Doom

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 7 7800X3D is an 8-core, 16-thread desktop processor built on the Zen 4 (Raphael) architecture using TSMC's 5 nm process. It operates with a base clock of 4.20 GHz and a boost clock of 5.00 GHz, drawing a 120 W TDP. The CPU's L3 cache measures 96 MB shared, which is substantial for gaming workloads that benefit from large on-die data pools. The processor also carries 64 KB of L1 cache per core and 1 MB of L2 cache per core, alongside dual-channel DDR5 memory support with a theoretical bandwidth of 83.2 GB/s.

In this Doom configuration, the CPU is paired with an integrated-class GPU, which fundamentally changes how the processor's capabilities are expressed. The 7800X3D's benchmark scores show strong multi-threaded performance: it reaches 16,817 in Cinebench R23 multi-core and 1,713 in single-core, while Geekbench reports 15,610 multi-core and 2,426 single-core. These figures place the CPU in the 83rd percentile among all processors, with an average benchmark score of 33,079. Its nearest rivals — the AMD Ryzen 7 8700G, Intel Core i7-13650HX, and AMD Ryzen 7 7745HX — all score within 0.1% of this average, while the AMD Ryzen 9 PRO 6950H trails by 0.4%.

For Doom specifically, the CPU's role is largely preparatory: the game's engine is well-known for scaling across cores, and the 7800X3D's 8-core/16-thread layout provides ample headroom for physics, AI, and scene management. However, because the GPU in this combo is an Intel Arc B390 with system-shared memory, the measured frame rates suggest the processor is rarely the bottleneck. At 1080p Low, the combo achieves 107 FPS average, which is the highest measured value in the entire dataset. The fact that dropping to 720p or lower is not tested suggests the CPU could push further, but the GPU's limits become evident as resolution and settings increase.

The 7800X3D's 3DMark results reinforce its gaming pedigree: 7,980 in the 16-thread test, 6,539 in the 8-thread test, and 3,684 in the 4-thread test. The single-thread score of 959 in 3DMark is modest, but Doom does not rely heavily on single-core performance. The processor's 83rd percentile ranking relative to all CPUs indicates it sits well above the median, yet the measured FPS in this combo never exceed 107 average, which is far below what the CPU alone could support. This points to the GPU as the limiting factor across all tested configurations.

FAQ — 4-6 Q&A pairs answerable from FACT PACK data

Q: What is the highest average FPS recorded for this combo in Doom?

A: The highest average FPS is 107, achieved at 1920x1080 resolution with Low settings. At the same resolution, Medium settings yield 93 FPS average, High settings yield 78 FPS average, and Ultra settings yield 64 FPS average.

Q: How does the Intel Arc B390 compare to its nearest GPU rivals?

A: The Arc B390 has an average benchmark score of 1,482, placing it in the 9th percentile of all GPUs. Its nearest rival, the NVIDIA GeForce GT 520MX, scores 1,463, which is 1.3% lower. The NVIDIA GeForce 800M is 1.5% lower, the GT 625 OEM is 2.5% lower, and the GT 710 is 2.7% lower.

Q: What is the combo's rank among all tested combinations in Doom?

A: The combo ranks 2,580th out of 2,930 tested combinations. This places it in the lower portion of the distribution, consistent with the GPU's low percentile ranking relative to all GPUs.

Q: What is the FPS difference between Low and Ultra settings at 1440p?

A: At 2560x1440, Low settings produce 69 FPS average, while Ultra settings produce 41 FPS average. This represents a 28 FPS drop, or roughly a 40% reduction in average FPS when moving from the lowest to the highest preset.

Q: Does the CPU's benchmark performance align with its gaming results here?

A: The CPU scores in the 83rd percentile, yet the combo's FPS are low overall. At 4K Ultra, the average FPS is only 22, which is consistent with the GPU's 9th percentile ranking. The data indicates the CPU is not the bottleneck; the GPU's system-shared memory and low compute throughput constrain performance.

Q: What is the minimum FPS recorded at 1080p Medium?

