Thief

# Thief Performance Analysis: Intel Core i5-14600K + Intel Arc B370

The Intel Core i5-14600K paired with the Intel Arc B370 produces a striking performance profile in Thief, one defined by severe GPU limitation at higher resolutions and a surprisingly playable experience only at 1080p with reduced settings. The combo ranks 2634th out of 2851 tested combinations, placing it in the bottom 8% of all systems, a direct consequence of the Arc B370's position as an integrated-class part with just 5th percentile standing among all GPUs. While the CPU is a top-tier desktop processor, the GPU's 25 W TDP and system-shared memory architecture create a bottleneck that dominates every benchmark result in this stealth title.

Resolution Scaling

The measured FPS data reveals a harsh resolution scaling curve that exposes the GPU as the primary limiting component. At 1080p with Low settings, the system achieves 78 FPS, but this drops to 53 FPS at 1440p and further to 31 FPS at 4K. That represents a 32% performance loss when moving from 1080p to 1440p, and a 60% loss from 1080p to 4K. The scaling is consistent with a GPU that is running out of fillrate and memory bandwidth as pixel count increases.

The High settings preset tells a similar story with slightly lower absolute numbers. At 1080p High, the system delivers 45 FPS, falling to 31 FPS at 1440p (a 31% drop) and 18 FPS at 4K (a 60% drop from 1080p). The consistency of these percentage drops across settings presets suggests that resolution scaling is governed primarily by the GPU's fixed capabilities rather than by any particular setting interaction.

Medium settings at 1080p produce 59 FPS, which drops to 41 FPS at 1440p and 24 FPS at 4K. The 4K Medium result includes measured minimum and maximum values of 20 FPS and 27 FPS respectively, indicating some frame time variance but no catastrophic stuttering. Ultra settings at 1080p yield 43 FPS, dropping to 29 FPS at 1440p and 17 FPS at 4K. The Ultra 4K result of 17 FPS is the lowest recorded in the entire dataset, making the game effectively unplayable at that configuration.

The pattern is unambiguous: this system is not resolution-flexible. The gap between 1080p and 1440p is consistently around 30%, and the gap between 1440p and 4K is consistently around 40-45%. This near-linear degradation with pixel count indicates that the Arc B370's fillrate and memory subsystem are saturated even at 1080p, and every additional pixel directly competes for the same limited resources. The CPU, by contrast, has ample headroom at all resolutions, as evidenced by the fact that the performance ceiling at 1080p Low (78 FPS) is still well below what a 14-core Raptor Lake processor could theoretically feed.

GPU Role

The Intel Arc B370 is the dominant constraint in this system. Its benchmark profile is startlingly weak: a single 3DMark Steel Nomad DX12 score of 1184 places it in the 5th percentile of all GPUs, with nearest rivals including the ATI Mobility Radeon HD 5570 (score 1186, delta -0.2%), the ATI Radeon HD 5770 (score 1190, delta -0.5%), and the AMD Radeon HD 7650M (score 1192, delta -0.7%). The Arc B370 is effectively trading blows with graphics hardware from over a decade ago, which explains why Thief's 2014-era visuals still overwhelm it.

The GPU's specifications reinforce this assessment. It runs at a 300 MHz base clock with a 2400 MHz boost, but its memory configuration is "System Shared" — meaning it draws from the CPU's main memory pool with bandwidth described only as "System Dependent." The 1280 shading units, 40 texture mapping units, and 20 ROPs produce a pixel rate of 48.00 GPixel/s and a texture rate of 96.00 GTexel/s. These are modest figures for a GPU with a 3 nm process node and Xe3-LPG architecture, but the 25 W TDP and IGP slot width reveal its true nature as an integrated solution, not a discrete graphics card.

The practical impact on Thief is evident in the FPS numbers. At 1080p Low, the system manages 78 FPS, which is the only configuration that approaches smooth gameplay. But even this result requires the lowest quality preset. The fact that the GPU's nearest rivals are all older ATI/AMD parts with similar or slightly higher scores — the HD 5770 at 1190 and the HD 7650M at 1192 — contextualizes the Arc B370's standing: it is not merely underpowered for modern games, but underpowered for games from the early 2010s.

