Doom

# Analysis of AMD Ryzen 7 9850X3D + AMD Radeon RX 7900 XTX in Doom

The AMD Ryzen 7 9850X3D paired with the AMD Radeon RX 7900 XTX delivers exceptionally high frame rates in Doom across all tested resolutions and settings. The measured data shows this combination ranks 362nd out of 2,930 tested combos in this game, placing it in the top 12.4% of all configurations. The 8-core, 16-thread Zen 5 processor with a 96 MB shared L3 cache provides ample headroom, while the 24 GB GDDR6 memory on the RX 7900 XTX ensures no frame buffer limitations at any resolution. The following analysis breaks down the measured FPS data to provide actionable settings recommendations and a clear picture of how each component contributes to the overall experience.

Settings Recommendations

The measured FPS data reveals a clear hierarchy across settings presets, with the High preset offering the best balance of visual quality and performance headroom. At 1920x1080, the High preset achieves 269 FPS average, which is 49 FPS below the Low preset’s 366 FPS but still far above any display refresh rate in common use. The Medium preset at 319 FPS sits between these two, while Ultra drops to 220 FPS. The High preset’s 269 FPS at 1080p leaves substantial margin for frame time spikes, as evidenced by the Medium preset’s minimum FPS of 271 at this resolution — a figure that nearly matches the High preset’s average.

At 2560x1440, the High preset delivers 174 FPS average, which remains well above the 143 FPS of Ultra and comfortably exceeds the 176 FPS minimum observed for Medium. The data indicates that High at 1440p provides the most consistent experience, as the gap between High and Ultra (31 FPS) is proportionally larger than the gap between High and Medium (32 FPS), suggesting diminishing returns from Medium to High that are worth the visual uplift. At 3840x2160, the High preset produces 94 FPS average, which is the only 4K preset besides Low that maintains triple-digit performance. The Medium preset at 4K yields 112 FPS with a 95 FPS minimum, making it the recommended choice for 4K displays with variable refresh rate support, as the 95 FPS floor remains within typical VRR ranges.

For the best experience per the measured rows, the High preset at 1440p represents the sweet spot: it delivers 174 FPS average, which is 31 FPS higher than Ultra and only 32 FPS lower than Medium, while providing superior visual quality over Medium. At 4K, the Medium preset’s 112 FPS average with a 95 FPS minimum offers the most consistent high-refresh experience, as the High preset’s 94 FPS average lacks the same minimum frame rate guarantee. The Low preset, while achieving 366 FPS at 1080p and 237 FPS at 1440p, sacrifices too much visual fidelity for frame rates that exceed the refresh capabilities of virtually all displays.

GPU Role

The AMD Radeon RX 7900 XTX, built on the RDNA 3.0 architecture with the Navi 31 chip, provides the graphical horsepower for these results. Its 24 GB of GDDR6 memory on a 384-bit bus delivers 960.0 GB/s of bandwidth, which is more than sufficient for Doom’s texture and geometry demands at any resolution. The GPU’s 6,144 shading units, 384 texture mapping units, and 192 raster operation units are fully utilized across the settings range, as evidenced by the consistent frame rate scaling from Low to Ultra.

The GPU’s clock behavior is notable: the base clock runs at 1,929 MHz, the game clock at 2,365 MHz, and the boost clock reaches 2,498 MHz. These clocks, combined with 96 ray tracing cores and 61.39 TFLOPS of FP32 compute, allow the RX 7900 XTX to maintain high utilization even at 4K Ultra settings, where the average FPS drops to 77. The 355 W TDP indicates the card operates at high power envelopes to sustain these clocks, and the 750 W suggested PSU reflects the system-level requirements.

The GPU’s performance percentile of 64 against all GPUs, with an average benchmark score of 19,410, places it above the GeForce GTX 1060 3 GB (deltaPct 0.4%) and NVIDIA TITAN Xp (deltaPct 1.2%), while trailing the Quadro K5200 and FirePro D300 by 1% and 1.2% respectively. However, these synthetic benchmark comparisons do not directly translate to Doom’s measured FPS, where the RX 7900 XTX demonstrates strong scaling from 1080p to 4K. The 24 GB frame buffer eliminates any possibility of VRAM capacity limiting performance, even at 4K Ultra where the game’s texture sets are fully loaded.

