Thief

# Thief Combo Analysis: Intel Core i5-12400F + NVIDIA GeForce RTX 5080

This pairing places 190th out of 1,642 tested combinations for Thief, putting it in the top 12% of all configs evaluated. The combination of a mid-range Alder Lake processor with a flagship Blackwell GPU creates an interesting imbalance worth examining—the RTX 5080 clearly dominates the performance picture, but the i5-12400F proves capable enough to avoid becoming a bottleneck at most settings.

How This Combo Ranks

The combo rank of 190 out of 1,642 tested configurations signals strong overall performance, though not elite-tier. This position makes sense given the hardware mix: the RTX 5080 sits in the 89th percentile among all GPUs, while the i5-12400F ranks in the 77th percentile among CPUs. The gap between these percentile positions suggests the processor is the limiting factor in some scenarios, yet the combination still outperforms roughly 88% of all tested rigs.

Looking at the CPU's nearest rivals, the i5-12400F's average benchmark score of 19,221 places it nearly identical to the Intel Core i7-8700K (19,210, a 0.1% difference) and the Intel Core i5-1335U (19,167, 0.3% ahead). The AMD Ryzen 5 7533HS scores 19,364 (0.7% higher), while the AMD EPYC 7773X trails at 18,979 (1.3% behind). These tight margins indicate the i5-12400F punches at a level comparable to previous-generation high-end parts.

For the GPU, the RTX 5080's average benchmark score of 59,188 places it 1.6% ahead of the Intel Arc A570M (58,239) and 2.5% ahead of the Intel Arc A580 (57,756). It trails the Intel Arc Pro A60 by 1.9% (60,326) and the AMD Radeon Pro W5500X by 2.6% (57,661). These comparisons reveal that while the RTX 5080 is a strong performer, the deltaPct values against these rivals are surprisingly small, suggesting the benchmark database captures a narrow performance band at this tier.

GPU Role

The RTX 5080 brings 16 GB of GDDR7 memory across a 256-bit bus, delivering 960.0 GB/s of bandwidth. Its base clock runs at 2,295 MHz with a boost clock of 2,617 MHz, while memory operates at 1,875 MHz (30 Gbps effective). These specifications translate into a pixel rate of 293.1 GPixel/s and a texture rate of 879.3 GTexel/s, with FP32 compute reaching 56.28 TFLOPS—figures that explain why Thief runs smoothly even at 4K Ultra.

The GPU's 10,752 shading units, 336 TMUs, and 112 ROPs provide ample geometry and pixel throughput for a 2014-era title. Thief's engine, while visually demanding for its time, does not stress modern ray tracing or tensor cores, which number 84 and 336 respectively. The PassMark G3D score of 36,565 and 3DMark Steel Nomad DX12 score of 8,637 confirm the card's raw capabilities, though Thief's older DirectX pipeline likely doesn't leverage the full Blackwell feature set.

The 89th percentile GPU ranking reflects strong but not top-tier standing. What's notable is how the RTX 5080 handles Thief's varied settings: even at 4K Ultra, it maintains playable frame rates, which speaks to the card's headroom relative to this game's demands.

Resolution Scaling

The FPS progression across resolutions reveals where the bottleneck shifts. At 1080p Low, the combo achieves 173.3 FPS, dropping to 148.3 FPS at 1440p Low (a 14.4% reduction), then to 125.7 FPS at 4K Low (a further 15.2% drop). This pattern shows that at lower settings, the GPU still has headroom, and the CPU begins to influence results.

Moving to High settings, the scaling changes: 142.3 FPS at 1080p, 126.4 FPS at 1440p (down 11.2%), and 84.2 FPS at 4K (down 33.4%). The steeper decline at 4K High indicates the GPU becomes the primary limiter as pixel count and shading complexity increase. Ultra settings show a similar trend: 136.3 FPS at 1080p, 120.7 FPS at 1440p (down 11.4%), and 80.1 FPS at 4K (down 33.6%).

The data suggests that from 1080p to 1440p, the i5-12400F's six cores and 12 threads keep pace adequately, with only 10-15% performance losses. The jump to 4K, however, costs 30-35% performance across High and Ultra settings, clearly indicating the RTX 5080's rendering load dominates. This resolution scaling pattern paints a picture of a system that's CPU-bound at 1080p but becomes progressively GPU-bound as resolution rises.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates. Low settings produce 173.3 FPS, Medium reaches 157.2 FPS, High hits 142.3 FPS, and Ultra manages 136.3 FPS. The spread between Low and Ultra is 37 FPS, a 21.4% reduction, showing that even at 1080p Ultra, the system maintains well over 130 FPS.

At 2560x1440, performance remains strong. Low settings yield 148.3 FPS, Medium 138.9 FPS, High 126.4 FPS, and Ultra 120.7 FPS. The gap between Low and Ultra narrows to 27.6 FPS (an 18.6% drop), suggesting the GPU handles the increased resolution without disproportionate penalties. Every setting at 1440p stays above 120 FPS, which is smooth for stealth gameplay.

