Thief

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data for Thief reveals a surprisingly modest performance penalty as resolution climbs, which is a strong signal about where the bottleneck lies in this pairing. At Low settings, the frame rate drops from 165.2 FPS at 1920x1080 to 144.5 FPS at 2560x1440, a decline of roughly 12.5%. Pushing further to 3840x2160 yields 122.8 FPS, which is still 74.3% of the 1080p figure. This is a gentle scaling curve for a game from 2014, and it indicates that the NVIDIA GeForce RTX 5090 is not being pushed anywhere near its limits at lower resolutions.

The story becomes more interesting when examining the Ultra preset. At 1920x1080, the combo produces 130.7 FPS. At 2560x1440, that drops to 115.2 FPS, and at 3840x2160 it falls to 81.7 FPS. The 4K figure represents a 37.5% reduction from 1080p Ultra, which is a steeper drop than what Low settings show. This suggests that as graphical complexity increases, the GPU begins to matter more, yet even at 4K Ultra the frame rate remains well above 60 FPS. The data implies that at 1080p and 1440p, the AMD Ryzen 5 5600GT is likely the primary constraint, particularly in scenes with heavy CPU logic.

The delta between Low and Ultra at each resolution is also telling. At 1080p, the spread is 34.5 FPS (165.2 down to 130.7). At 1440p, the spread narrows to 29.3 FPS (144.5 down to 115.2). At 4K, the spread expands again to 41.1 FPS (122.8 down to 81.7). This non-linear behavior points to a system where the CPU holds back performance at lower resolutions, while the GPU becomes more dominant as pixel count rises. The RTX 5090's 32 GB of GDDR7 memory and 512-bit bus are clearly not bandwidth-limited in this title, as even the most demanding 4K preset stays comfortably playable.

Settings Recommendations — which preset gives the best experience per the measured rows

For players targeting 60 FPS as a baseline, every measured preset at every resolution exceeds that threshold, so the choice comes down to visual fidelity versus headroom. At 3840x2160, the Ultra preset delivers 81.7 FPS, which is only 3.5 FPS below the High preset's 85.2 FPS. The gap between Ultra and High at 4K is remarkably small, suggesting that the incremental visual gains from Ultra come at a negligible performance cost. The Medium preset at 4K offers 111.1 FPS, a 36% improvement over Ultra, which could be attractive for players with high-refresh-rate 4K displays.

At 2560x1440, the High preset achieves 118.6 FPS, while Ultra manages 115.2 FPS. The difference of 3.4 FPS is within the noise of typical benchmark variance, making Ultra the logical choice for 1440p owners who want maximum quality without sacrificing smoothness. The Medium preset at 1440p produces 128.7 FPS, which is 11.7% faster than High, but the visual downgrade may not justify that gain for most users.

The 1920x1080 results show a similar pattern, with High at 137.7 FPS and Ultra at 130.7 FPS. The 7 FPS difference between these two presets is barely perceptible, so Ultra is recommended for 1080p. The Low preset at 1080p hits 165.2 FPS, which is useful for competitive play, but Thief is a stealth game that rewards atmosphere over twitch reactions, so the visual richness of Ultra is more valuable here. The data supports Ultra as the default recommendation at all three resolutions, with Medium as a fallback for 4K users who want extra headroom.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 5 5600GT brings 6 cores and 12 threads to this pairing, with a base clock of 3.60 GHz and a boost clock of 4.60 GHz. This is a Zen 3 architecture part built on TSMC's 7 nm process, and its benchmark scores place it in the 78th percentile among all CPUs. The single-thread performance, as measured by Cinebench R23 at 2438, is solid for a game released in 2014, which likely relies on a few heavily optimized threads rather than massive parallelism.

The CPU's 16 MB of L3 cache and 51.2 GB/s memory bandwidth are modest by modern standards, but they appear sufficient for Thief's engine. The data shows that at 1080p Low, the combo reaches 165.2 FPS, which is likely near the CPU's ceiling for this game. The fact that 1440p Low only drops to 144.5 FPS, a 12.5% reduction, suggests the CPU is still the limiting factor at that resolution. Even at 4K Low, the 122.8 FPS figure implies the CPU is keeping up with the GPU's output.

The 3DMark scores provide context: the 16-thread test scores 5523, while the single-thread test scores 913. This indicates decent multi-threaded scaling, but Thief's age means it likely doesn't utilize all 12 threads effectively. The PassMark physics score of 875 and the Cinebench R15 multicore score of 1740 are more relevant to gaming workloads. The CPU's nearest rival, the Intel Core i7-10700, has an identical average benchmark score of 20746 with a deltaPct of 0, confirming that this processor is positioned competitively for its generation.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combination of the AMD Ryzen 5 5600GT with the NVIDIA GeForce RTX 5090 ranks 245 out of 1642 tested combos in Thief, placing it in the top 15% of all pairings in the database. This is a strong showing, especially considering the CPU is a budget-oriented part while the GPU is a flagship. The rank suggests that the RTX 5090's raw power is compensating for the CPU's limitations, but there is likely headroom for improvement with a faster processor.

