Thief

The Intel Core i5-9400 paired with the AMD Radeon RX 7900 XTX ranks 885th out of 1,642 tested combinations for Thief. This places the combo slightly below the median of all tested systems, a somewhat surprising result given the caliber of the graphics card involved. The ranking suggests that the system is not achieving its full potential in this title, with the CPU likely serving as a bottleneck that prevents the GPU from delivering top-tier performance. While the frame rates are perfectly playable, the overall standing indicates that this pairing is not optimized for maximizing Thief's engine capabilities.

How This Combo Ranks

The combo's rank of 885 out of 1,642 places it in the 46th percentile of all tested configurations. This is a middling result that reflects a fundamental imbalance between the two core components. The GPU alone sits in the 85th percentile when compared against all other graphics cards in our database, yet the combined system performance does not reflect this high standing. The data shows a clear disconnect: a top-tier graphics processor being held back by a mid-range processor from an earlier generation. The i5-9400's average benchmark score of 2,305 places it in the 50th percentile of all CPUs, which is a stark contrast to the GPU's 85th percentile ranking. This 35-point gap in percentile rankings is the primary reason the combo falls to the middle of the pack, as the CPU's relative weakness prevents the system from climbing higher in the rankings.

GPU Role

The AMD Radeon RX 7900 XTX brings substantial resources to bear on Thief, with 24 GB of GDDR6 memory on a 384-bit bus delivering 960.0 GB/s of bandwidth. The GPU's boost clock of 2,498 MHz and game clock of 2,365 MHz provide ample processing speed for this 2014 title. The card's 6,144 shading units and 192 ROPs give it the raw throughput to handle even the most demanding scenes at high resolutions. In our measured results, the GPU demonstrates its capability by pushing average frame rates above 60 FPS at 4K resolution on the High preset, a feat that many lesser cards cannot accomplish. The 24 GB frame buffer is far more than Thief requires, meaning memory capacity is never a limiting factor in these tests. Instead, the GPU operates well within its comfort zone, with the primary constraint on performance coming from the CPU feeding it data.

Resolution Scaling

The frame rate scaling across resolutions reveals a classic CPU-bound scenario. At 1080p with High settings, the system produces 99.9 FPS, which increases to 122.2 FPS on Low settings. Moving to 1440p, the High preset yields 87.2 FPS, while 4K High drops to 67.8 FPS. The critical observation is the relatively small performance delta between 1080p and 1440p, which indicates that the CPU is struggling to keep up at lower resolutions. If the GPU were the limiting factor, the frame rate drop from 1080p to 1440p would be more pronounced. Instead, the 12.7 FPS difference between 1080p High and 1440p High suggests the processor is maxing out its capability. The scaling from 1440p to 4K shows a more expected GPU-bound pattern, with a 19.4 FPS drop as pixel count increases dramatically. This pattern confirms that while the GPU has headroom at lower resolutions, the CPU becomes the constraining element.

Settings Recommendations

Based on the measured data, the Medium preset offers the best balance of visual quality and performance across all resolutions. At 1080p, Medium delivers 108.5 FPS, which is 14.7 FPS faster than High settings and only 13.7 FPS slower than Low. This provides a significant visual upgrade over Low with a minimal frame rate penalty. At 1440p, Medium achieves 96 FPS, comfortably above the 60 FPS threshold for smooth gameplay, while High drops to 87.2 FPS. The Ultra preset at 1440p produces 82.8 FPS, which is still playable but represents diminishing returns for the additional graphical load. At 4K, Medium maintains 81.1 FPS, which is the highest setting that stays above 80 FPS at this resolution. High at 4K drops to 67.8 FPS, which is acceptable but leaves less headroom for demanding scenes. The data clearly indicates that Medium is the sweet spot, offering the best visual fidelity per frame rate cost.

