Thief

The pairing of the AMD Ryzen 7 5800X with the Intel Arc B390 delivers a performance profile that is far more dependent on the graphics side than the processor. In _Thief_, this combination places 3307th out of 3720 tested combos in the database, a position that puts it in the bottom portion of all measured configurations. The measured frame rates confirm that the chip is essentially always the limiting factor, with all average FPS values at every resolution and quality preset staying well below the thresholds typical of a smooth experience. The lone 3DMark Steel Nomad score of 1482 for the Arc B390, alongside a 9th percentile rank among GPUs, indicates extreme graphics-bound behavior. The CPU's 81st percentile and a 3DMark multi-threaded score of 7586 reinforce that the processor's headroom is largely unused in this context. The result is a combo that cannot deliver playable frame rates in _Thief_ at any setting except the lowest at 1080p, and even then only when the target is endurance over smoothness.

How This Combo Ranks

The combo is ranked 3307 out of 3720 tested combinations for this game. That places it within the last 11.5% of all combos, and the frame-rate data supports that equivalence. The CPU, a Ryzen 7 5800X with 8 cores and 16 threads, carries a noon-21st-percentile of all CPUs, but the ranking is almost entirely dictated by the GPU's performance. The Arc B580 has a 9th percentile standing among all GPUs, which is profoundly low. Simply put, the CPU's relative strength is obsoleted by the graphics unit. The measured 3DMark Steel Nomad score of 1482, compared to its nearest rivals such as the NVIDIA GeForce GT 710 (1476) and the GeForce 8500M (1460), clarifies that the Arc B580 is anchored to the performance of decade-old entry-level graphics parts. The combo's rank in-game is thus a function of GPU capability, not CPU capability.

FAQ

Q: What is the best frame rate this combo can achieve in _Thief_?

A: Based on the measured rows, the highest average FPS recorded is 86 at 1920x1080 with Low settings. The next best be observed is 82 at 1080p with Medium, which is below the 86 threshold. The 1080p Low row and the 1080p Medium row (86 and 66 FPS) are the only ones that clear 60 FPS across the entire dataset.

Q: Can this setup handle 1440p in _Thief_?

A: According to the measured frames, the best score at 2560x1440 is Low, which gives an average of 59 FPS. The Medium row delivers 45, High 34, and Ultra 33. None of these meet the 60 FPS mark, meaning 1440p is marginal at best and will require the Low preset to approach playability.

Q: How does the GPU's dedicated VRAM affect performance?

A: The GPU does not have a fixed memory size; it uses System Shared memory. The memory type and bus are also shared, with a "System Dependent" bandwidth. In practice, this means that the absence of a dedicated VRAM pool, which forces the GPU to use a shared system-wide memory for textures and storage, severely limits its ability at high resolutions. The large drop from 1080p to 4K in the measured data shows this: for example, the Ultra preset on 1080p gets 48 FPS, falls to 33 on 2560x1440, and just 19 FPS on 3840x2160, a dramatic fall that is consistent with a GPU that lacks dedicated memory.

Q: What do the min and max FPS columns indicate for this combo?

A: The dataset provides min and max only for Medium presets across all resolutions: 1080p Medium has a min of 56 and max of 75; 1440 Medium has min 38 max 52; 4K Medium min 22 max 30. These numbers show that even within the Medium setting, the frame rate rides in a wide band, implying that the GPU activity is constantly changing load and that hitting a consistent frame rate is improbable.

Q: How fast is the CPU relative to the GPU within this game?

A: The CPU has a 3DMark 16-thread score of 7586, and a 16-thread (max) score of 7578, which is high in absolute terms. However, the whole frame-rate output is constrained by the GPU, which has only a 3DMark Steel Nomad score of 1482. The CPU's many and threads can feed frames quickly when needed, but the GPU cannot render them quickly. The limiting factor is the GPU's fill rate and memory, not the CPU.

Q: Could the CPU be upgraded or is it the system that is binding?

A: Upgrading the CPU would only make marginal improvements because the GPU is already the gate at all settings. For example, the 8-core Ryzen 7 5800X with a boost clock of 4.70 GHz is much more powerful than the GPU can utilize. The data shows the CPU is not the constraint.

Settings Recommendations

Evaluating all measured presets, the only configuration that allows the frame counter to push past 60 is 1920x1080 with Low settings, which yields 86 average FPS. For players who prefer a slightly richer visual and adjust to a 60+ experience, 1080p Medium shows an average of 66 FPS, though the minimum is 56, so occasional dips below 60 can be expected. At 1440p, even Low only reaches 59 FPS, super barely below the 60 threshold, and the other presets (Medium 45, High 34, Ultra 33) are not recommendable for smooth play. At 3840x2160, none of the presets come close to 60; the lowest of the high is a 35 average on Low, making it a slideshow rather than a game.

The data clearly indicates that, for this particular pairing, the playable envelope exists only at 1080p. Choosing between Low and Medium forms the real choice: Low provides 20 more FPS over Medium but visually occupies the least logic for shadows and turbulence, while Medium preserves a mostly 60+ frame rate barring occasional dips. No justification exists for selecting High or Ultra presets; they provide only 50/48 at 1080p, and significantly lower rates at two other resolutions. Therefore, the best measured experience is either 1080p Low for a meaningful 0 FPS headroom or 1080p Medium if visual quality is required but still above 60 average.

