Thief

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

The measured frame rates for Thief show a steep and consistent decline as resolution climbs, which points directly at the GPU as the primary bottleneck in this pairing. At 1080p Low, the combo produces 74.5 FPS, but stepping up to 1440p Low drops that to 53.2 FPS — a 21.3 FPS loss. Moving to 4K Low further collapses performance to 31.7 FPS, which is less than half of the 1080p Low result. This scaling pattern is classic GPU-bound behavior: the CPU has enough headroom to feed frames at lower resolutions, but the Radeon RX 570's pixel throughput gets overwhelmed as the pixel count quadruples from 1080p to 4K.

The same trend appears across every settings tier. At High settings, 1080p yields 41.2 FPS, 1440p yields 33 FPS, and 4K yields 18.8 FPS. The gap between 1440p and 4K is particularly punishing — a 14.2 FPS drop that suggests the GPU's 224.0 GB/s memory bandwidth and 32 ROPs are saturated when pushing 8.3 million pixels. At Ultra settings, the progression is 43.2 FPS at 1080p, 30.4 FPS at 1440p, and 15.9 FPS at 4K. The 4K Ultra result is barely above a slideshow, indicating that this combination is not viable at that resolution regardless of quality preset.

Interestingly, the drop from Low to Ultra at any given resolution is not uniform. At 1080p, Low (74.5 FPS) to Ultra (43.2 FPS) represents a 42% reduction, while at 4K, Low (31.7 FPS) to Ultra (15.9 FPS) is a 50% reduction. This widening gap at higher resolutions suggests that the RX 570's shading units — 2048 in total — are increasingly strained by the extra geometric and lighting work that Ultra settings demand, rather than the CPU becoming a limiting factor. The data implies that Thief's engine scales well with GPU resources, but this particular GPU simply lacks the raw throughput for high-resolution, high-detail play.

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

The AMD Ryzen 5 5600 brings six cores, twelve threads, and a boost clock of 4.40 GHz to this pairing. In a 2014 stealth title like Thief, which was designed for the quad-core era, this modern Zen 3 processor has substantial headroom. The CPU's single-thread performance — evidenced by a 3DMark single-thread score of 882 and a Cinebench R23 single-core score of 2584 — indicates that it can easily handle Thief's game logic, AI, and physics systems without becoming a constraint.

The benchmark data supports this assessment indirectly through the resolution scaling pattern. If the CPU were the bottleneck, we would expect frame rates to remain relatively flat as resolution increases, since the CPU's workload stays constant while the GPU's increases. Instead, FPS drops dramatically at every settings tier when moving from 1080p to 4K. For instance, at Medium settings, 1080p yields 56.8 FPS while 4K yields only 25.5 FPS — a 31.3 FPS difference. This is a hallmark of a system where the GPU is maxed out while the CPU waits idle.

The Ryzen 5 5600's 32 MB of shared L3 cache and 51.2 GB/s memory bandwidth provide ample data delivery for Thief's level streaming and texture access. The CPU's multi-threaded capabilities — a Cinebench R23 multi-core score of 18309 and a PassMark multi-thread score of 21541 — are far beyond what a game from 2014 can utilize. Thief likely uses only two to four threads effectively, and the 5600's 12 threads mean there is no risk of thread contention or scheduler overhead affecting frame pacing.

This CPU’s 79th percentile ranking among all tested processors (with an average benchmark score of 21765) places it comfortably ahead of the vast majority of CPUs. Its nearest rivals, such as the Intel Core i7-11700F (average score 21957, deltaPct -0.9%), have similar overall performance, but none of that CPU headroom translates into higher FPS here because the RX 570 is the limiting factor. The conclusion is clear: in Thief, the Ryzen 5 5600 is never the issue — it is waiting on the GPU at every resolution above 1080p Low.

FAQ

Q: Is this combo playable at 1080p with high settings?

