Thief

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

The AMD Ryzen 5 3600 is a 6-core, 12-thread processor built on the Zen 2 architecture (Matisse codename) using a 7 nm process. It operates with a base clock of 3.60 GHz and a boost clock of 4.20 GHz, drawing a 65 W TDP. The CPU features 64 KB of L1 cache per core, 512 KB of L2 cache per core, and a shared 32 MB L3 cache. Memory support is dual-channel DDR4 with a theoretical bandwidth of 51.2 GB/s. This processor was released in 2019 and has a launch MSRP of $199.

In synthetic benchmarks, the Ryzen 5 3600 demonstrates strong multi-threaded capability relative to its single-thread performance. Its Cinebench R23 multi-core score is 15045, while the single-core score is 2124. The gap between multi-core and single-core results reflects the scaling efficiency of the 12 threads. In 3DMark, the processor scores 4605 with 16 threads, 3844 with 8 threads, 2579 with 4 threads, and 1361 with 2 threads. The single-thread 3DMark score is 696, which is notably lower relative to the multi-threaded results, suggesting that the processor's architectural efficiency in lightly-threaded workloads is a limiting factor.

For Thief, a 2014 stealth title, the game's engine likely relies on a mix of CPU-bound simulation and GPU-bound rendering. The Ryzen 5 3600's 6 cores and 12 threads provide ample parallelism for the game's AI, physics, and world-streaming systems. However, the relatively modest single-thread performance—evidenced by the 3DMark single-thread score of 696 and PassMark single-thread score of 2562—may constrain frame rates in scenarios where the game's logic is not fully parallelized. The processor's 32 MB shared L3 cache helps mitigate memory latency, which is beneficial for the game's data-heavy level geometry and texture streaming.

The CPU's percentile rank among all processors is 76, meaning it outperforms 76% of CPUs in the benchmark database. Its average benchmark score is 18129, placing it in direct competition with the Intel Core i5-11400 (avg score 18150, deltaPct -0.1), the AMD Ryzen 5 7535HS (avg score 18101, deltaPct 0.2), and the AMD Ryzen 5 1600 (avg score 18158, deltaPct -0.2). These rivals are within 0.3% of the Ryzen 5 3600's average score, indicating that the processor sits in a tightly contested performance tier. The data suggests that the CPU's role in Thief will be to provide consistent frame pacing without becoming the primary bottleneck at lower resolutions, where the GPU has more headroom.

How This Combo Ranks

The combination of the AMD Ryzen 5 3600 and the NVIDIA GeForce RTX 4090 ranks 739th out of 1642 tested combos in Thief, placing it in the 45th percentile of all tested system configurations. This ranking is notable because the RTX 4090 is an exceptionally powerful GPU, but the overall combo rank is dragged down by the mid-range CPU. The data indicates that the processor is not fully leveraging the GPU's capabilities in this game, resulting in a combo rank that sits below the median of all tested pairings.

The RTX 4090, as a standalone component, ranks in the 91st percentile among all GPUs, with an average benchmark score of 66473. Its nearest rivals include the NVIDIA Tesla T4 (avg score 66733, deltaPct -0.4), the NVIDIA Tesla P40 (avg score 66127, deltaPct 0.5), the AMD Radeon Pro Vega 56 (avg score 67097, deltaPct -0.9), and the NVIDIA Quadro P6000 (avg score 67320, deltaPct -1.3). These rivals are all within 1.3% of the RTX 4090's average score, but they are workstation-oriented cards, not gaming-focused. The sheer compute power of the RTX 4090—82.58 TFLOPS FP32 and a PassMark G3D score of 38194—suggests it should dominate most gaming workloads.

However, the combo rank of 739 out of 1642 reveals that pairing a top-tier GPU with a mid-range CPU creates a significant imbalance. The data implies that the Ryzen 5 3600's single-thread performance (3DMark single-thread score of 696) and its overall compute throughput (Cinebench R23 multi-core score of 15045) are insufficient to feed the RTX 4090's rendering pipeline in Thief. The combo's rank is a direct reflection of this bottleneck, as the GPU is likely waiting on the CPU to deliver draw calls and game state updates. Benchmarks show that the RTX 4090's PassMark DirectX 11 score is 326 and DirectX 12 score is 150, indicating that the GPU's raw rasterization capabilities are far ahead of what the CPU can supply in frame-to-frame workloads.

Resolution Scaling

The measured FPS data for this combo in Thief reveals a clear pattern of resolution-dependent scaling. At 1080p, the average frame rates range from 98.8 FPS (Ultra) to 127 FPS (Low). Moving to 1440p, the average frame rates drop to between 88.1 FPS (Ultra) and 113.5 FPS (Low). At 4K, the average frame rates fall further to between 75.4 FPS (Ultra) and 93.3 FPS (Low). Across all settings, the drop from 1080p to 4K is consistent: High settings drop from 105.9 FPS to 76.7 FPS (a 27.6% reduction), Medium settings drop from 112.1 FPS to 81.4 FPS (a 27.4% reduction), Low settings drop from 127 FPS to 93.3 FPS (a 26.5% reduction), and Ultra settings drop from 98.8 FPS to 75.4 FPS (a 23.7% reduction).