The GPU's API support is modern — DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 — which means it can technically run contemporary titles, but its raw throughput is the bottleneck. In Thief, a game that relies heavily on shadow rendering and geometric detail, the GPU's 20 ROPs and 96 GTexel/s texture rate are insufficient for anything beyond 1080p Low or Medium. The drop from 59 FPS at 1080p Medium to 41 FPS at 1440p Medium demonstrates that even modest resolution increases overwhelm the memory subsystem, which is shared with the CPU and subject to system-dependent bandwidth limitations.

CPU Role

The Intel Core i5-14600K is a high-end desktop processor that is almost entirely untapped in this configuration. With 14 cores, 20 threads, and a boost clock of 5.30 GHz, this Raptor Lake Refresh chip sits in the 90th percentile of all CPUs, with an average benchmark score of 48618. Its nearest rivals include the Intel Xeon Gold 5318H (score 48698, delta -0.2%), the AMD EPYC 4345P (score 48470, delta 0.3%), and the Intel Core Ultra 5 245HX (score 48287, delta 0.7%). The Core i5-14600K is a serious multi-threaded workhorse, yet Thief never comes close to stressing it.

The CPU's benchmark results show strength across the board: a Cinebench R23 multi-core score of 24491, a single-core score of 2064, Geekbench multi-core of 16673, and a Passmark multi-thread score of 38682. With 24 MB of shared L3 cache and 2 MB of L2 cache per core, the processor has ample memory hierarchy for feeding game data. Its 125 W TDP and Intel Socket 1700 mounting are standard for a desktop part, and it supports both DDR4 and DDR5 memory, though the GPU's system-shared memory means the actual memory configuration will directly impact graphics performance.

In Thief, the CPU's role is to feed the GPU with draw calls and game logic, but the Arc B370's limitations mean the CPU is rarely the limiting factor. Evidence for this comes from the resolution scaling: if the CPU were the bottleneck, we would expect FPS to remain relatively constant across resolutions, but instead we see the steep drops described earlier. At 1080p Low, the system reaches 78 FPS, which is likely near the GPU's maximum output; at 4K Ultra, the 17 FPS result is purely a GPU constraint. The CPU's 5.30 GHz boost clock and modern architecture are more than capable of handling Thief's single-threaded and lightly-threaded workloads, which date from 2014 and do not require 14 cores or 20 threads.

The CPU's percentile ranking of 90th among all processors, versus the GPU's 5th percentile, creates an extreme imbalance. The data suggests that swapping the Arc B370 for a more powerful discrete GPU would yield dramatic FPS improvements across all resolutions, while upgrading the CPU would produce negligible gains in this title. The Core i5-14600K's Cinebench R15 single-core score of 297 and Passmark single-thread score of 4270 indicate strong per-thread performance, which is what Thief's engine primarily utilizes, but the GPU simply cannot convert that CPU headroom into frames.

How This Combo Ranks

The combo ranks 2634th out of 2851 tested combinations, placing it in the bottom 7.6% of all systems tested in Thief. This ranking is a direct reflection of the GPU's severe limitation, as the CPU would rank near the top of any processor-only comparison. The 217-combo gap between this system and the median performer illustrates how far this pairing falls below typical gaming configurations.

The ranking makes sense when considering the GPU's nearest rivals. The Arc B370's 3DMark Steel Nomad score of 1184 is essentially tied with the ATI Mobility Radeon HD 5570 (1186, delta -0.2%) and the ATI Radeon HD 5770 (1190, delta -0.5%), both of which are legacy mobile and desktop parts respectively. The AMD FirePro M2000 (score 1168, delta 1.4%) is the one rival that scores lower, but the margin is negligible. In a game like Thief, which was released in 2014 and has modest GPU requirements by modern standards, this level of performance relegates the system to low-resolution, low-quality gaming.

The CPU's rivals, by contrast, are all modern server or high-end desktop parts. The Intel Xeon Gold 5318H and AMD EPYC 4345P are enterprise processors, while the Intel Core Ultra 5 245HX and Core Ultra 5 245 are current-generation client chips. The fact that the Core i5-14600K trades blows with these parts in average benchmark score (48618 vs. their 48287-48995 range) confirms that the CPU is not the issue. The combo rank is therefore a measure of the GPU's inadequacy, not the CPU's.

For context, a combo ranked in the top 10% would likely pair a similar CPU with a mid-range discrete GPU, achieving 100+ FPS at 1080p in Thief. The data shows this system cannot reach 60 FPS at any resolution above 1080p, and even at 1080p it only exceeds 60 FPS on Low settings. The 2634th rank is a clear signal that this configuration is unsuitable for mainstream gaming, despite the CPU's high-end credentials.

