Thief

Resolution Scaling

The measured data shows a steep and consistent frame rate penalty as resolution climbs from 1080p to 4K, a pattern that points squarely at the GPU as the limiting component in this pairing. At High settings, the Intel Arc B580 delivers 87 FPS at 1920x1080, but that figure drops to 60 FPS at 2560x1440, a 31% reduction, and then falls further to 35 FPS at 3840x2160, a 60% drop from the 1080p baseline. This scaling curve is characteristic of a GPU-bound scenario where pixel throughput, not CPU muscle, dictates performance.

The picture is even more revealing when looking at the Low preset. At 1080p Low, the system produces 150 FPS, which drops to 103 FPS at 1440p (a 31% decline) and then to 61 FPS at 4K (a 59% decline from 1080p). The nearly identical percentage drops between High and Low settings across resolutions indicate that the GPU's raw fillrate and memory bandwidth are the dominant constraints. If the CPU were the bottleneck, the gap between Low and High settings at the same resolution would be far smaller, and the resolution scaling would flatten out at higher pixel counts. Instead, the data shows that even at Low settings, where CPU overhead is typically the limiting factor, the frame rate still collapses by roughly 60% at 4K, confirming that the Arc B580 is saturated by pixel workload before the Ryzen 9 9900X3D can even be taxed.

The Medium preset offers the only data points with min and max FPS recorded, providing additional insight into frame pacing. At 1080p Medium, the average is 114 FPS with a min of 97 and max of 131, a spread of 34 FPS. At 1440p Medium, the average falls to 78 FPS with a min of 66 and max of 90, a wider relative spread. At 4K Medium, the average drops to 46 FPS with a min of 39 and max of 53. The min-to-max range shrinks in absolute terms as resolution rises, but the variance relative to the average remains consistent, suggesting that the GPU is not experiencing intermittent stalls but rather a steady, predictable load increase.

The verdict from the scaling data is unambiguous: this is a GPU-limited configuration at every resolution tested. The 12-core, 24-thread Ryzen 9 9900X3D has ample headroom to feed the Arc B580 at 1080p and 1440p, but the GPU's 192-bit memory bus and 456.0 GB/s bandwidth become the wall at 4K. Users targeting 4K should expect to lower settings significantly, as the jump from Medium (46 FPS) to High (35 FPS) at 4K costs 11 FPS, while the jump from Low (61 FPS) to Medium (46 FPS) costs 15 FPS. The scaling curve is steep throughout, but the 4K Ultra preset at 33 FPS is the least playable configuration in the entire measured set.

GPU Role

The Intel Arc B580 is a 5 nm Battlemage part with 2560 shading units, 160 TMUs, and 80 ROPs, paired with 12 GB of GDDR6 memory on a 192-bit bus. Its base and boost clocks are both locked at 2670 MHz, which is a notably high sustained clock for a GPU in this class. The memory runs at 2375 MHz with 19 Gbps effective transfer, yielding a bandwidth of 456.0 GB/s. These specifications position the card in the 68th percentile of all GPUs in the benchmark database, with an average score of 23021.

The game's measured results align closely with the card's synthetic performance profile. At 1080p Low, the card achieves 150 FPS, which is a strong result but not exceptional for a GPU with 13.67 TFLOPS of FP32 compute. The fact that the score drops to 83 FPS at 1080p Ultra, a 45% reduction, shows that the game's higher presets are demanding on pixel fillrate and memory bandwidth. The 12 GB VRAM is not a limiting factor in this title, as Thief from 2014 is a modest VRAM consumer by modern standards; the data shows no anomalous frame drops that would indicate memory capacity issues.

The GPU's nearest rivals in the benchmark database include the AMD Radeon RX 580 2048SP (average score 23061, delta -0.2%), the NVIDIA GeForce RTX 2080 (average score 22895, delta 0.6%), the NVIDIA GeForce RTX 3080 (average score 23172, delta -0.7%), and the NVIDIA P106-100 (average score 23249, delta -1%). The Arc B580 sits squarely in the middle of this group, within 1% of all four rivals. This is remarkable because the RTX 3080 is a much larger and more power-hungry card, yet the Arc B580 matches its average benchmark score. In Thief specifically, the card's performance at 1440p High (60 FPS) and 1080p High (87 FPS) suggests it competes favorably with these older high-end parts, though the 4K results (35 FPS at High) reveal that the 192-bit memory bus is a limiting factor compared to wider-interface cards.