The fact that this combo outperforms roughly 85% of all tested configurations is notable given the CPU's 78th percentile standing among all CPUs and the GPU's 94th percentile among all GPUs. If the pairing were perfectly balanced, one might expect a rank closer to the geometric mean of those percentiles, but the actual rank of 245 out of 1642 indicates the GPU is doing more heavy lifting than the CPU. This is consistent with the resolution scaling data, which shows the CPU becoming a bottleneck at lower resolutions.

For context, the RTX 5090's nearest rival, the RTX 5090 D, has an average score of 84241 with a deltaPct of 0.1, meaning the two GPUs are virtually identical. The CPU's nearest rival, the Intel Core i7-10700, matches the Ryzen 5 5600GT exactly at 20746. This means swapping either component for its nearest rival would likely produce nearly identical results in Thief, reinforcing that the current combo's rank is more dependent on the GPU than the CPU.

FAQ

Q: Can this combo maintain 60 FPS at 4K Ultra in Thief?

A: Yes, the measured average FPS at 3840x2160 with Ultra settings is 81.7, which is 36% above the 60 FPS threshold.

Q: How much performance is lost when going from 1080p to 4K at High settings?

A: The frame rate drops from 137.7 FPS at 1920x1080 to 118.6 FPS at 2560x1440, and then to 85.2 FPS at 3840x2160. The total reduction from 1080p to 4K is 38.1%.

Q: Is the CPU or GPU the limiting factor in this game?

A: At 1080p and 1440p, the data suggests the CPU is the primary constraint, as frame rates vary little with resolution. At 4K, the GPU becomes more relevant, but the RTX 5090 still delivers high frame rates.

Q: What is the best preset for 1440p gaming?

A: Ultra at 2560x1440 delivers 115.2 FPS, which is only 3.4 FPS slower than High at 118.6 FPS. Given the minimal difference, Ultra is the recommended choice.

Q: How does this combo rank compared to other tested configurations?

A: It ranks 245 out of 1642 combos, placing it in the top 15% of all tested pairings for Thief.

Q: Is the RTX 5090's 32 GB VRAM beneficial for this game?

A: Thief is a 2014 title unlikely to use even a fraction of 32 GB, but the GPU's high memory bandwidth of 1.79 TB/s ensures no bandwidth-related bottlenecks at any resolution or preset.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

At 1920x1080, the measured average FPS values are as follows: Low settings produce 165.2 FPS, Medium delivers 147.2 FPS, High achieves 137.7 FPS, and Ultra reaches 130.7 FPS. The step from Low to Medium is a 10.9% reduction, while the step from Medium to High is 6.5%, and from High to Ultra is 5.1%. The diminishing performance cost of higher presets is evident, making Ultra a relatively cheap upgrade over High.

Moving to 2560x1440, the values are: Low at 144.5 FPS, Medium at 128.7 FPS, High at 118.6 FPS, and Ultra at 115.2 FPS. The gap between High and Ultra narrows to just 2.9% at this resolution, compared to 5.1% at 1080p. This suggests that the Ultra preset's additional effects are less demanding relative to the overall workload at higher resolutions.

At 3840x2160, the figures are: Low at 122.8 FPS, Medium at 111.1 FPS, High at 85.2 FPS, and Ultra at 81.7 FPS. The drop from Medium to High is a substantial 21.6%, while the drop from High to Ultra is only 4.1%. This indicates that the High preset introduces a significant rendering cost at 4K, likely related to shadow or texture quality settings that scale heavily with pixel count. The Ultra preset adds relatively little on top of High, making High the least efficient choice at 4K in terms of performance per visual gain.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce RTX 5090 is a Blackwell 2.0 architecture GPU built on TSMC's 5 nm process, with a base clock of 2017 MHz and a boost clock of 2407 MHz. Its 32 GB of GDDR7 memory on a 512-bit bus provides 1.79 TB/s of bandwidth, which is far beyond what Thief's 2014 engine can utilize. The GPU's 21760 shading units and 176 ROPs ensure that even the most demanding pixel workloads are handled with ease, as evidenced by the 4K Ultra result of 81.7 FPS.

The GPU's PassMark G3D score of 39650 places it in the 94th percentile among all GPUs, and its average benchmark score of 84306 is nearly four times higher than the CPU's average of 20740. This disparity explains why the GPU is not the limiting factor in most scenarios. The DirectX 11 PassMark score of 341 is particularly relevant for Thief, which predates DirectX 12, and it confirms that the GPU excels at legacy API workloads.

The RTX 5090's nearest rival, the RTX 5090 D, scores 84241 with a deltaPct of 0.1, meaning the two are effectively interchangeable. The AMD Radeon PRO W6600, with an average score of 83209 and a deltaPct of 1.3, is 1.3% slower, but still in the same performance class. This indicates that the RTX 5090's dominance in Thief is not unique to this specific card but rather a characteristic of this performance tier. The GPU's high clock speeds and massive memory bandwidth ensure that it scales well even at 4K, where the CPU's influence wanes and the GPU's raw throughput becomes the determining factor.