Measured FPS Breakdown

The complete FPS dataset for this combo is as follows:

At 1920x1080, the system delivers its best results. On Low settings, the average FPS is 78, which is the only configuration in the entire dataset that provides a smooth, responsive experience. Medium settings produce 59 FPS average, with a minimum of 50 FPS and a maximum of 68 FPS, indicating playable but not perfectly stable performance. High settings yield 45 FPS average, while Ultra settings drop to 43 FPS average. The gap between High and Ultra at 1080p is just 2 FPS, suggesting that the Ultra preset's additional effects are mostly GPU-bound but the GPU is already saturated.

At 2560x1440, performance degrades significantly. Low settings produce 53 FPS average, which is still technically playable but below the 60 FPS threshold. Medium settings drop to 41 FPS average, with a minimum of 35 FPS and a maximum of 47 FPS, making frame pacing a concern during action sequences. High settings yield 31 FPS average, and Ultra settings produce 29 FPS average. The 1440p results show that even the lowest quality preset cannot maintain 60 FPS, confirming that the GPU's fillrate and memory bandwidth are insufficient for this resolution.

At 3840x2160, the system is largely unplayable. Low settings produce 31 FPS average, which is below acceptable smoothness for a stealth game requiring precise timing. Medium settings yield 24 FPS average, with a minimum of 20 FPS and a maximum of 27 FPS, meaning the frame rate can dip to slideshow levels during busy scenes. High settings produce 18 FPS average, and Ultra settings yield 17 FPS average. The 4K results are uniformly poor, with no configuration reaching even 35 FPS.

The medium settings presets are the only ones with full min/max data. At 1080p Medium, the 50-68 FPS range shows a 36% variance between minimum and maximum, which could cause perceptible stutter. At 1440p Medium, the 35-47 FPS range shows a 34% variance. At 4K Medium, the 20-27 FPS range shows a 35% variance. This consistent ~35% frame time variance across resolutions suggests the GPU's memory sharing with the CPU creates unpredictable performance spikes, likely due to memory bandwidth contention.

FAQ

Q: What is the best playable configuration for this system in Thief?

A: The only configuration that exceeds 60 FPS is 1920x1080 with Low settings, producing 78 FPS average. The 1080p Medium preset at 59 FPS average is borderline playable, with a minimum of 50 FPS, but the 1080p High (45 FPS) and Ultra (43 FPS) presets fall below smooth gameplay thresholds.

Q: How does this system compare to other GPUs in the same performance class?

A: The Intel Arc B370 scores 1184 in 3DMark Steel Nomad DX12, placing it effectively tied with the ATI Mobility Radeon HD 5570 (1186, delta -0.2%) and the ATI Radeon HD 5770 (1190, delta -0.5%). The AMD Radeon HD 7650M scores marginally higher at 1192 (delta -0.7%), while the AMD FirePro M2000 scores lower at 1168 (delta 1.4%).

Q: Is the Intel Core i5-14600K the bottleneck in Thief?

A: No. The CPU ranks in the 90th percentile of all processors with an average benchmark score of 48618, and its nearest rivals include the Intel Xeon Gold 5318H and AMD EPYC 4345P. The GPU ranks in the 5th percentile, and the steep FPS drops with increasing resolution confirm that the Arc B370 is the limiting component.

Q: What resolution should I use if I want to play Thief on this system?

A: 1920x1080 is the only viable resolution. At 2560x1440, even Low settings only reach 53 FPS, and at 3840x2160, all settings presets produce average FPS below 32. For a playable experience, 1080p with Low or Medium settings is recommended.

Q: Why does the 4K Ultra preset perform so poorly?

A: The 4K Ultra preset produces 17 FPS average, the lowest of any configuration. This is due to the GPU's 20 ROPs and 48.00 GPixel/s pixel rate, which are overwhelmed by the 8.3 million pixels at 3840x2160 combined with the Ultra preset's maximum shadow and geometric detail.

Q: How does the combo's overall ranking reflect its gaming capability?

A: The combo ranks 2634th out of 2851 tested combinations, placing it in the bottom 8% of all systems tested in Thief. This ranking is consistent with the GPU's 5th percentile standing among all GPUs, and it indicates that this system is not suitable for gaming beyond low-resolution, low-quality settings.