A: At 1920x1080 with Medium settings, the minimum FPS is 79, the maximum is 107, and the average is 93. The minimum-to-maximum spread of 28 FPS suggests some frame-time variability, but the average remains playable for a 2016 FPS title.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data reveals a clear and consistent scaling pattern across resolutions. At 1080p, the combo averages 107 FPS on Low, 93 on Medium, 78 on High, and 64 on Ultra. Moving to 1440p, those figures drop to 69, 60, 51, and 41 respectively. At 4K, the averages fall further to 37, 33, 28, and 22. The relative drop from 1080p to 1440p is roughly 35% across settings (e.g., 107 to 69 on Low, 78 to 51 on High). From 1440p to 4K, the drop is another 40-50% (e.g., 69 to 37 on Low, 51 to 28 on High).

This scaling behavior is characteristic of a GPU-bound scenario. If the CPU were the limiting factor, the FPS would remain relatively flat as resolution increases, since the CPU's workload would stay constant while the GPU's pixel load grows. Instead, the FPS falls sharply with each resolution step, indicating that the Intel Arc B390's rendering throughput is the constraint. The GPU's pixel rate is 60.00 GPixel/s and its texture rate is 120.0 GTexel/s, which are low figures for modern gaming. At 4K Ultra, the average FPS of 22 is below the 30 FPS threshold typically considered the minimum for playable action, and even 4K Low at 37 FPS is marginal.

The scaling also shows that the GPU's fill-rate and shading capacity degrade quickly with pixel count. The Arc B390 has 1,536 shading units, 48 TMUs, and 24 ROPs, with an FP32 throughput of 7.680 TFLOPS. These specs place it in the 9th percentile of all GPUs, and the measured FPS confirm this positioning. The CPU's 96 MB L3 cache and high multi-thread scores do not compensate for the GPU's limitations in pixel-heavy workloads. For a game like Doom, which is generally optimized for wide hardware support, the resolution scaling here is a direct reflection of the GPU's modest compute resources.

How This Combo Ranks — use comboRankInGame vs other tested combos

The combo of AMD Ryzen 7 7800X3D and Intel Arc B390 ranks 2,580th out of 2,930 tested combinations in Doom. This places it in the bottom 12% of all combos, which aligns with the GPU's low percentile ranking of 9%. The CPU's high percentile of 83% does little to boost the combo's overall standing, because the GPU's performance ceiling is so low. The rank suggests that most other tested combinations — likely pairing the same or similar CPUs with more capable discrete GPUs — produce higher frame rates.

The nearest GPU rivals for the Arc B390 are all older, low-end NVIDIA parts: the GT 520MX, GeForce 800M, GT 625 OEM, and GT 710. These GPUs are from a much older era, and their presence in the rival list underscores the Arc B390's position as an integrated-class solution. In Doom, the combo's rank of 2,580 out of 2,930 means it outperforms roughly 350 other combinations, likely those with even older or less capable GPUs. However, the overall distribution shows that this combo sits near the bottom, and the measured FPS — particularly at 4K Ultra with an average of 22 FPS — confirm that it is not suited for high-resolution, high-settings gaming.

The combo's rank relative to the CPU's rivals is also informative. The 7800X3D's nearest CPU rivals (8700G, i7-13650HX, 7745HX) have nearly identical average scores, but their gaming results would depend on the GPU paired with them. In this case, the GPU drags the combo down. The data does not provide scores for other combos with the same CPU and different GPUs, so the rank cannot be directly attributed to the CPU vs. GPU contribution. However, given that the CPU is in the 83rd percentile and the GPU is in the 9th, the GPU is the dominant factor in the combo's low rank.

GPU Role — VRAM, clocks, and how they relate to this game's results

The Intel Arc B390 is an integrated graphics processor (IGP) based on the Xe3-LPG architecture, manufactured on Intel's 3 nm process. It has a base clock of 300 MHz and a boost clock of 2500 MHz, with system-shared memory — meaning it uses the host system's RAM rather than dedicated VRAM. The memory type, bus width, and bandwidth are all listed as "System Shared" or "System Dependent," which means performance scales with the system's memory configuration. The GPU's TDP is 80 W, and it has no dedicated power connectors, consistent with its IGP form factor.

The GPU's compute resources are modest: 1,536 shading units, 48 TMUs, 24 ROPs, and 12 ray-tracing cores. Its pixel rate is 60.00 GPixel/s, texture rate is 120.0 GTexel/s, and FP32 throughput is 7.680 TFLOPS. These figures place it in the 9th percentile of all GPUs, with an average benchmark score of 1,482 in the 3DMark Steel Nomad DX12 test. The nearest rivals are all low-end NVIDIA parts from over a decade ago, with the GT 520MX being 1.3% slower, the GeForce 800M 1.5% slower, the GT 625 OEM 2.5% slower, and the GT 710 2.7% slower.