A: Yes, the 1080p High preset produces an average of 41.2 FPS, which is playable for a stealth game where precise timing matters less than in fast-paced shooters. However, 1080p Ultra only reaches 43.2 FPS, suggesting that High is the practical ceiling for smooth gameplay.

Q: What resolution gives the best balance of visual quality and performance?

A: The data shows 1080p Medium at 56.8 FPS as the sweet spot. It offers a 15.6 FPS improvement over High while still providing better visual fidelity than Low, which runs at 74.5 FPS but with reduced detail.

Q: Can this combo handle 4K at any settings?

A: No. Even at 4K Low, the average FPS is only 31.7, and at 4K Ultra it drops to 15.9 FPS. The GPU's 4 GB of GDDR5 memory and 224.0 GB/s bandwidth are insufficient for 4K rendering in Thief.

Q: How does the Ryzen 5 5600 compare to its nearest rivals?

A: The Ryzen 5 5600 has an average benchmark score of 21765, which is 0.6% higher than the Intel Xeon D-1746TER (21635) and 0.6% lower than the AMD EPYC 9554P (21899). It sits within 0.9% of the Intel Core i7-11700F (21957).

Q: What is the RX 570's standing among GPUs?

A: The RX 570 ranks in the 74th percentile of all GPUs with an average benchmark score of 30158. Its nearest rival, the NVIDIA GeForce RTX 5060, scores 30109 (deltaPct 0.2%), showing that the RX 570 is competitive in synthetic benchmarks despite its age.

Q: Is the CPU or GPU more responsible for the FPS drops at higher resolutions?

A: The GPU. The FPS drops from 74.5 at 1080p Low to 31.7 at 4K Low — a 42.8 FPS decline — while the CPU's workload remains constant. This pattern indicates the RX 570's rendering pipeline is saturated, not the Ryzen 5 5600's processing capabilities.

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

At 1080p, the full range of settings shows a clear hierarchy. Low settings deliver the highest average at 74.5 FPS, followed by Medium at 56.8 FPS, Ultra at 43.2 FPS, and High at 41.2 FPS. Notably, Ultra outperforms High by 2 FPS, which is an anomaly in the data — possibly due to benchmark variance or an unusual optimization path in Thief's Ultra preset. The 18.3 FPS gap between High and Low suggests that the High preset imposes significant additional GPU load compared to the minimal geometric and shading work at Low.

Moving to 1440p, all settings take a substantial hit. Low drops to 53.2 FPS (a 21.3 FPS loss from 1080p), Medium drops to 40.4 FPS (a 16.4 FPS loss), High drops to 33 FPS (an 8.2 FPS loss), and Ultra drops to 30.4 FPS (a 12.8 FPS loss). The interesting detail here is that the High preset's loss is the smallest in absolute terms, which may indicate that High is already pushing the GPU close to its memory bandwidth limit at 1080p, so the additional pixel load at 1440p has less relative impact.

At 4K, the results become marginal. Low yields 31.7 FPS, Medium yields 25.5 FPS, High yields 18.8 FPS, and Ultra yields 15.9 FPS. The gap between Low and Medium at 4K is 6.2 FPS, while the gap between High and Ultra is only 2.9 FPS — suggesting that at these extreme resolutions, the GPU is so starved that settings differences have diminishing returns. The 4K Ultra result of 15.9 FPS is the lowest measured value in the entire dataset, confirming that this resolution is unusable for this combo.

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

The AMD Radeon RX 570 is built on the Polaris 20 chip with GCN 4.0 architecture, a 14 nm process, and 5,700 million transistors. Its base clock of 1168 MHz and boost clock of 1244 MHz, combined with 2048 shading units, yield a FP32 performance of 5.095 TFLOPS. The GPU's 4 GB of GDDR5 memory operates at 1750 MHz (7 Gbps effective) across a 256-bit bus, providing 224.0 GB/s of bandwidth. These specifications explain why the card performs adequately at 1080p but struggles at higher resolutions.

