Thief

How This Combo Ranks

The AMD Ryzen 5 8400F paired with the AMD Radeon RX 7900 XT lands at rank 270 out of 1642 tested combos in Thief. That places this configuration in the top 16.4% of all recorded pairings, which is a strong showing for a game originally released in early 2014. The combo outperforms the vast majority of tested systems, though it does not crack the top 250. The rank reflects a pairing where the GPU's raw throughput is the dominant factor, but the CPU's 6-core, 12-thread Zen 4 architecture ensures it never becomes a bottleneck at the resolutions tested.

In terms of component-level standing, the CPU sits at the 82nd percentile among all processors, with an average benchmark score of 25064. Its nearest rival, the AMD Ryzen 7 2700X, scores 25057, a delta of 0%. The Ryzen AI 5 PRO 340 is 0.1% behind, and the EPYC 9474F is 0.2% behind, while the Ryzen 5 7500F is 0.3% ahead. These are essentially statistical ties, meaning the 8400F delivers performance squarely in that tier. The GPU also holds the 82nd percentile among all graphics cards, with an average score of 38358. Its closest rival, the NVIDIA GeForce RTX 5080 Mobile, matches at 38349 (0% delta), while the NVIDIA CMP 70HX is 0.3% ahead and the MX570 is 0.4% behind.

The combination of a top-quartile CPU and top-quartile GPU produces a balanced system. In Thief, the measured frame rates confirm that neither component is severely overmatched. The rank of 270 suggests that while many combos with faster CPUs or GPUs exist, this pairing delivers a smooth experience across all tested settings, making it a reliable choice for this title.

FAQ

Q: How does this combo rank among all tested in Thief?

A: It ranks 270th out of 1642 tested combos, placing it in the top 16.4% of all systems.

Q: What is the CPU's standing relative to its nearest rivals?

A: The Ryzen 5 8400F scores 25064 on average, statistically tied with the Ryzen 7 2700X (25057, 0% delta) and 0.1% ahead of the Ryzen AI 5 PRO 340 (25099).

Q: What is the GPU's standing relative to its nearest rivals?

A: The RX 7900 XT scores 38358 on average, matching the RTX 5080 Mobile (38349, 0% delta) and trailing the CMP 70HX by 0.3% (38225).

Q: What is the best 4K result in Thief?

A: At 3840x2160 with Low settings, the combo achieves 111.5 FPS average; at Ultra, it drops to 60.4 FPS.

Q: Is the CPU or GPU the limiting factor at 1080p?

A: At 1920x1080, the gap between Low (180 FPS) and Ultra (143.4 FPS) is 36.6 FPS, indicating the GPU handles most of the load, with the CPU providing sufficient headroom.

Q: What is the fastest measured setting at any resolution?

A: The highest average FPS is 180 at 1920x1080 with Low settings, which is also the only result at or above 180 FPS across all tested configurations.

GPU Role

The AMD Radeon RX 7900 XT is the primary driver of frame rates in Thief, given the game's age and the CPU's ample single-thread performance. The GPU features 20 GB of GDDR6 memory on a 320-bit bus, delivering 800.0 GB/s of bandwidth. This memory configuration is far beyond what Thief requires, even at 4K Ultra, where the GPU still manages 60.4 FPS. The 20 GB capacity ensures that texture streaming and high-resolution assets never cause stutter or memory-related dips, even in the most demanding scenes.

Clock speeds are substantial: a base of 1387 MHz, a game clock of 2025 MHz, and a boost of 2394 MHz. The memory runs at 2500 MHz with 20 Gbps effective. These clocks, combined with 5376 shading units and 84 RT cores, give the GPU a theoretical FP32 throughput of 51.48 TFLOPS. In a 2014 title like Thief, this raw power translates into very high frame rates at all settings, with the GPU rarely breaking a sweat. The pixel rate of 459.6 GPixel/s and texture rate of 804.4 GTexel/s further support high-resolution rendering.

