Thief

# Thief with AMD Ryzen 9 5900X + Intel Arc B570

The AMD Ryzen 9 5900X paired with the Intel Arc B570 delivers playable frame rates across most of Thief's settings and resolutions, but the data reveals a clear pattern: this combo is firmly a 1080p performer, with 1440p requiring settings compromises and 4K pushing the GPU to its limits. The measured results show average FPS ranging from 133 at 1080p Low down to 29 at 4K Ultra, a spread that underscores where the bottleneck sits and what you can realistically expect from this pairing.

Resolution Scaling

The frame rate drop from 1080p to 4K is steep and consistent across all settings, pointing directly at the Intel Arc B570 as the limiting factor. At Low settings, the combo delivers 133 FPS at 1920x1080, drops to 91 FPS at 2560x1440, and then falls to 54 FPS at 3840x2160. That is a 59% reduction from 1080p to 1440p, and another 41% drop from 1440p to 4K. The scaling is not linear — the gap between 1440p and 4K is proportionally larger than the gap between 1080p and 1440p, which is typical when the GPU's pixel throughput becomes the dominant constraint.

At Medium settings, the same pattern holds: 101 FPS at 1080p, 69 FPS at 1440p, and 41 FPS at 4K. The 1080p-to-1440p drop is 32 FPS, while the 1440p-to-4K drop is 28 FPS. At High settings, the numbers are 77 FPS, 53 FPS, and 31 FPS respectively, showing a 24 FPS loss from 1080p to 1440p and a 22 FPS loss from 1440p to 4K. Ultra settings follow suit: 73 FPS at 1080p, 50 FPS at 1440p, and 29 FPS at 4K.

The fact that the frame rate roughly halves when moving from 1080p to 4K at every preset is a strong indicator that the Arc B570 is the bottleneck. The Ryzen 9 5900X, with its 12 cores and 24 threads, is more than capable of feeding the GPU at lower resolutions — the 133 FPS at 1080p Low shows there is CPU headroom. But as resolution increases, the GPU's workload scales with pixel count, and the B570's 11.52 TFLOPS of FP32 compute and 380.0 GB/s memory bandwidth begin to show their limits.

The measured data also includes min and max FPS for Medium settings at each resolution, which provides insight into frame pacing. At 1080p Medium, the range is 86 to 116 FPS around the 101 average. At 1440p Medium, it narrows to 59 to 79 FPS. At 4K Medium, it tightens further to 35 to 47 FPS. The shrinking variance at higher resolutions suggests that the GPU is consistently saturated, leaving less room for frame time spikes. This is a sign that the system is stable but fully loaded at 4K — there is no hidden CPU-related stutter, just steady, GPU-bound performance.

Settings Recommendations

For 1920x1080, the data supports running Ultra settings without hesitation. The measured 73 FPS average at Ultra is well above playable thresholds, and even the High preset at 77 FPS offers only a marginal improvement. The gap between High and Ultra at 1080p is just 4 FPS, which means you are giving up almost nothing by maxing out the game's visual options. Low settings at 1080p push the combo to 133 FPS, but that is far beyond what most displays can show and comes with significant visual sacrifices. For a 60 Hz or 144 Hz monitor, Ultra is the clear choice at 1080p.

At 2560x1440, the decision becomes more nuanced. The Ultra preset averages 50 FPS, which is playable but not smooth on high-refresh displays. High settings bump that to 53 FPS, a negligible gain. Medium settings, however, jump to 69 FPS — a 38% improvement over Ultra — while still looking respectable. The measured min FPS of 59 at Medium confirms that the frame rate stays above 60 FPS for the most part, making it the sweet spot for 1440p. If you prioritize visual fidelity over smoothness, Ultra is workable, but the data suggests Medium offers the best balance of frame rate and stability.

At 3840x2160, the situation is more constrained. Ultra settings produce just 29 FPS, which is below the threshold for comfortable play. High settings are barely better at 31 FPS. Medium settings reach 41 FPS, which is playable but still not ideal. Low settings are the only preset that breaks 50 FPS, hitting 54 FPS on average. For 4K, the recommendation is to use Low settings if you need smooth gameplay, or Medium if you can tolerate occasional dips. The 35 FPS minimum at Medium 4K means there will be moments of noticeable slowdown, so Low is the safer bet for consistent performance.

Across all resolutions, the pattern is clear: the Arc B570 has enough power for Ultra at 1080p, Medium at 1440p, and Low at 4K. The Ryzen 9 5900X never appears to be the limiting factor, as the frame rates scale predictably with resolution and settings changes.

GPU Role

The Intel Arc B570 is the component that determines this combo's gaming performance in Thief. Its specifications — 10 GB of GDDR6 memory on a 160-bit bus with 380.0 GB/s bandwidth — are modest by modern standards, but they are sufficient for a 2014 game like Thief, which does not demand massive texture pools. The GPU's 2304 shading units, 144 texture mapping units, and 80 render output units provide the raw throughput that drives the measured frame rates.

The clock behavior is worth noting. The B570's base and boost clocks are both listed at 2500 MHz, which means the GPU runs at a fixed frequency under load. This is unusual and likely a design choice to maintain consistent performance. The memory clock is 2375 MHz with 19 Gbps effective speed, which translates to that 380.0 GB/s bandwidth. At 4K Ultra, the combo manages 29 FPS, and at 4K Low it hits 54 FPS — a 25 FPS swing that shows how sensitive the GPU is to settings changes at high pixel counts.

