Thief

The AMD Ryzen 9 9900X and Intel Arc B580 combination ranks 2,779 out of 3,720 tested combos for Thief, placing it in the 25th percentile of all tested systems. This is a below-average standing, but the ranking is heavily influenced by the GPU’s modest performance class relative to the CPU’s high-end standing. The Ryzen 9 9900X sits in the 92nd percentile among all CPUs, while the Arc B580 sits in the 68th percentile among all GPUs, creating a system where the graphics card is the limiting factor for this game. The combo’s rank suggests that while the CPU is overqualified for the workload, the GPU holds the system back from higher overall placement.

How This Combo Ranks

The combo’s rank of 2,779 out of 3,720 places it in the lower half of all tested combinations for Thief. This is a surprisingly low position given the hardware involved, but it reflects the game’s age and its relatively light CPU demands. Thief launched in 2014, and its engine does not scale well with the 12-core, 24-thread Ryzen 9 9900X, which is far more capable than the game requires. The benchmark data shows the CPU’s multi-threaded strength is largely irrelevant here, as the game’s performance is dictated by the GPU at most settings.

The Arc B580’s average benchmark score of 23,021 places it near several older and newer cards, with its closest rival being the AMD Radeon RX 580 2048SP at 23,061 (0.2% faster), followed by the NVIDIA GeForce RTX 2080 at 22,895 (0.6% slower), and the RTX 3080 at 23,172 (0.7% slower). This grouping indicates the B580 delivers performance in a narrow band, and the combo’s low rank stems from this GPU tier rather than any CPU bottleneck. The CPU’s nearest rivals, including the AMD EPYC 9015 (0.1% slower) and Intel Core i9-14900 (1.1% faster), show that the 9900X is well-matched with other high-end processors, none of which would meaningfully change the game’s outcome.

Best Settings per Resolution

At 3840x2160 (4K), the most demanding preset that stays at or above 60 FPS is Low, which delivers an average of 61 FPS. The Medium preset falls to 46 FPS average, with a minimum of 39 and maximum of 53, so it cannot sustain playable frame rates. High and Ultra average 35 and 33 FPS respectively, making them unplayable at this resolution.

At 2560x1440 (1440p), the best playable preset is High, averaging exactly 60 FPS. The Medium preset averages 78 FPS (min 66, max 90), and Low averages 103 FPS, both also clearing the 60 FPS threshold. Ultra averages 57 FPS, just below the playable threshold, so it is excluded from the playable list.

At 1920x1080 (1080p), the best playable preset is Ultra, averaging 83 FPS. This is the only resolution where the highest quality settings are fully playable. High averages 87 FPS, Medium 114 FPS (min 97, max 131), and Low 150 FPS, all comfortably above the threshold.

CPU and GPU Roles

The data reveals a clear GPU-bound scenario at higher resolutions and a CPU-bound scenario only at the lowest settings. At 4K, the frame rate drops from 61 FPS on Low to 35 FPS on High, a 43% reduction, while the CPU remains largely idle. This steep scaling with settings indicates the GPU is the sole bottleneck at 4K, as the Ryzen 9 9900X’s single-thread score of 1,286 in 3DMark and Cinebench R23 single-core score of 2,253 are far beyond what Thief needs.

At 1440p, the pattern shifts slightly. The gap between Low (103 FPS) and Ultra (57 FPS) is 45%, again pointing to GPU limitations. However, the fact that High exactly hits 60 FPS while Ultra misses by 3 FPS suggests the GPU is right at the edge of its capability. The CPU’s role becomes more visible at 1080p, where Low settings produce 150 FPS, a figure that exceeds what the GPU alone could sustain at higher settings. The jump from Medium (114 FPS) to Low (150 FPS) is 32%, while the jump from Ultra (83 FPS) to High (87 FPS) is only 5%, indicating diminishing GPU returns at the highest presets.

Scaling between resolutions at the same settings further clarifies the roles. At High settings, the frame rate drops from 87 FPS at 1080p to 60 FPS at 1440p (31% reduction) and then to 35 FPS at 4K (42% reduction from 1440p). This consistent decline with pixel count confirms the GPU is the primary constraint. The CPU’s 12 cores and 24 threads provide no measurable benefit, as Thief is a 2014 title that likely uses only a few threads. The Arc B580’s 13.67 TFLOPS FP32 performance and 456 GB/s memory bandwidth are the specs that determine the outcome.

Similar Performance Alternatives

The nearest CPU rivals to the Ryzen 9 9900X are all server or high-end desktop parts with average scores within 1.4% of the 9900X’s 57,498. The AMD EPYC 9015 scores 57,555 (0.1% faster), the AMD EPYC 7313 scores 57,399 (0.2% slower), the Intel Core i9-14900 scores 58,115 (1.1% faster), and the Intel Xeon Platinum 8260M scores 58,323 (1.4% faster). For Thief, any of these CPUs would produce identical frame rates, as the game does not stress multi-threaded performance. The 9900X’s 3DMark single-thread score of 1,286 and Cinebench R23 single-core score of 2,253 are the relevant metrics, and all rivals fall within a similar range.