These scaling patterns indicate that the limiting component shifts depending on resolution. At 1080p, the average frame rates are relatively high, but they do not reach the levels one would expect from an RTX 4090 alone, suggesting that the CPU is the primary constraint. The fact that Low settings at 1080p only reach 127 FPS—rather than exceeding 200 FPS—points to a CPU-bound scenario where the Ryzen 5 3600's single-thread performance (3DMark single-thread score of 696) limits the frame rate. As resolution increases to 1440p and 4K, the GPU becomes more heavily loaded, and the frame rate drops accordingly. The similar percentage drops across all settings at each resolution step indicate that the GPU is scaling predictably with pixel count, but the absolute FPS values remain lower than the GPU's compute capabilities would suggest.

The data shows that at 4K, the frame rates are still respectable (75.4 to 93.3 FPS), but they are not indicative of the RTX 4090's full potential. The GPU's 24 GB of GDDR6X memory and 1.01 TB/s bandwidth are more than sufficient for 4K textures, so the limiting factor at 4K is likely the CPU's ability to issue draw calls and process game logic in real-time. The consistent drop of roughly 25-28% from 1080p to 4K across all settings confirms that the bottleneck is evenly distributed, but the absolute frame rates remain CPU-capped.

Measured FPS Breakdown

At 1920x1080 resolution, the combo delivers an average of 127 FPS on Low settings, 112.1 FPS on Medium, 105.9 FPS on High, and 98.8 FPS on Ultra. The spread between Low and Ultra is 28.2 FPS, representing a 22.2% performance penalty for enabling the highest settings. This indicates that the game's visual effects at Ultra settings (likely including shadows, ambient occlusion, and post-processing) have a measurable impact on the CPU and GPU, but the frame rates remain playable.

At 2560x1440 resolution, the average frame rates are 113.5 FPS on Low, 98.4 FPS on Medium, 91.4 FPS on High, and 88.1 FPS on Ultra. The drop from 1080p to 1440p is consistent across settings: Low drops by 13.5 FPS (10.6%), Medium drops by 13.7 FPS (12.2%), High drops by 14.5 FPS (13.7%), and Ultra drops by 10.7 FPS (10.8%). These reductions are proportional to the pixel count increase, indicating that the GPU is scaling as expected with resolution.

At 3840x2160 resolution, the average frame rates are 93.3 FPS on Low, 81.4 FPS on Medium, 76.7 FPS on High, and 75.4 FPS on Ultra. The transition from 1440p to 4K results in a more significant drop: Low falls by 20.2 FPS (17.8%), Medium falls by 17 FPS (17.3%), High falls by 14.7 FPS (16.1%), and Ultra falls by 12.7 FPS (14.4%). This suggests that at 4K, the GPU is approaching its limits for this game, though the frame rates remain above 75 FPS even at Ultra settings.

The data reveals an interesting pattern: the performance gap between Low and Ultra settings narrows as resolution increases. At 1080p, the gap is 28.2 FPS (127 vs. 98.8), while at 4K, the gap is 17.9 FPS (93.3 vs. 75.4). This indicates that at lower resolutions, the CPU is the primary bottleneck, and the settings impact is amplified by the CPU's limited frame production. At higher resolutions, the GPU becomes more dominant, and the settings impact is reduced because the GPU is already heavily loaded.

GPU Role

The NVIDIA GeForce RTX 4090 is the flagship of the GeForce 40-series, built on the Ada Lovelace architecture using a 5 nm process at TSMC. It features 16384 shading units, 512 TMUs, and 176 ROPs, along with 128 RT cores and 512 tensor cores. The GPU operates at a base clock of 2235 MHz and a boost clock of 2520 MHz, with memory clocked at 1313 MHz (21 Gbps effective). The 24 GB of GDDR6X memory is accessed via a 384-bit bus, delivering a bandwidth of 1.01 TB/s. The card has a TDP of 450 W and requires an 850 W PSU, with a triple-slot cooler and a 16-pin power connector. Its launch MSRP was 1,599 USD.

In Thief, the GPU's role is heavily constrained by the CPU. The RTX 4090's raw compute capabilities—82.58 TFLOPS FP32, 1,290.2 GTexel/s texture rate, and 443.5 GPixel/s pixel rate—are more than sufficient to handle the game's 2014-era graphics at any resolution. The GPU's PassMark G3D score of 38194 and Geekbench OpenCL score of 317684 demonstrate its dominance in compute tasks. However, the measured FPS data shows that the GPU is not being fully utilized, particularly at 1080p where the frame rates are capped below 130 FPS.

The GPU's 24 GB VRAM capacity is far beyond what Thief requires, even at 4K Ultra settings. The 1.01 TB/s memory bandwidth ensures that texture streaming and frame buffer operations are not bottlenecks. The data suggests that the GPU is operating in a state of underutilization at 1080p, where the CPU's frame production limit prevents the GPU from reaching its full potential. At 4K, the GPU is more balanced with the CPU, but the frame rates still indicate that the CPU is the limiting factor, as the RTX 4090 should theoretically exceed 100 FPS in a 2014 title even at 4K.

The GPU's percentile rank of 91 among all GPUs, combined with its average benchmark score of 66473, places it in the top tier of graphics cards. However, the combo rank of 739 out of 1642 in Thief reveals that the GPU's capabilities are not fully realized when paired with the Ryzen 5 3600. The data implies that a more powerful CPU would unlock higher frame rates, particularly at 1080p and 1440p, where the GPU is waiting on the processor. At 4K, the GPU is more engaged, but the frame rates still do not reflect the RTX 4090's full performance envelope, suggesting that the CPU remains a persistent bottleneck across all tested settings.