Thief

Settings Recommendations

For Thief with the Intel Core i5-10400F and AMD Radeon RX 580, the measured data shows that Medium settings at 1920x1080 deliver the strongest balance of smoothness and visual fidelity. At 1080p Medium, the combo produces 65.4 FPS, which is 35% higher than High settings (48.3 FPS) and 49% higher than Ultra (44.0 FPS). The jump from Medium to Low at 1080p is 81.6 FPS, a 25% gain, but the visual compromise is substantial for a stealth game where shadow detail and object visibility matter. Medium at 1080p keeps the frame rate comfortably above 60 FPS while retaining enough graphical overhead to preserve the game's atmospheric lighting.

At 2560x1440, Medium settings yield 45.6 FPS, which is playable but below the 60 FPS threshold. Low settings at 1440p hit exactly 60 FPS, making that the only 1440p preset to reach a smooth experience. However, dropping to Low at 1440p sacrifices the visual polish that makes Thief's stealth environments readable. For users with 1080p displays, Medium is the clear recommendation. At 1440p, the choice depends on whether frame rate or fidelity takes priority; the data shows High at 1440p (32.6 FPS) is barely above the 30 FPS playability floor, while Ultra (28.4 FPS) falls below it. Low at 1440p is the only preset that achieves a locked 60 FPS experience.

The 4K results are uniformly below playable thresholds, with the best 4K preset being Low at 37.1 FPS. No 4K setting reaches 60 FPS, and Ultra at 4K drops to 18.9 FPS. For this game and this hardware combination, 4K is not a viable option for smooth gameplay.

GPU Role

The AMD Radeon RX 580's memory configuration is central to Thief's performance profile. The GPU features 8 GB of GDDR5 memory on a 256-bit bus, delivering 256.0 GB/s of bandwidth. The memory clock runs at 2000 MHz with 8 Gbps effective speed. This bandwidth proves sufficient for 1080p and 1440p gameplay, but the 4K results suggest the memory subsystem becomes a bottleneck at higher resolutions. The GPU's core clock operates at 1257 MHz base and 1340 MHz boost, with a pixel rate of 42.88 GPixel/s and texture rate of 193.0 GTexel/s.

The RX 580's FP32 compute of 6.175 TFLOPS places it in the mid-range tier, and its benchmark percentile of 53 versus all GPUs reflects this positioning. In Thief, the GPU's shading units (2304) and TMUs (144) handle the game's DirectX 11-era rendering efficiently at lower resolutions. The GPU's nearest rival, the NVIDIA GeForce GTX 570, scores nearly identically (13564 vs 13559 average, a 0% delta), while the GTX 950 is 0.1% behind and the AMD Radeon Pro 455 is 1.1% behind. This clustering shows the RX 580 sits at a performance plateau where small differences in architecture determine rankings.

The GPU's die size of 232 mm² and transistor count of 5,700 million (24.6M transistors per mm²) on a 14 nm process from GlobalFoundries indicate a mature design. The 185 W TDP and dual-slot cooler with a single 8-pin power connector are modest requirements. The GPU's DirectX 12 (12_0) support means it can handle Thief's API requirements, but the game's 2014 release predates DX12, so the card runs it through DX11 paths where its GCN 4.0 architecture performs capably.

FAQ

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

A: The measured data shows 1920x1080 is the only resolution where the combo exceeds 60 FPS on any preset. At 1080p Low, the average is 81.6 FPS; at Medium it is 65.4 FPS. At 1440p, only Low reaches exactly 60 FPS, and at 4K, the highest average is 37.1 FPS on Low.

Q: How does the RX 580 compare to its nearest GPU rivals in this benchmark?

A: The RX 580's average benchmark score is 13559, which is essentially tied with the NVIDIA GeForce GTX 570 (13564, 0% delta) and GTX 950 (13549, 0.1% delta). The AMD Radeon Pro 455 trails by 1.1% (13416), while the NVIDIA P106-090 leads by 1.1% (13716).

Q: Does the CPU bottleneck the GPU in Thief?

A: The Intel Core i5-10400F has a passmark multithread score of 12115 and a single-thread score of 2541, with a 73rd percentile ranking among all CPUs. The game's frame rates scale consistently with resolution changes, suggesting the GPU is the primary limiter at higher settings, but the CPU's 6 cores and 12 threads prevent it from being a constraint at 1080p Medium and below.

Q: What is the frame rate difference between Low and Ultra at 1080p?

A: At 1920x1080, Low averages 81.6 FPS, Medium 65.4 FPS, High 48.3 FPS, and Ultra 44.0 FPS. The gap from Low to Ultra is 37.6 FPS, meaning Ultra delivers 46% lower performance than Low.

Q: Is 4K playable with this combo in Thief?

A: No. The best 4K result is Low settings at 37.1 FPS, which is below the 60 FPS standard for smooth play. Medium at 4K drops to 25.3 FPS, High to 22.2 FPS, and Ultra to 18.9 FPS. All 4K presets fall below 40 FPS.

Q: How does the i5-10400F rank against its nearest CPU rivals?

A: The i5-10400F has an average benchmark score of 14168, placing it 0.4% above the AMD EPYC 7552 (14115) and 1.1% above the Intel Core i5-8500 (14332). The AMD Ryzen 3 7320C leads by 0.8% (14277), and the AMD Ryzen Embedded V2546 leads by 1.2% (14336).