Measured FPS Breakdown

The recorded measurement rows are sparse but consistent across three resolutions and four quality presets. For 1920x1080, the average frame rate and the presence of min/max are as follows: Low 86, Medium 66 (min 56, max 75), High 50, and Ultra 48. That progression from Low to Ultra shows a and 38-frame drop at the ends. For 2560x1440: Low 59, Medium 45 (min 38, max 52), High 34, and Ultra 33. Here, only Medium includes min/max. For 3840x2160: Low 35, Medium 26 (min 22, max 30), High 20, and Ultra 19. Again, min/max only appears for Medium.

The 1080p numbers are the only ones that cross the 60 FPS line 86 Low, 15. Outside of that, most numbers are in the 30–59 range, with the 4K values falling into the 19–35 range. The 1440p values are a mirror of the 1080p but shift down by 30-40% across the same presets. The ordering is consistent: Low is highest, Medium second, High third, Ultra last. Notably, High to Ultra is a small jump (e.g., 50 to 48 at 1080p, 20 to 19 at 4K), suggesting that the Ultra preset adds little penalty over High for this integrated GPU, perhaps because the GPU's limited ROPs (24) and memory bandwidth already cap both preset levels to a similar limit.

Resolution Scaling

The FPS progression from 1920x1080 to 3840x2160 illustrates a very steep decline across every preset. For example, the Low preset goes from 86 (1080p) to 59 (1440p) to 35 (4K). Medium runs 66 → 45 → 26. High runs 50 → 34 → 20. Ultra runs 48 → 33 → 19. The drop from 1080p to 4K represents getting nearly a factor-of-three reduction for Low (86-to-35) and about a factor-of-two to three for the rest. Even at 1440p, the numbers fall to go near 60, meaning the high pixel count strongly penalizes the GPU.

This is a clear indication that the GPU is the principal limiter: the integrated Luster B390 does not have physical VRAM, it shares system memory (System Shared, "System Dependent" bandwidth). Its texture rate is 120.0 GTexel/s yields a theoretical fill of 60.00 GPixel/s. With only 12 TMUs and 48 ROPs of active (24 ROPs), it blanks when forcing a higher pixel output. The CPU is not the cause here, as it is delivered with 32 MB L3 cache and a boost clock of 4.7 GHz, enough for any directive. The pixel/texel throughput and shared memory bus are overwhelmed by the center of the raw data.

CPU Role

The AMD Ryzen 7 5800X is a Vermeer Gen 4 desktop processor for the Socket AM4, built with an 8-core / 16-threads across 16MT. Its base clock is 3.80 GHz and boost to 4.70 GHz. It carries 32 MB of L3 cache, and it supports DDR4 dual channel memory bus. The CPU's own benchmark performance in this dataset is strong: Cinebench R23 multicore 15476, single core 1574.5, Geekbench multi 11036 (single 2032), and a PassMark multi-thread 27732. Its avgBenchmarkScore is 29123, and it ranks 81st percentile against all CPUs. But all of this outperformance fuses into nothing in _Thief_ because, as the measured framerates show, the graphics unit is simply too slow to turn those CPU cycles into pixels. Even the 3DMark 16-thread score of 7586 and 2-thread of 1846 indicate that the processor can handle the multi-threading that a 2014 game uses, but that processing closes gets blocked at the GPU due to its low L3-pixel budget.

The system's memory support matches the CPU; it is a DDR4-3200. But the GPU has no separate memory and depends on system DRAM, which is also a productivity cost for the copy.

The reason the rank is as low as 3307 / 3720 is not the CPU. The CPU's single-thread performance is still suitable for most games, but _Thief_ structures around the APS/GPU.

GPU Role

The Intel Arc BG390 is a chip labelled as a B-series Arc GPU but with characteristics of an integrated design: slot width “IGP”, no power connectors, Display Outputs dependent. It has a 12 MB of shared system memory, no VRAM of its own, and its bandwidth is “System Dependent”. It is built on a 3nm process with Xe3-LPG architecture for an ARM integrated unit. With base 30000 MHz and a boost up to 2500 MHz, its throughput is limited: it has 1536 shading units, 48 TMUs, 24 ROPs, and 12 ray-tracing cores. Its volume utilization yields a FP32 of 7.680 TFLOPS, and it uses a TDP of 80 W. Its only benchmark is the 3DMark Steel Nomad, scoring 1482. That score lies just a hair ahead of the GeForce GT Micro (1463) and 2.5% above the GeForce GT 625 OEM (1443). In the overall GPU ranking, that places it at the 9th percentile of GPUs, e.g., bottom of the pile.

In _Thief_, this GPU is the primary binding on the combo. The 4K intensity from 1080to 4K loses most of its performance due to the shared-memory and low ROP count. At any resolution and quality preset, the GPU cannot sufficiently pull the framebuffers – evidence that the runs low to medium. The CPU could supply echoes, but the disc of the low :shader/texel rates (48 TMUs) and slow effective DRAM bandwidth (shared) keep the frame rates in the 20-60 range. The 3307th place in the global combination ranking reflects the balanced situation : a modern 8-core CPU is held captive on a sturdily low far-positioning GPU. This means the Limiting factor stands clearly with the Intel Arc B580, not the Ryzen 7 5800X.