The GPU's texture rate of 427.2 GTexel/s and pixel rate of 213.6 GPixel/s are the raw throughput figures that drive the game's frame rate. The data shows a clear correlation: at 1080p, where the pixel workload is manageable, the card's texture units are likely the primary engine, delivering 87 FPS at High. At 4K, the pixel rate becomes the bottleneck, and the frame rate drops to 35 FPS at High, matching the expected scaling from a 4x increase in pixel count. The card's 80 ROPs are insufficient for 4K Ultra (33 FPS) but adequate for 1080p Ultra (83 FPS), which is a typical trade-off for a GPU in this performance tier.

CPU Role

The AMD Ryzen 9 9900X3D is a 12-core, 24-thread desktop processor based on the Zen 5 architecture, codenamed Granite Ridge, built on TSMC's 4 nm process. It features a base clock of 4.40 GHz and a boost clock of 5.50 GHz, with a 120 W TDP. The processor has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and a substantial 128 MB of L3 cache, which is a hallmark of the X3D line designed to enhance gaming performance. It supports DDR5 memory in a dual-channel configuration with a bandwidth of 89.6 GB/s.

In the context of Thief, the CPU's role is secondary but not negligible. The game is a 2014 title with a stealth genre focus, and its engine is not known for heavy multi-threading requirements. At 1080p Low, the system produces 150 FPS, which is a clear indicator that the CPU is feeding the GPU adequately; if the CPU were a bottleneck, the frame rate would plateau well below this level. The jump from Low to Medium at 1080p (150 to 114 FPS) is a 24% drop, while the jump from Medium to High (114 to 87 FPS) is another 24% drop. These consistent deltas suggest that the CPU overhead is not the limiting factor at any setting, as the GPU is the one scaling with the preset changes.

The CPU's benchmark scores reinforce its capability. In Cinebench R23, it scores 47737 in multi-core and 6739 in single-core, placing it in the 91st percentile of all CPUs. Its nearest rivals include the Intel Core Ultra 5 245KF (average score 55093, delta -0.6%), the Intel Core Ultra 5 245K (average score 54053, delta 1.3%), the Intel Xeon 6505P (average score 53701, delta 2%), and the Intel Core i7-14700F (average score 53620, delta 2.1%). The 9900X3D's average benchmark score of 54762 is within 2.1% of all four rivals, meaning that in synthetic tests, the CPU is not dramatically faster than these alternatives. However, in gaming workloads, the 128 MB L3 cache and high boost clock of 5.50 GHz provide an advantage that is not fully captured by these synthetic scores.

The measured FPS data shows no evidence of CPU-induced stuttering or frame drops. The Medium preset's min FPS values (97 at 1080p, 66 at 1440p, 39 at 4K) are all well above the corresponding average FPS for the next higher preset, indicating that the CPU maintains frame delivery even when the GPU is heavily loaded. The CPU's 24 threads are far more than Thief requires, and the 12 cores are likely idle for most of the game's execution. The data suggests that a lower-core CPU would produce identical results in this title, confirming that the 9900X3D is overkill for this specific game but provides headroom for more demanding titles.

FAQ

Q: Why does the frame rate drop so much from 1080p to 4K?

A: The data shows a 60% drop from 1080p to 4K at High settings (87 to 35 FPS). This is because the GPU's pixel rate and memory bandwidth become the limiting factor at higher resolutions, while the CPU has ample headroom.

Q: Is the Ryzen 9 9900X3D bottlenecking the Arc B580 in Thief?

A: No. The 1080p Low result of 150 FPS demonstrates that the CPU can feed the GPU well beyond what the card can render. The 128 MB L3 cache and 5.50 GHz boost clock are more than sufficient for this 2014 title.

Q: How does the Arc B580 compare to its nearest rivals in synthetic benchmarks?

A: The Arc B580 has an average benchmark score of 23021, placing it within 1% of the AMD Radeon RX 580 2048SP (23061), NVIDIA GeForce RTX 2080 (22895), NVIDIA GeForce RTX 3080 (23172), and NVIDIA P106-100 (23249).

Q: What is the best resolution for this combo to maintain 60+ FPS?

A: At 1440p High, the system achieves exactly 60 FPS. At 1440p Medium, it reaches 78 FPS. For a consistent 60+ FPS experience, 1440p Medium or 1080p High (87 FPS) are the safest choices based on the measured data.

Q: Is the 12 GB VRAM sufficient for Thief?