In Doom, the GPU's system-shared memory is a significant factor. The game's textures and geometry must be accessed through the system memory bus, which is shared with the CPU. This can introduce latency and bandwidth contention, especially at higher resolutions where larger amounts of data are processed. The measured FPS at 1080p Low (107 average) indicates the GPU can handle the game's lighter loads, but the sharp drop to 22 FPS at 4K Ultra shows its limits. The GPU's 24 ROPs are particularly low for 4K output, and the 60.00 GPixel/s pixel rate is insufficient to fill 8.3 million pixels per frame at high frame rates. The boost clock of 2500 MHz is respectable, but the small number of shading units limits its overall throughput.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS data covers three resolutions (1920x1080, 2560x1440, 3840x2160) and four settings presets (Low, Medium, High, Ultra), for a total of 12 data points. All values are average FPS unless otherwise noted.

At 1920x1080, the combo achieves:

• Low: 107 average FPS
• Medium: 93 average FPS (minimum 79, maximum 107)
• High: 78 average FPS
• Ultra: 64 average FPS

At 2560x1440, the combo achieves:

• Low: 69 average FPS
• Medium: 60 average FPS (minimum 51, maximum 69)
• High: 51 average FPS
• Ultra: 41 average FPS

At 3840x2160, the combo achieves:

• Low: 37 average FPS
• Medium: 33 average FPS (minimum 28, maximum 37)
• High: 28 average FPS
• Ultra: 22 average FPS

The Medium preset at each resolution includes minimum and maximum values. At 1080p Medium, the range is 79 to 107 FPS, a spread of 28 FPS. At 1440p Medium, the range is 51 to 69, also a spread of 18 FPS. At 4K Medium, the range is 28 to 37, a spread of 9 FPS. The narrowing range at higher resolutions suggests that frame times become more consistent as the GPU becomes fully saturated, but the averages remain low.

The settings impact is consistent across resolutions. Moving from Low to Ultra reduces FPS by roughly 40% at each resolution: at 1080p, 107 to 64 (a 43 FPS drop); at 1440p, 69 to 41 (a 28 FPS drop); at 4K, 37 to 22 (a 15 FPS drop). The absolute reduction is smaller at higher resolutions because the GPU is already near its limit, but the percentage reduction is similar.

Settings Recommendations — which preset gives the best experience per the measured rows

Based on the measured FPS data, the optimal settings preset depends on the target resolution and the user's tolerance for frame rate. For a 60 FPS target, which is common for FPS games, the combo can only reliably achieve this at 1080p with Low or Medium settings. At 1080p Medium, the average is 93 FPS with a minimum of 79, which is well above 60. At 1080p High, the average drops to 78 FPS, still above 60, but the margin is thinner. At 1080p Ultra, the average falls to 64 FPS, which is marginally above 60 but leaves little headroom for demanding scenes.

At 1440p, the 60 FPS target is only met with Low settings (69 average). Medium settings at 1440p average 60 FPS exactly, with a minimum of 51, meaning some scenes will dip below 60. High settings at 1440p average 51 FPS, and Ultra averages 41. For a 30 FPS target, which is often considered the minimum for playability, 1440p High (51 average) and even 4K Low (37 average) could be acceptable, but 4K Medium (33 average) is borderline, and 4K Ultra (22 average) is below the threshold.

The best overall experience for most users would be 1080p Medium or High. Medium provides a comfortable margin above 60 FPS (93 average, 79 minimum), while High still maintains an average of 78 FPS. The visual uplift from Medium to High is likely noticeable, and the FPS cost is 15 FPS on average. For users who prioritize frame rate over visual fidelity, 1080p Low at 107 FPS is the smoothest option. At 1440p, Low is the only preset that maintains a solid 60+ FPS average, making it the recommended choice for that resolution. At 4K, none of the presets achieve 60 FPS, and the best option is Low at 37 FPS, which is playable but not ideal for fast-paced action. The data suggests that the combo is best suited for 1080p gaming with Medium or High settings, where it delivers a playable experience without excessive frame rate drops.