How This Combo Ranks

The Intel Core i5-10400F + AMD Radeon RX 580 combination ranks 1521 out of 1642 tested combos in Thief, placing it in the bottom 7% of all configurations. This low ranking is notable because the individual components are not bottom-tier: the CPU sits at the 73rd percentile among all CPUs, and the GPU at the 53rd percentile. The discrepancy suggests that this pairing is suboptimal for Thief specifically, likely because the game's engine favors different hardware characteristics than what this combo provides.

The rank of 1521 means that 121 other combos perform worse, but the vast majority of tested configurations (1641) outperform this one. For context, the CPU's nearest rivals — the AMD EPYC 7552, Ryzen 3 7320C, Core i5-8500, and Ryzen Embedded V2546 — all have average scores within 1.2% of the i5-10400F, so the CPU itself is not the weak link. Similarly, the GPU's nearest rivals score within 1.1% of the RX 580. Yet when combined, they produce results that rank near the bottom. This points to a compatibility or driver-level inefficiency in Thief rather than raw hardware weakness.

The data shows that this combo's performance is consistent with what one would expect from mid-range parts, but the game's 2014 engine appears to penalize this specific combination. At 1080p Medium, the 65.4 FPS result is respectable, but the ranking suggests that other hardware pairings of similar individual scores achieve notably better results in Thief. The combo's ranking relative to its component percentiles indicates a 20-point drop in relative standing, meaning the whole is less than the sum of its parts for this game.

Resolution Scaling

The frame rate scaling from 1080p to 4K reveals a GPU-bound scenario at higher resolutions. At Low settings, the average FPS drops from 81.6 at 1080p to 60.0 at 1440p (a 26% reduction) and then to 37.1 at 4K (a 55% reduction from 1440p). This steep decline in the 1440p-to-4K transition indicates that the RX 580's memory bandwidth of 256.0 GB/s becomes saturated as pixel count increases dramatically.

At Medium settings, the progression is 65.4 FPS at 1080p, 45.6 FPS at 1440p (30% lower), and 25.3 FPS at 4K (45% lower than 1440p). The High preset shows 48.3 FPS at 1080p, 32.6 FPS at 1440p (33% lower), and 22.2 FPS at 4K (32% lower than 1440p). Ultra settings yield 44.0 FPS at 1080p, 28.4 FPS at 1440p (35% lower), and 18.9 FPS at 4K (33% lower than 1440p).

The consistent pattern — a 26-35% drop from 1080p to 1440p, followed by a 32-55% drop from 1440p to 4K — shows that 4K resolution demands more than double the pixel throughput of 1080p, and the RX 580's 42.88 GPixel/s pixel rate is insufficient. The limiting component is clearly the GPU at 1440p and above; the CPU's performance remains constant across resolutions, and if it were the bottleneck, frame rates would not scale this dramatically with resolution changes.

Measured FPS Breakdown

At 1920x1080, the full settings range is available. Low settings produce 81.6 FPS average, Medium 65.4 FPS, High 48.3 FPS, and Ultra 44.0 FPS. The difference between High and Ultra is only 4.3 FPS (9% slower), suggesting Ultra adds minimal visual benefit for a measurable performance cost. The 1080p results show that Medium is the last setting tier before FPS drops below 60.

At 2560x1440, Low settings achieve exactly 60.0 FPS. Medium drops to 45.6 FPS, High to 32.6 FPS, and Ultra to 28.4 FPS. The 1440p results show that only Low can maintain a 60 FPS experience, and even High falls below the 33.3 FPS threshold for 30 FPS playability (though it remains above 30 FPS). Ultra at 1440p dips to 28.4 FPS, which is below 30 FPS and noticeably stuttery for a stealth game requiring precise timing.

At 3840x2160, all settings are below playable thresholds. Low produces 37.1 FPS, Medium 25.3 FPS, High 22.2 FPS, and Ultra 18.9 FPS. The 4K results show a compressed range: the difference between Low and Ultra is 18.2 FPS (49% slower), which is proportionally smaller than at 1080p (46% slower from Low to Ultra). This compression suggests the GPU is fully saturated at 4K, and settings changes have diminishing returns.

CPU Role

The Intel Core i5-10400F brings 6 cores and 12 threads to this pairing, with a base clock of 2.90 GHz and boost clock of 4.30 GHz. Its 12 MB of shared L3 cache and dual-channel DDR4 memory support (42.7 GB/s bandwidth) provide adequate feeding for the RX 580 in Thief. The CPU's benchmark scores show strong multi-threaded capability: Cinebench R23 multicore scores 10297, Passmark multithread scores 12115, and 3DMark 16-thread scores 4748. Single-thread performance is also solid, with Cinebench R23 single-core at 1453 and Passmark single-thread at 2541.

In Thief, the CPU's role becomes evident when examining the frame rate consistency across settings at the same resolution. At 1080p, the FPS drops from 81.6 at Low to 44.0 at Ultra — a 46% reduction — which indicates the GPU is the primary limiter even at 1080p. If the CPU were the bottleneck, frame rates would remain similar regardless of graphic settings. The CPU's 73rd percentile ranking and its nearest rivals (all within 1.2% in average score) confirm that this processor is not holding back the system in Thief.

The CPU's 65 W TDP and Comet Lake architecture (14 nm process) make it an efficient choice, but its generation (released 2020-04-29) postdates Thief by six years, meaning the game cannot utilize newer instruction sets or threading models. The CPU's 3DMark single-thread score of 688 and Passmark find prime numbers score of 35 indicate modest per-core performance, which is more than sufficient for a 2014 game that was designed for quad-core CPUs. The data shows the i5-10400F is not the limiting component in this combo; the RX 580's 53rd GPU percentile is the weaker link.