A: Yes. The game's modest VRAM requirements are not a factor in the measured results. The data shows no frame drops that would indicate memory capacity issues, as the GPU's 192-bit bus bandwidth is the more significant constraint.

Q: Why does the Ultra preset at 4K only achieve 33 FPS?

A: The Ultra preset at 4K requires the GPU to process 8.3 million pixels per frame with maximum shading load. The Arc B580's 80 ROPs and 456.0 GB/s bandwidth are insufficient for this workload, resulting in the lowest measured average FPS in the dataset.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this configuration depend heavily on the target resolution and desired frame rate. For 1080p, the High preset at 87 FPS is the best balance of visual quality and performance; the Ultra preset at 83 FPS costs only 4 FPS and may be preferable for users with high-refresh displays, but the 114 FPS Medium preset is the smoothest option if frame rate is the priority. At 1440p, the High preset at 60 FPS is exactly at the threshold of smooth gameplay, but the Medium preset at 78 FPS provides a more comfortable margin for frame drops. The 4K resolution is the most challenging, with only the Low preset at 61 FPS achieving a playable result; the Medium preset at 46 FPS is marginal, and both High (35 FPS) and Ultra (33 FPS) are below acceptable thresholds for most players.

The data suggests that the Medium preset is the sweet spot for this game across all resolutions. At 1080p Medium, the system delivers 114 FPS with a min of 97, which is a 97th percentile frame rate that ensures no noticeable stutter. At 1440p Medium, the 78 FPS average with a min of 66 provides a good experience on 144Hz monitors. At 4K Medium, the 46 FPS average is below 60 but the min of 39 indicates that some scenes will dip into the 30s, which may be tolerable for a stealth game where reaction time is less critical. The Low preset is the only viable option for 4K at 61 FPS, but it sacrifices visual fidelity significantly.

For users with adaptive sync displays, the Ultra preset at 1080p (83 FPS) and 1440p (57 FPS) could be viable, as the frame rate is above the typical 40 FPS LFC threshold. However, for standard 60 Hz displays, the recommendation is clear: 1080p High (87 FPS) or 1440p High (60 FPS) if visual quality is paramount, or 1080p Medium (114 FPS) and 1440p Medium (78 FPS) for a smoother experience. The Ultra preset should be avoided at 4K, as the 33 FPS result is not playable in any meaningful sense.

Measured FPS Breakdown

1920x1080 (1080p):

• Low: 150 FPS average
• Medium: 114 FPS average, 97 min, 131 max
• High: 87 FPS average
• Ultra: 83 FPS average

The 1080p results show a clear progression from Low to Ultra, with a 45% drop from Low to Ultra (150 to 83 FPS). The Medium preset's min of 97 FPS is higher than the High preset's average of 87 FPS, indicating that Medium provides a more consistent frame delivery than High. The jump from High to Ultra is only 4 FPS, suggesting that the Ultra preset's additional effects are not heavily taxing the GPU at this resolution.

2560x1440 (1440p):

• Low: 103 FPS average
• Medium: 78 FPS average, 66 min, 90 max
• High: 60 FPS average
• Ultra: 57 FPS average

At 1440p, the Low preset maintains a three-digit frame rate at 103 FPS, but the Medium preset drops to 78 FPS with a min of 66. The High preset at 60 FPS is exactly at the 60 FPS target, but the min FPS is not recorded for this setting. The Ultra preset at 57 FPS is only 3 FPS lower than High, indicating that the Ultra preset's incremental cost is minimal at this resolution.

3840x2160 (4K):

• Low: 61 FPS average
• Medium: 46 FPS average, 39 min, 53 max
• High: 35 FPS average
• Ultra: 33 FPS average

The 4K results are the most demanding, with a 46% drop from Low to Ultra (61 to 33 FPS). The Low preset at 61 FPS is the only setting that clears 60 FPS, while the Medium preset at 46 FPS is borderline. The High and Ultra presets at 35 and 33 FPS respectively are not recommended for gameplay, as the min FPS is not recorded but the averages are well below smooth thresholds.

The data as a whole shows that this combination of the Ryzen 9 9900X3D and Intel Arc B580 is best utilized at 1080p or 1440p, where the GPU can deliver playable frame rates across all presets. The 4K resolution is only viable with the Low preset, and the measured FPS values confirm that the GPU is the definitive bottleneck in this configuration. The CPU's 91st percentile ranking does not translate to higher frame rates in this title, as the game's engine is not CPU-bound in any of the tested configurations.