Thief

Resolution Scaling

The measured FPS data for Thief with the AMD Ryzen 5 8400F and AMD Radeon RX 570 shows a steep performance cliff as resolution climbs. At 1920x1080 with Low settings, the combo averages 73.7 FPS; at 2560x1440 Low, that drops to 52.3 FPS, and at 3840x2160 Low, it falls to 33.2 FPS. This represents a 55% reduction from 1080p to 4K at the lowest preset, indicating that pixel throughput is the dominant constraint.

The pattern intensifies at higher settings. Moving from 1080p High (42.7 FPS) to 1440p High (30.4 FPS) to 4K High (16.9 FPS) shows a 60% loss from 1080p to 4K. The gap between Low and High at each resolution reveals the GPU's fill-rate ceiling: at 4K, the spread is just 16.3 FPS (33.2 vs 16.9), whereas at 1080p it is 31 FPS (73.7 vs 42.7). This compression at 4K signals that the Radeon RX 570's 32 ROPs and 224.0 GB/s memory bandwidth become the limiting factor well before the CPU's capabilities are taxed.

Ultra settings at 4K produce 17.6 FPS, only 0.7 FPS above High, confirming that the GPU is saturated. The data indicates that this combination is a 1080p-oriented pairing; 1440p is playable only on Low or Medium, while 4K is not viable for smooth gameplay under any preset.

GPU Role

The AMD Radeon RX 570 brings 4 GB of GDDR5 memory on a 256-bit bus, yielding 224.0 GB/s bandwidth. Its base clock is 1168 MHz with a boost of 1244 MHz, and the chip packs 2048 shading units, 128 TMUs, and 32 ROPs. The pixel rate of 39.81 GPixel/s and texture rate of 159.2 GTexel/s directly explain the resolution scaling behavior seen above.

At 1080p, the GPU delivers 73.7 FPS on Low, which is respectable for a 2017-era Polaris 20 part. The memory bandwidth proves sufficient at this resolution, as evidenced by the 17.2 FPS jump from Medium (56.5) to Low (73.7). However, at 1440p and 4K, the 224.0 GB/s bandwidth becomes a bottleneck. The 4K Low result of 33.2 FPS is less than half the 1080p Low figure, and the 4K Medium (24.4) and Ultra (17.6) results show diminishing returns from additional GPU work.

The GPU's 5.095 TFLOPS FP32 throughput is the theoretical peak, but real-world results indicate that memory subsystem limits bind earlier. The 7 Gbps effective memory speed, while adequate for older titles, cannot feed the shading units fast enough at higher resolutions. The 4 GB VRAM capacity is not directly tested here, but the consistent FPS drops across all settings at 4K suggest that both capacity and bandwidth contribute to the ceiling. The GPU's percentile rank of 74 among all GPUs, with an average benchmark score of 30158, places it near the NVIDIA GeForce RTX 5060 (30109, deltaPct 0.2) and AMD Radeon RX 7700 XT (30097, deltaPct 0.2) in synthetic tests, though those comparisons reflect aggregate compute, not this game's specific demands.

How This Combo Ranks

The combination of the AMD Ryzen 5 8400F and AMD Radeon RX 570 ranks 1550 out of 1642 tested combos in Thief. This places it in the bottom 6% of all pairings, which is a poor showing for a modern CPU paired with an aging GPU. The rank reflects the GPU's inability to keep pace with the CPU's potential, as the Ryzen 5 8400F's synthetic scores are far stronger than the GPU's.

The CPU alone sits in the 82nd percentile versus all CPUs, with an average benchmark score of 25064. Its nearest rivals include the AMD Ryzen 7 2700X (25057, deltaPct 0), the AMD Ryzen AI 5 PRO 340 (25099, deltaPct -0.1), and the AMD Ryzen 5 7500F (24993, deltaPct 0.3). Meanwhile, the GPU's 74th percentile ranking and 30158 average score place it near the NVIDIA GeForce RTX 5060 (30109, deltaPct 0.2) and AMD Radeon RX 7700 XT (30097, deltaPct 0.2). The delta between CPU and GPU percentiles—82 versus 74—suggests a mismatch: the processor is capable of driving far more frames than the graphics card can render.

In practical terms, this combo rank means that users with this pairing will see frame rates dominated by the GPU in almost every scenario. The only way to improve the rank would be to pair the CPU with a faster GPU, as the current bottleneck is unequivocally on the graphics side.

Settings Recommendations

Based on the measured rows, the optimal experience for this combo is at 1920x1080 with Low settings, yielding 73.7 FPS. This is the only preset and resolution combination that clears the 60 FPS threshold. Medium at 1080p produces 56.5 FPS, which is playable but not smooth, while High (42.7) and Ultra (43.8) both fall short of fluid motion.

At 2560x1440, Low (52.3 FPS) is the only viable option for semi-smooth gameplay; Medium drops to 42.1 FPS, and High and Ultra fall to 30.4 and 30.0 respectively. For users prioritizing visual fidelity over frame rate, 1080p Ultra at 43.8 FPS is the best compromise, as it offers higher detail than High (42.7) with a marginal FPS cost.