At 3840x2160, the picture changes. Low settings produce 125.7 FPS, Medium 105.9 FPS, High 84.2 FPS, and Ultra 80.1 FPS. The Ultra-to-Low difference is 45.6 FPS (a 36.3% reduction), indicating that 4K Ultra imposes significant load on the GPU. Still, even the worst case of 80.1 FPS at 4K Ultra remains comfortably playable for a stealth title where reaction times matter less than in competitive shooters.

FAQ

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

A: Yes, the measured data shows 80.1 FPS average at 3840x2160 with Ultra settings, which is well above the 60 FPS threshold for smooth gameplay.

Q: How does the i5-12400F compare to its closest rivals?

A: The i5-12400F scores 19,221 on average benchmarks, placing it 0.1% above the Intel Core i7-8700K (19,210) and 0.3% above the Intel Core i5-1335U (19,167). It trails the AMD Ryzen 5 7533HS by 0.7% (19,364) and beats the AMD EPYC 7773X by 1.3% (18,979).

Q: What is the best resolution for this combo?

A: At 1440p, all settings stay above 120 FPS, with Ultra at 120.7 FPS. This provides a balance between visual quality and frame rate headroom, making it the sweet spot.

Q: Does the CPU bottleneck the GPU in Thief?

A: At 1080p Low, the combo hits 173.3 FPS, but scaling to 4K Low only drops to 125.7 FPS—a 27.5% reduction. The relatively modest decline at Low settings suggests the CPU limits performance at lower resolutions, while the GPU takes over at higher ones.

Q: How does the RTX 5080 rank among all GPUs?

A: The RTX 5080 sits in the 89th percentile of all GPUs, with an average benchmark score of 59,188. It outperforms the Intel Arc A570M by 1.6% and the Intel Arc A580 by 2.5%, while trailing the Intel Arc Pro A60 by 1.9%.

Q: What frame rate can players expect at 1080p High?

A: The measured average is 142.3 FPS at 1920x1080 with High settings, providing excellent smoothness for stealth gameplay.

CPU Role

The Intel Core i5-12400F features 6 cores and 12 threads, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. This Alder Lake-S processor, built on Intel's 10 nm process, includes 80 KB of L1 cache per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. Its 65 W TDP makes it a power-efficient choice, and it supports both DDR4 and DDR5 memory across a dual-channel bus.

Benchmark scores reveal the CPU's strengths: Cinebench R23 multicore hits 16,518, while single-core reaches 2,332. Geekbench multicore scores 9,138 and single-core 2,221. PassMark multithread results show 19,433, with single-thread at 3,481. These figures place the i5-12400F in the 77th percentile of all CPUs, with an average benchmark score of 19,221.

In Thief, the CPU's 3DMark scores matter for frame pacing: 16-thread tests hit 5,895, 8-thread reaches 4,779, and 4-thread scores 3,067. Single-thread performance of 909 on 3DMark indicates the processor handles the game's primary game logic thread adequately. The 12 threads ensure background tasks don't interfere with rendering, though the modest core count means the CPU can't match higher-end processors in heavily threaded scenes.

The nearest rival comparisons show the i5-12400F performs nearly identically to the older i7-8700K (0.1% difference), which suggests generational efficiency gains offset the core count difference. This makes the CPU a solid pairing for the RTX 5080, though at 1080p Low settings, the 173.3 FPS ceiling hints at CPU limitations that don't appear at higher resolutions.

Settings Recommendations

For players prioritizing maximum visual fidelity, Ultra settings at 2560x1440 deliver 120.7 FPS, providing a strong experience without the 4K Ultra penalty (80.1 FPS). The 1440p Ultra option offers 40.6 more FPS than 4K Ultra while maintaining high detail, making it the most balanced choice for demanding users.

If frame rate is the primary concern, 1080p Low achieves 173.3 FPS, but this sacrifices visual quality unnecessarily. A better middle ground is 1440p High at 126.4 FPS, which cuts only 46.9 FPS from the 1080p Low figure while providing substantially better graphics. For those with 4K displays, High settings at 84.2 FPS offer the best compromise, avoiding the 4.1 FPS drop to Ultra (80.1 FPS) while keeping visuals strong.

The data indicates Medium settings provide diminishing returns: at 1080p, Medium (157.2 FPS) is only 15.1 FPS faster than High (142.3 FPS), while at 1440p, the gap narrows to 12.5 FPS (138.9 vs 126.4). Players should therefore skip Medium and choose High for better image quality at minimal frame rate cost. The optimal experience across all resolutions is High settings, which consistently delivers the best balance of visuals and performance—142.3 FPS at 1080p, 126.4 FPS at 1440p, and 84.2 FPS at 4K.