The GPU's benchmark scores reinforce its position. Its PassMark G3D score is 29009, and its 3DMark Steel Nomad DX12 score is 5623. These numbers place it at the 82nd percentile, matching the performance tier of the RTX 5080 Mobile. In Thief, the data shows the GPU scaling predictably with resolution and settings, meaning the VRAM and bandwidth are more than sufficient, and the limiting factor shifts to the rendering load as resolution increases.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates. Low settings produce 180 FPS average, which is the maximum recorded across all tests. Medium drops to 162 FPS, High to 147.4 FPS, and Ultra to 143.4 FPS. The spread from Low to Ultra is 36.6 FPS, a relatively narrow range that indicates the GPU is not bottlenecked at this resolution; even the heaviest preset stays well above 140 FPS.

Moving to 2560x1440, frame rates remain strong but show a clearer separation. Low averages 162.3 FPS, Medium 142.1 FPS, High 109.4 FPS, and Ultra 103.5 FPS. The drop from Low to Ultra is 58.8 FPS, more pronounced than at 1080p. The High and Ultra presets both stay above 100 FPS, ensuring a smooth experience on high-refresh-rate 1440p monitors.

At 3840x2160, the GPU begins to feel the load. Low averages 111.5 FPS, Medium 86.6 FPS, High 63.9 FPS, and Ultra 60.4 FPS. The Ultra result is just above the 60 FPS threshold, while High is slightly above it at 63.9 FPS. Low and Medium remain playable but require a VRR display for optimal smoothness. The transition from 1080p to 4K shows a consistent reduction in frame rates across all settings, with the heaviest presets suffering the most.

Resolution Scaling

The scaling from 1080p to 4K reveals how the GPU becomes the limiting component as pixel count rises. At Low settings, the average FPS drops from 180 at 1080p to 162.3 at 1440p (a 9.8% reduction) and then to 111.5 at 4K (a 38.1% reduction from 1080p). The 1440p to 4K drop is 31.3%, indicating that the GPU's fill rate and bandwidth are increasingly taxed.

At Ultra settings, the pattern is similar but with a smaller absolute drop. From 143.4 FPS at 1080p to 103.5 FPS at 1440p (a 27.8% reduction) and then to 60.4 FPS at 4K (a 57.9% reduction from 1080p). The 4K Ultra result is less than half the 1080p Ultra figure, showing that the 20 GB VRAM and 800 GB/s bandwidth are sufficient, but the GPU's compute throughput is the ceiling.

The data suggests the CPU is not a limiting factor at any resolution. At 1080p Low, the combo hits 180 FPS, which is likely near the game's engine cap or the GPU's maximum output. The consistent frame rates across 1080p and 1440p for lighter settings indicate that the Ryzen 5 8400F's 6 cores and 12 threads, with a boost clock of 4.70 GHz, provide enough headroom. The limiting component shifts fully to the GPU at 4K, where the RX 7900 XT's 51.48 TFLOPS of FP32 performance determines the outcome.

Settings Recommendations

For the best experience per the measured rows, the Ultra preset at 1920x1080 is the clear choice, delivering 143.4 FPS average. This provides the highest visual fidelity while maintaining a frame rate that exceeds most 1440p monitors' refresh rates. At 1440p, High at 109.4 FPS offers a strong balance, keeping the experience above 100 FPS without sacrificing much visual quality. Ultra at 1440p drops to 103.5 FPS, which is still playable but offers diminishing returns over High.

For 4K gaming, the data indicates that High at 63.9 FPS is the optimal preset for maintaining smoothness, as it stays above 60 FPS. Ultra at 60.4 FPS is technically playable but leaves no headroom for demanding scenes. Medium at 86.6 FPS is the best option for those who prefer a higher frame rate over maximum quality, as it provides a significant boost over High with only a modest visual reduction. Low at 111.5 FPS is recommended only for competitive play or if frame rate is the absolute priority, as the visual downgrade is substantial.

Overall, the combo is best utilized at 1080p Ultra or 1440p High, where it delivers a premium experience. At 4K, users should stick to High or Medium to maintain consistent performance, as the GPU's 20 GB VRAM does not compensate for the compute load at Ultra settings. The measured data shows that the RX 7900 XT is well-matched to the Ryzen 5 8400F, with no single setting causing a disproportionate drop that would indicate a bottleneck.