Resolution Scaling

The FPS drop from 1080p to 4K reveals the GPU-bound nature of Doom at higher resolutions. At High settings, the average FPS decreases from 269 at 1080p to 174 at 1440p (a 35.3% reduction) and then to 94 at 4K (a 45.9% reduction from 1440p). This scaling pattern indicates that the GPU becomes increasingly the limiting component as resolution increases, with the CPU’s 8 cores and 16 threads providing sufficient headroom even at 1080p where the 366 FPS Low preset result suggests minimal CPU bottleneck.

The Medium preset shows a similar trend: 319 FPS at 1080p, 206 FPS at 1440p (35.4% reduction), and 112 FPS at 4K (45.6% reduction). The consistency of these percentage drops across settings presets — approximately 35% from 1080p to 1440p and 46% from 1440p to 4K — indicates that the resolution scaling is primarily driven by the GPU’s pixel and texture throughput rather than settings-dependent effects. The Low preset at 4K achieves 128 FPS, which is only 34.9% lower than the 1080p Low result of 366 FPS, suggesting that at Low settings the GPU is still the bottleneck but with less absolute load.

The measured data shows that 1080p and 1440p results are likely CPU-limited in certain scenarios, particularly at Low settings where 366 FPS at 1080p and 237 FPS at 1440p represent near-absolute ceilings for the CPU’s single-thread performance. The Ryzen 7 9850X3D’s boost clock of 5.60 GHz and 96 MB L3 cache contribute to this high frame rate ceiling, while the 4K results are more purely GPU-bound. The 24 GB VRAM and 960.0 GB/s bandwidth ensure that memory capacity or bandwidth never becomes a limiting factor, even at 4K Ultra where the GPU’s 77 FPS average reflects raw compute and rasterization limits rather than memory constraints.

FAQ

Q: What is the best settings preset for 1440p gaming with this combo?

A: The High preset at 2560x1440 delivers 174 FPS average, which is 31 FPS higher than Ultra’s 143 FPS and 32 FPS lower than Medium’s 206 FPS. Given the visual quality improvement over Medium and the substantial margin over 144 Hz displays, High provides the best balance.

Q: Does the 24 GB VRAM on the RX 7900 XTX ever become a limiting factor in Doom?

A: No. The 24 GB GDDR6 memory with 960.0 GB/s bandwidth exceeds Doom’s requirements at all tested settings, including 4K Ultra where the average FPS of 77 is determined by GPU compute limits, not VRAM capacity or bandwidth.

Q: How does the CPU affect 1080p performance in Doom?

A: The Ryzen 7 9850X3D’s 8 cores, 16 threads, and 5.60 GHz boost clock enable very high frame rates at 1080p, with the Low preset reaching 366 FPS. The 96 MB L3 cache and 89.6 GB/s memory bandwidth support the CPU’s ability to feed the GPU at these frame rates.

Q: Is the 4K Ultra preset playable with this hardware?

A: The 4K Ultra preset achieves 77 FPS average, which is playable but below the 94 FPS of High and 112 FPS of Medium. For 4K displays with 120 Hz or higher refresh rates, the Medium preset’s 95 FPS minimum makes it a more consistent choice.

Q: How does this combo rank compared to other tested configurations?

A: This combination ranks 362nd out of 2,930 tested combos in Doom, placing it in the top 12.4% of all configurations. The ranking reflects the strong synergy between the high-core-count CPU and the high-bandwidth GPU.

Q: What does the Medium preset’s minimum FPS tell us about frame consistency?

A: The Medium preset shows minimum FPS values of 271 at 1080p, 176 at 1440p, and 95 at 4K. These minimums are 85%, 85.4%, and 84.8% of their respective averages, indicating consistent frame pacing across all resolutions with no significant stuttering.

How This Combo Ranks

The combo rank of 362 out of 2,930 tested configurations places this system in the 87.6th percentile of all tested combos in Doom. This ranking is particularly strong given that the RX 7900 XTX’s standalone GPU percentile is 64 against all GPUs, and the Ryzen 7 9850X3D’s CPU percentile is 92 against all CPUs. The combination outperforms what the individual component percentiles might suggest, indicating that the pairing is well-matched for Doom’s specific workload characteristics.