Measured FPS Breakdown

At 1920x1080, the system produces its highest frame rates. Low settings yield 122.2 FPS average, which is the peak performance measured in the entire dataset. Medium settings follow at 108.5 FPS, showing a 13.7 FPS penalty for the increased visual detail. High settings achieve 99.9 FPS, 22.3 FPS below the Low preset. Ultra settings deliver 93.8 FPS, representing the most demanding configuration at this resolution but still maintaining a highly playable frame rate.

Moving to 2560x1440, the frame rates remain robust. Low settings produce 106.2 FPS, a 16 FPS drop from the equivalent 1080p preset. Medium settings achieve 96 FPS, exactly 12.5 FPS lower than the 1080p Medium result. High settings deliver 87.2 FPS, and Ultra settings round out the resolution at 82.8 FPS. The performance degradation from 1080p to 1440p averages around 13-15 FPS across all settings, indicating a consistent scaling pattern.

At 3840x2160, the GPU begins to feel the load more significantly. Low settings still manage 89 FPS, which is a 33.2 FPS drop from the 1080p Low result. Medium settings achieve 81.1 FPS, maintaining playability at the highest resolution. High settings drop to 67.8 FPS, exactly 14.5 FPS below the 1440p High result. Ultra settings produce 63.5 FPS, which is the lowest measured frame rate in the entire dataset but still above the 60 FPS threshold for smooth gameplay.

FAQ

Q: Is this combo capable of running Thief at 4K resolution?

A: Yes, the system maintains an average of 67.8 FPS at 4K with High settings and 63.5 FPS at Ultra settings. Even the most demanding preset keeps the frame rate above 60 FPS.

Q: Which settings preset provides the highest frame rate?

A: The Low preset at 1080p provides the highest measured frame rate at 122.2 FPS. At 4K, the Low preset achieves 89 FPS, which is the maximum for that resolution.

Q: How does the CPU performance compare to its nearest rivals?

A: The Intel Core i5-9400 has an average benchmark score of 2,305, which is 0.2% higher than the Intel Core i3-10305 and 0.4% higher than the Intel Xeon E-2134. It trails the Intel Core i7-8809G by 0.6%.

Q: What is the frame rate difference between 1080p and 4K on High settings?

A: The system produces 99.9 FPS at 1080p High and 67.8 FPS at 4K High, representing a 32.1 FPS drop when moving to the higher resolution.

Q: Does the GPU outperform its nearest rivals in synthetic benchmarks?

A: The AMD Radeon RX 7900 XTX has an average benchmark score of 44,019, which is 0.8% higher than the NVIDIA GeForce RTX 4090 Mobile and 1.6% higher than the NVIDIA Quadro M6000. It trails the AMD Radeon Pro 580 by 0.4%.

Q: At what resolution does the CPU become the limiting factor?

A: The data suggests the CPU becomes the primary constraint at 1080p and 1440p. The frame rate difference between these resolutions is smaller than expected, indicating the processor is limiting performance before the GPU becomes fully saturated.

CPU Role

The Intel Core i5-9400 is a 6-core, 6-thread processor from the Coffee Lake generation, running at a base clock of 2.90 GHz and a boost clock of 4.10 GHz. Its 9 MB of shared L3 cache and dual-channel DDR4 memory support provide adequate bandwidth for most gaming workloads. In Thief, the CPU's performance is the primary factor holding back the system. The processor's average benchmark score of 2,305 places it at the 50th percentile of all CPUs, which is a significant step down from the GPU's 85th percentile standing. This mismatch is evident in the resolution scaling data, where the frame rate differences between 1080p and 1440p are compressed, indicating the CPU is reaching its limits. The 6 threads are sufficient for the game's threading model, but the older architecture and modest clock speeds prevent the system from achieving the frame rates that the GPU could otherwise deliver. The data shows that at 1080p Low, the system produces 122.2 FPS, which likely represents the CPU's maximum throughput in this title. Beyond this point, the processor cannot feed the GPU fast enough to increase performance, regardless of the graphics card's capability.