware for modern games, but its interaction with Thief reveals some interesting dynamics.

In the measured data, the RTX 3080's role becomes more prominent as resolution increases. At 4K Ultra, the average frame rate of 54 FPS is the lowest in the dataset, and this is where the GPU's compute resources are most heavily taxed. The 10 GB VRAM is likely not a limiting factor in this game, as Thief's textures and geometry are relatively modest by today's standards, but the sheer number of pixels at 4K pushes the GPU's fill rate and shading units to their limits. The result is a playable but not exceptionally smooth experience, with the frame rate dipping below 60 FPS.

The GPU's performance at 1440p is more balanced, with frame rates ranging from 84 FPS at Ultra to 105 FPS at Low. This suggests that the RTX 3080 has enough headroom at this resolution to handle Thief's demands without being overly constrained by the CPU. The 95 FPS average at Medium settings, with a minimum of 81 FPS and a maximum of 109 FPS, indicates a stable experience that is well-suited for a stealth game where consistent frame pacing is important for immersion.

The RTX 3080's benchmark scores provide context for its performance in Thief. Its PassMark G3D score of 25086 places it in the 68th percentile among all GPUs, which is respectable but not top-tier, and its nearest rivals include the NVIDIA P106-100 and AMD Radeon Pro Vega 16, both with similar average scores. This suggests that while the RTX 3080 is a powerful card, it is not the absolute fastest in every scenario, and its performance in Thief is likely limited by the game's engine rather than the GPU's raw specs.

How This Combo Ranks

The combination of the Intel Core i5-9400 and NVIDIA GeForce RTX 3080 achieves a rank of 2002 out of 3720 tested combos in Thief, placing it in the 53rd percentile of all systems. This ranking is surprisingly modest for a GPU of the RTX 3080's caliber, and it underscores the extent to which the older CPU and the game's engine limit overall performance. The data indicates that this combo is not in the top tier for Thief, and its rank is likely dragged down by the CPU's relatively low average benchmark score of 2254 and its 47th percentile ranking among all CPUs.

The combo's rank of 2002 suggests that there are many other combinations that perform better in this game, particularly those with newer, higher-thread-count CPUs. The i5-9400's 6 threads are a clear bottleneck for a game that may benefit from more cores, even though Thief was released in 2014. The GPU's 68th percentile ranking among all GPUs is higher than the combo's overall rank, indicating that the CPU is the weaker link in this pairing.

When compared to other combos in the database, this system's performance is solid but not exceptional. The measured frame rates at 1080p are generally above 90 FPS, which is smooth for most gamers, but the 4K results below 60 FPS at High and Ultra settings are not ideal for a card that is often associated with high-refresh-rate 4K gaming. The combo's rank of 2002 out of 3720 means that roughly 54% of tested systems perform better, which is a meaningful statistic for users considering this configuration for Thief.

The data also shows that the combo's performance is more consistent at lower resolutions, where the frame rate differences between presets are smaller. This suggests that the system is better suited for 1080p or 1440p gaming in Thief, where it can maintain high frame rates, rather than 4K, where the CPU and GPU are both stretched. The ranking reflects this reality, as the combo is not optimized for the most demanding settings.

FAQ

Q: What is the average frame rate at 1080p Ultra settings for this combo?

A: The average frame rate at 1920x1080 with Ultra settings is 96 FPS, with a minimum of 91 FPS and a maximum of 124 FPS observed at Medium settings, though Ultra-specific min/max values are not provided.

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

A: The Intel Core i5-9400 has an average benchmark score of 2254, which is 0.2% lower than the Intel Core i7-1068NG7 (2259) and 0.4% higher than the AMD Ryzen 5 PRO 1500 (2246), indicating a close grouping among these processors.

Q: Is the RTX 3080's 10 GB VRAM sufficient for Thief at 4K?

A: Yes, the 10 GB GDDR6X memory is ample for Thief, as the game's textures and geometry are not demanding enough to exceed this capacity, even at 3840x2160 with Ultra settings.

Q: What is the combo's overall rank in Thief?

A: The combo ranks 2002 out of 3720 tested combinations, placing it in the lower half of the database, which suggests that the CPU is a limiting factor for this game.

Q: Does the frame rate drop significantly between 1440p and 4K?

A: Yes, at High settings, the average frame rate drops from 86 FPS at 2560x1440 to 57 FPS at 3840x2160, a 29 FPS reduction, indicating that 4K is substantially more demanding.

Q: What is the minimum frame rate recorded at 1080p Medium settings?

A: At 1920x1080 with Medium settings, the minimum frame rate is 91 FPS, with an average of 107 FPS and a maximum of 124 FPS.

Settings Recommendations

Based on the measured frame rates, the optimal experience for this combo in Thief is achieved at 2560x1440 with High settings, where the average frame rate is 86 FPS. This resolution strikes a balance between visual fidelity and performance, as it is more detailed than 1080p but still maintains a frame rate well above 60 FPS. The High preset at 1440p offers a 2 FPS improvement over the Ultra preset (84 FPS), making it the better choice for users who prioritize smoothness over marginal graphical enhancements.

For users with 1080p displays, the Ultra preset at 96 FPS is recommended, as it provides the highest visual quality without sacrificing playability. The frame rate remains above 90 FPS, which is excellent for a stealth game where quick reactions may be required. The Low preset at 119 FPS is unnecessary unless the user is targeting a very high refresh rate display, as the visual downgrade is not worth the 23 FPS gain over Ultra.

At 4K, the Medium preset is the best option, offering an average frame rate of 75 FPS with a minimum of 63 FPS. This is the only 4K preset that consistently stays above 60 FPS, and it provides a decent balance between quality and performance. The High preset at 57 FPS and Ultra at 54 FPS are playable but may exhibit occasional stutters, making them less ideal for a game that rewards smooth, stealthy movement. The Low preset at 88 FPS is an option for competitive play, but the visual quality is significantly reduced.

Measured FPS Breakdown

At 1920x1080, the average frame rates are 119 FPS at Low, 107 FPS at Medium, 97 FPS at High, and 96 FPS at Ultra. The Medium preset has a recorded minimum of 91 FPS and a maximum of 124 FPS, while the other presets do not have min/max data. The difference between Low and Ultra is 23 FPS, indicating that the CPU is a factor at this resolution, as the GPU has enough headroom to render more frames.

At 2560x1440, the average frame rates are 105 FPS at Low, 95 FPS at Medium, 86 FPS at High, and 84 FPS at Ultra. The Medium preset shows a minimum of 81 FPS and a maximum of 109 FPS. The drop from Low to Ultra is 21 FPS, which is slightly smaller than at 1080p, suggesting that the GPU is beginning to play a larger role in limiting performance.

At 3840x2160, the average frame rates are 88 FPS at Low, 75 FPS at Medium, 57 FPS at High, and 54 FPS at Ultra. The Medium preset has a minimum of 63 FPS and a maximum of 86 FPS. The difference between Low and Ultra is 34 FPS, which is the largest across all resolutions, confirming that the GPU is the dominant bottleneck at 4K. The data shows a clear trend: as resolution increases, the frame rate decreases proportionally, but the rate of decline accelerates at 4K, reflecting the RTX 3080's finite pixel throughput.