Thief, released in 2014, was built for GPUs of its era — typically 2 GB cards. The RX 570's 4 GB VRAM is theoretically sufficient for 1080p and 1440p textures, but the 224.0 GB/s bandwidth becomes a limiting factor as resolution increases. At 4K, the GPU must move four times as many pixels, and the memory subsystem cannot keep up. The pixel rate of 39.81 GPixel/s and texture rate of 159.2 GTexel/s are simply inadequate for 4K workloads, even at Low settings where the 31.7 FPS result indicates the GPU is still working near its limits.

The RX 570's 74th percentile ranking among all GPUs (average benchmark score 30158) is surprisingly high for a card from 2017, but it sits close to modern cards like the NVIDIA GeForce RTX 5060 (score 30109, deltaPct 0.2%) and the AMD Radeon RX 7700 XT (score 30097, deltaPct 0.2%). This suggests that in synthetic benchmarks, the RX 570 holds its own, but in Thief's real-world rendering, its age shows — particularly in the 4K results where modern GPUs would likely maintain 60+ FPS. The GPU's 32 ROPs and 128 TMUs are the likely culprits for the 4K collapse, as these fixed-function units handle pixel output and texture filtering, respectively.

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

For a playable experience, the data points to 1080p Medium as the optimal preset. At 56.8 FPS, it provides a smooth frame rate that is 15.6 FPS higher than High and 13.6 FPS higher than Ultra, while still offering better visual quality than Low's 74.5 FPS. The trade-off is clear: Medium sacrifices some shadow quality and texture detail compared to High, but the 15.6 FPS gain is significant for maintaining consistent frame pacing in a stealth game where camera movement needs to be fluid.

If visual fidelity is the priority, 1080p Ultra at 43.2 FPS is the highest quality setting that remains playable, though it is only 2 FPS faster than High at 41.2 FPS. This is an odd result — Ultra is typically more demanding than High, but the data shows nearly identical performance. Players might choose Ultra for the extra effects without worrying about a performance penalty. However, 1080p High is not recommended because it offers no advantage over Ultra and only 1.9 FPS more than the lower-quality preset.

At 1440p, the only viable option is Low at 53.2 FPS, which is playable but lacks visual richness. Medium at 40.4 FPS is borderline, and High at 33 FPS and Ultra at 30.4 FPS are too choppy for comfortable play. At 4K, no preset is playable — even Low at 31.7 FPS is below the 30 FPS threshold for some, and it is certainly not smooth enough for a game requiring stealth and precision. The recommendation is to stay at 1080p, with Medium as the default and Ultra as a visual showcase preset.

How This Combo Ranks — use comboRankInGame vs other tested combos

The AMD Ryzen 5 5600 + AMD Radeon RX 570 combination ranks 1549 out of 1642 tested combos in Thief, placing it in the bottom 6% of all systems tested. This low ranking is almost entirely attributable to the GPU's limitations at higher resolutions, as the CPU's performance is well above average. The combo's rank reflects the fact that Thief's benchmark results are heavily weighted toward GPU throughput, and the RX 570's 4 GB VRAM and 224.0 GB/s bandwidth are insufficient for modern high-resolution gaming.

This rank of 1549 out of 1642 means that 93 other combos performed worse, but the vast majority of systems tested — 1548 of them — delivered higher average FPS across the measured settings. The data suggests that this combo is best suited for 1080p gaming, where it can achieve competitive frame rates, but it is outclassed by almost every other combination at 1440p and 4K. The 74th percentile GPU ranking and 79th percentile CPU ranking highlight a mismatch: a relatively strong CPU paired with a GPU that is only mid-tier, resulting in a combo that underperforms its individual component rankings.

The practical implication is that users of this combo should treat it as a 1080p-oriented system. The Ryzen 5 5600 has enough headroom to support a GPU upgrade in the future, but as configured, the RX 570 holds back the entire system in Thief. The rank of 1549 is a warning that this combo will struggle with any modern game that demands high resolutions or detailed settings, but for 1080p Medium play, it remains a functional, if unremarkable, pairing.