The CPU’s nearest rivals in average benchmark score include the Intel Xeon Platinum 8260M (deltaPct 0.1%), Intel Xeon w5-2545 (deltaPct -0.2%), Intel Core i9-14900 (deltaPct 0.5%), and AMD Ryzen AI 9 HX 470 (deltaPct -0.7%). These deltas are all within 1% of the Ryzen 7 9850X3D’s average score of 58,386, indicating that the CPU sits in a tightly contested performance band. However, the 9850X3D’s 96 MB L3 cache and 5.60 GHz boost clock provide specific advantages in gaming workloads like Doom that may not be fully captured by synthetic averages.

The GPU’s nearest rivals, as measured by average benchmark score, are the NVIDIA GeForce GTX 1060 3 GB (deltaPct 0.4%), NVIDIA Quadro K5200 (deltaPct -1%), AMD FirePro D300 (deltaPct -1.2%), and NVIDIA TITAN Xp (deltaPct 1.2%). The RX 7900 XTX’s average benchmark score of 19,410 places it at the 64th percentile of all GPUs, yet in Doom the measured FPS results demonstrate performance that far exceeds what this percentile might imply, thanks to the GPU’s 24 GB VRAM and 960.0 GB/s bandwidth.

CPU Role

The AMD Ryzen 7 9850X3D plays a critical role in enabling the high frame rates observed at 1080p and 1440p. With 8 cores and 16 threads based on the Zen 5 architecture (Granite Ridge), the CPU’s base clock of 4.70 GHz and boost clock of 5.60 GHz provide exceptional single-thread performance, as evidenced by the Cinebench R23 single-core score of 2,228 and PassMark single-thread score of 4,704. The 96 MB shared L3 cache is particularly beneficial for gaming, as it reduces memory latency for frequently accessed data.

The CPU’s multi-threaded capabilities, shown by the Cinebench R23 multi-core score of 22,807 and PassMark multi-thread score of 41,318, ensure that even at 1080p Low settings where the GPU is less burdened, the CPU can sustain 366 FPS. The 16 threads handle the game’s background tasks and physics calculations without bottlenecking the main render thread. The CPU’s 89.6 GB/s memory bandwidth, provided by dual-channel DDR5 support, complements the L3 cache to maintain high memory throughput.

The CPU’s percentile of 92 against all CPUs, with an average benchmark score of 58,386, places it among the top processors. Its nearest rival, the Intel Core i9-14900, scores within 0.5% in average benchmarks, yet the 9850X3D’s 3D V-Cache configuration (implied by the X3D designation and 96 MB L3) likely provides additional gaming-specific advantages. The CPU’s 120 W TDP and 4 nm process node (TSMC) allow for high sustained clocks without thermal throttling, which is essential for maintaining consistent frame rates during extended gaming sessions.

Measured FPS Breakdown

At 1920x1080, the measured FPS values show a clear progression across settings. Low settings achieve 366 FPS average, Medium reaches 319 FPS with a minimum of 271 FPS and maximum of 367 FPS, High delivers 269 FPS, and Ultra produces 220 FPS. The Medium preset’s maximum of 367 FPS nearly matches the Low preset’s average, indicating that at 1080p the CPU is approaching its frame rate ceiling. The gap between Low and Medium is 47 FPS (12.8% reduction), while the gap between Medium and High is 50 FPS (15.7% reduction), and between High and Ultra is 49 FPS (18.2% reduction), showing consistent scaling with each settings tier.

At 2560x1440, the measured FPS values are: Low at 237 FPS, Medium at 206 FPS (minimum 176, maximum 237), High at 174 FPS, and Ultra at 143 FPS. The Medium preset’s maximum of 237 FPS exactly matches the Low preset’s average, again suggesting CPU limitation at this resolution for lower settings. The percentage reductions from Low to Medium (13.1%), Medium to High (15.5%), and High to Ultra (17.8%) are similar to the 1080p pattern, but the absolute frame rates are lower, reflecting the increased GPU load at 1440p.

At 3840x2160, the measured FPS values are: Low at 128 FPS, Medium at 112 FPS (minimum 95, maximum 129), High at 94 FPS, and Ultra at 77 FPS. The Medium preset’s minimum of 95 FPS is notably high relative to its average of 112 FPS (84.8%), indicating stable frame delivery at 4K. The reductions from Low to Medium (12.5%), Medium to High (16.1%), and High to Ultra (18.1%) follow the same proportional pattern as lower resolutions, but the absolute values are now clearly GPU-bound. The 4K Ultra result of 77 FPS represents the most demanding configuration tested, and the 24 GB VRAM ensures that no memory-related frame drops occur even under this load.