4K is not recommended under any settings. The best 4K result is Low at 33.2 FPS, which is below the threshold for comfortable play. The data shows that this hardware combination should target 1080p Low or Medium for a responsive experience, with 1440p Low as a secondary option if resolution is preferred over settings.

FAQ

Q: What is the best resolution for this CPU/GPU combo in Thief?

A: The data shows 1920x1080 is the only resolution where any preset exceeds 60 FPS. At 1080p Low, the combo averages 73.7 FPS, while 1440p Low drops to 52.3 FPS and 4K Low falls to 33.2 FPS.

Q: Can this combo handle 4K gaming in Thief?

A: No. The highest 4K average is 33.2 FPS on Low settings, with Ultra producing just 17.6 FPS. These results are below playable thresholds.

Q: How does the CPU compare to its nearest rivals in synthetic benchmarks?

A: The Ryzen 5 8400F scores 25064 average, with the AMD Ryzen 7 2700X at 25057 (deltaPct 0), the AMD Ryzen AI 5 PRO 340 at 25099 (deltaPct -0.1), and the AMD Ryzen 5 7500F at 24993 (deltaPct 0.3). The differences are negligible, all within 0.3%.

Q: What is the GPU's synthetic benchmark standing?

A: The Radeon RX 570 has an average benchmark score of 30158 and ranks in the 74th percentile. Its nearest rivals include the NVIDIA GeForce RTX 5060 (30109, deltaPct 0.2) and AMD Radeon RX 7700 XT (30097, deltaPct 0.2).

Q: Why does the combo rank so low despite a modern CPU?

A: The combo ranks 1550 out of 1642 in Thief. The CPU is in the 82nd percentile, but the GPU is in the 74th, and the measured FPS shows the GPU is the limiting component at all resolutions and settings.

Q: Which settings offer the highest frame rate at 1080p?

A: Low settings at 1080p produce 73.7 FPS, the highest measured result. Medium yields 56.5 FPS, while High and Ultra produce 42.7 and 43.8 FPS respectively.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor from the 8000 series, built on Zen 4 architecture with a 4 nm process. Its base clock is 4.20 GHz with a boost of 4.70 GHz, and it carries 16 MB of shared L3 cache plus 1 MB L2 per core. The CPU uses DDR5 memory with dual-channel support and 83.2 GB/s bandwidth. Its TDP is 65 W, and it has a launch MSRP of $170.

In synthetic benchmarks, the CPU scores 20851 in Cinebench R23 multicore and 2943 in single-core, with a PassMark multithread score of 24530. The 3DMark results show scaling from 951 single-thread to 6165 max-threads, indicating strong multi-threading efficiency. The CPU's 82nd percentile rank places it above the Ryzen 7 2700X (25057, deltaPct 0) in average benchmark score.

In Thief, the CPU's role is understated because the GPU bottleneck dominates. At 1080p Low, the 73.7 FPS result is likely near the CPU's practical limit for this game, but the 4K results (33.2 FPS Low, 17.6 FPS Ultra) show that the GPU is the sole constraint at higher resolutions. The 12 threads provide ample headroom for the game's stealth mechanics and AI, but the measured data cannot isolate CPU-specific frame times because the GPU saturates first. The CPU's PassMark physics score of 1391 and data encryption score of 16684 suggest strong general computation, but these do not translate to higher FPS when the GPU is maxed out.

Measured FPS Breakdown

The complete measured data set for Thief with the AMD Ryzen 5 8400F and AMD Radeon RX 570:

• 1920x1080 Low: 73.7 FPS average
• 1920x1080 Medium: 56.5 FPS average
• 1920x1080 High: 42.7 FPS average
• 1920x1080 Ultra: 43.8 FPS average
• 2560x1440 Low: 52.3 FPS average
• 2560x1440 Medium: 42.1 FPS average
• 2560x1440 High: 30.4 FPS average
• 2560x1440 Ultra: 30.0 FPS average
• 3840x2160 Low: 33.2 FPS average
• 3840x2160 Medium: 24.4 FPS average
• 3840x2160 High: 16.9 FPS average
• 3840x2160 Ultra: 17.6 FPS average

The 1080p results show a clear hierarchy: Low beats Medium by 17.2 FPS, Medium beats High by 13.8 FPS, and High is nearly identical to Ultra (42.7 vs 43.8, a 1.1 FPS difference favoring Ultra). This suggests that Ultra settings do not impose a meaningful additional cost over High at 1080p.

At 1440p, the spread narrows: Low (52.3) to Medium (42.1) is a 10.2 FPS drop, Medium to High is 11.7 FPS, and High to Ultra is just 0.4 FPS. The 4K results compress further, with Low (33.2) to Medium (24.4) losing 8.8 FPS, Medium to High losing 7.5 FPS, and High to Ultra actually gaining 0.7 FPS. This non-monotonic behavior at 4K Ultra (17.6 vs High's 16.9) indicates measurement variance within the GPU's saturated state, not a real performance advantage.

The data confirms that the GPU's 4 GB memory and 224.0 GB/s bandwidth cannot sustain playable frame rates at 4K, and 1440p is only viable on Low settings. The 1080p Low result of 73.7 FPS remains the single playable configuration for smooth gameplay, with 1080p Medium as a fallback at 56.5 FPS.