The GPU’s nearest rivals are a more varied group. The AMD Radeon RX 580 2048SP scores 23,061 (0.2% faster), the NVIDIA GeForce RTX 2080 scores 22,895 (0.6% slower), the RTX 3080 scores 23,172 (0.7% faster), and the NVIDIA P106-100 scores 23,249 (1% faster). In Thief, these cards would produce nearly identical results to the Arc B580. The RTX 2080 and RTX 3080 are interesting comparisons because they are older NVIDIA cards with different architectures, yet their average scores land within 1% of the B580. A user with any of these GPUs paired with the 9900X would see the same 61 FPS at 4K Low, 60 FPS at 1440p High, and 83 FPS at 1080p Ultra.

Measured FPS Breakdown

At 3840x2160, the measured results are: Low averages 61 FPS, Medium averages 46 FPS (min 39, max 53), High averages 35 FPS, and Ultra averages 33 FPS. The minimum and maximum values are only recorded for Medium, showing a 14 FPS spread between the 39 FPS minimum and 53 FPS maximum, which indicates some scene-to-scene variability at this resolution.

At 2560x1440, Low averages 103 FPS, Medium averages 78 FPS (min 66, max 90), High averages 60 FPS, and Ultra averages 57 FPS. The Medium preset shows a 24 FPS spread, which is wider than at 4K, suggesting the GPU is less consistently stressed at this resolution. The drop from Medium to High is 18 FPS, while the drop from High to Ultra is only 3 FPS, showing that the Ultra preset is not significantly more demanding than High in this game.

At 1920x1080, Low averages 150 FPS, Medium averages 114 FPS (min 97, max 131), High averages 87 FPS, and Ultra averages 83 FPS. The Medium preset shows a 34 FPS spread between minimum and maximum, the largest variability in the dataset. The scaling from Low to Medium is 36 FPS, from Medium to High is 27 FPS, and from High to Ultra is only 4 FPS. This last gap indicates that Ultra is nearly identical to High in GPU load, and the 83 FPS average at Ultra is only 4% lower than High’s 87 FPS.

FAQ

Q: Can this PC run Thief at 4K with playable frame rates?

A: Yes, but only at Low settings. The 4K Low preset averages 61 FPS, which clears the 60 FPS threshold. Medium drops to 46 FPS average, and High and Ultra average 35 and 33 FPS respectively, so they are not playable at 4K.

Q: What is the best setting at 1440p?

A: High is the best playable setting at 2560x1440, averaging exactly 60 FPS. Medium and Low also clear the threshold at 78 and 103 FPS respectively, but Ultra falls short at 57 FPS.

Q: Is the CPU or GPU the bottleneck in Thief?

A: The GPU is the bottleneck at all resolutions and settings tested. The Ryzen 9 9900X’s single-thread performance is far beyond what Thief requires, and frame rates scale consistently with resolution and settings, which is characteristic of GPU-limited performance.

Q: How does the Intel Arc B580 compare to its nearest rivals in this game?

A: The B580’s average score of 23,021 is within 1% of the AMD Radeon RX 580 2048SP (23,061), NVIDIA GeForce RTX 2080 (22,895), RTX 3080 (23,172), and NVIDIA P106-100 (23,249). In Thief, these cards would produce nearly identical frame rates.

Q: What is the highest playable preset at 1080p?

A: Ultra is playable at 1920x1080, averaging 83 FPS. This is the only resolution where the highest quality preset clears the 60 FPS threshold. High averages 87 FPS, Medium 114 FPS, and Low 150 FPS.

Q: Does the Ryzen 9 9900X provide any advantage in Thief over cheaper CPUs?

A: No measurable advantage exists. The CPU’s nearest rivals, including the AMD EPYC 9015 and Intel Core i9-14900, all score within 1.4% of the 9900X’s average benchmark score. Since Thief does not scale with multi-threaded performance, any of these CPUs would produce identical frame rates.

The Verdict

This PC can run Thief, but the playable envelope depends heavily on resolution. At 3840x2160, the only playable setting is Low, with an average of 61 FPS — just barely clearing the threshold. At 2560x1440, High is the best playable preset at exactly 60 FPS, with Medium and Low also playable at 78 and 103 FPS. At 1920x1080, Ultra is playable at 83 FPS, and all other presets are comfortably above the 60 FPS threshold.

The verdict is clear: the system is fully playable at 1080p with maximum settings, playable at 1440p with High settings (but not Ultra), and only playable at 4K with Low settings. The 12-core CPU is wasted on this title, as the GPU’s 12 GB of memory and 456 GB/s bandwidth determine the outcome. The Arc B580’s performance tier, as evidenced by its average benchmark score of 23,021, places it in a band where 60 FPS at 1440p High is achievable but 4K Ultra is out of reach. For a game from 2014, this is a modest result, but it does meet the playable threshold at every resolution with the appropriate settings.