The GPU's benchmark scores place it in context. Its 3DMark Steel Nomad DX12 score is 2649, and its Passmark G3D score is 14195. These are mid-range figures, consistent with the measured gaming performance. The GPU's percentile ranking of 65 means it outperforms 65% of all GPUs in the database, which aligns with the 1080p-focused results seen here. The nearest rivals include the NVIDIA GeForce RTX 3070 Mobile with a 0.1% delta in average score, and the Intel Arc A750 at -0.1%, indicating the B570 sits in a competitive but not class-leading position.

The 10 GB VRAM capacity is not stressed by Thief, even at 4K with Ultra settings, given the game's 2014 release date. The memory bandwidth of 380.0 GB/s is more likely the limiting factor at 4K, as the GPU must fetch and process more pixel data per frame. This is reflected in the steep frame rate drops at 4K compared to 1440p.

How This Combo Ranks

The combo's ranking in Thief is 2296 out of 2851 tested combinations, placing it in the lower third of the database. This rank reflects the Arc B570's mid-range positioning rather than any deficiency in the Ryzen 9 5900X. The CPU itself is a strong performer — its Cinebench R23 multi-core score of 16262 and single-core score of 1527 put it in the 87th percentile of all CPUs — but in this game, the GPU is the deciding factor.

The CPU's nearest rivals in synthetic benchmarks include the Intel Core Ultra 7 366H with a 0.3% higher average score, and the Intel Core Ultra 7 356H at 0.4% higher, while the Intel Core i7-14650HX trails by 0.5%. These tight margins show the 5900X is competitive with modern mobile chips, but that does not translate to a high game-specific rank when paired with a mid-range GPU.

The combo rank of 2296 out of 2851 means there are 555 tested combinations that perform worse, but the vast majority of combos outperform this pairing in Thief. This is expected for a GPU that ranks in the 65th percentile overall. The data suggests that if you already own a Ryzen 9 5900X, the Arc B570 is a reasonable match for 1080p gaming, but it will limit your options at higher resolutions. Conversely, if you are building around the B570, the 5900X provides ample CPU headroom for future GPU upgrades.

The gap between the CPU's high percentile (87) and the GPU's lower percentile (65) creates an imbalance that shows up in the game results. At 1080p, the CPU can push the GPU to 133 FPS at Low settings, indicating the B570 is the ceiling. At 4K, the GPU is clearly overwhelmed, and the CPU's extra power goes unused.

FAQ

Q: Is this combo capable of running Thief at 4K?

A: Yes, but only at lower settings. The measured results show 54 FPS at 4K Low and 41 FPS at 4K Medium. High and Ultra settings produce 31 FPS and 29 FPS respectively, which are below comfortable playable levels.

Q: What is the best resolution for this combo in Thief?

A: The data shows 1920x1080 is the strongest resolution, with 73 FPS at Ultra settings and 133 FPS at Low. At 2560x1440, the best playable option is Medium at 69 FPS, while 3840x2160 requires Low settings for 54 FPS.

Q: How does the Ryzen 9 5900X compare to its nearest rivals?

A: The 5900X has an average benchmark score of 41376, which is 0.3% higher than the Intel Core Ultra 7 366H and 0.4% higher than both the Intel Core Ultra 7 356H and the AMD Ryzen AI 5 PRO 440. It trails the Intel Core i7-14650HX by 0.5%.

Q: Is the Intel Arc B570 the bottleneck in this pairing?

A: Yes. The frame rates drop dramatically as resolution increases, from 133 FPS at 1080p Low to 54 FPS at 4K Low. The GPU's 65th percentile ranking and 20556 average benchmark score indicate it is the limiting component, while the CPU's 87th percentile shows it has headroom.

Q: What settings should I use for 1440p gameplay?

A: Medium settings are the best choice at 2560x1440, delivering 69 FPS average with a 59 FPS minimum. High and Ultra both hover around 50-53 FPS, which is playable but less stable.

Q: How does the Arc B570 perform in synthetic benchmarks?

A: The GPU scores 2649 in 3DMark Steel Nomad DX12, 83514 in Geekbench OpenCL, and 96844 in Geekbench Vulkan. Its Passmark G3D score is 14195, and it ranks in the 65th percentile of all GPUs.

Measured FPS Breakdown

At 1920x1080, the combo delivers its best performance. Low settings produce an average of 133 FPS, Medium settings 101 FPS with a min of 86 and max of 116, High settings 77 FPS, and Ultra settings 73 FPS. The difference between High and Ultra is only 4 FPS, making Ultra the obvious choice for visual quality at this resolution.

At 2560x1440, the frame rates step down noticeably. Low settings average 91 FPS, Medium settings 69 FPS with a min of 59 and max of 79, High settings 53 FPS, and Ultra settings 50 FPS. The Medium preset offers the best frame time consistency, as indicated by the narrow min-max range.

At 3840x2160, the GPU is heavily taxed. Low settings average 54 FPS, Medium settings 41 FPS with a min of 35 and max of 47, High settings 31 FPS, and Ultra settings 29 FPS. The 4K Medium frame range shows a 12 FPS spread, suggesting occasional dips that could be noticeable during fast movement.

The full dataset shows a consistent pattern: each settings tier costs roughly 20-30% performance compared to the tier below, and each resolution step costs a similar amount. The Ultra preset at 1080p (73 FPS) is nearly identical to the Medium preset at 1440p (69 FPS), demonstrating how the GPU's workload scales with both resolution and quality settings. For this combo, the practical ceiling is 1080p Ultra or 1440p Medium, with 4K reserved for Low settings if you want playable frame rates.