Doom

Doom (2016) running on the AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 5090 Mobile is a case study in what happens when a classic, well-optimized first-person shooter meets a modern flagship mobile platform. The dataset for this page contains twelve measured rows — three resolutions by four quality presets — plus full silicon specifications for both components and a composite ranking across tested hardware combinations. The headline numbers: average framerates span from 70 fps at 4K Ultra to 330 fps at 1080p Low, with the combo ranking 788th of 3712 tested pairings in this title. The analysis below walks through the CPU, the GPU, the scaling behavior, and the settings trade-offs indicated by the data.

CPU Role

The AMD Ryzen 9 8945HX is a 16-core, 32-thread mobile processor built on the Zen 4 architecture under the Dragon Range codename, fabricated on TSMC's 5 nm node. It runs a 2.50 GHz base clock with a 5.40 GHz boost, carries 64 KB of L1 and 1 MB of L2 cache per core, and shares a 64 MB L3 pool. Dual-channel DDR5 support supplies 83.2 GB/s of memory bandwidth, and the chip offers 28 lanes of PCIe Gen 5 from the CPU alone — more than enough to keep the discrete GPU fed. Its 55 W TDP and AMD Socket FL1 package mark it as a mobile part, and its release date of 2025-04-22 places it among the newest silicon in this database.

For Doom, a game released in 2016, raw single-thread throughput matters more than core count. The 8945HX delivers both. Its single-core Cinebench scores — 607 in R15, 2532 in R20, and 6030 in R23 — sit alongside a Passmark single-thread score of 3907, indicating a processor capable of keeping draw-call submission far ahead of what this engine demands. The multi-core results (4305 in R15, 17939 in R20, 42713 in R23, and 51405 in Passmark Multithread) are effectively surplus for a title of this age.

Context from the database reinforces how strong this chip is. The 8945HX sits in the 95th percentile versus all CPUs, with an average benchmark score of 76212. Its nearest rivals tell an interesting story: the Intel Core Ultra 9 285HX averages 76155, a gap of just 0.1 percent; the AMD EPYC Embedded 8224P averages 76492 (0.4 percent ahead); the AMD Ryzen Threadripper PRO 9945WX averages 76513 (also 0.4 percent ahead); and the AMD Ryzen 9 9950X3D averages 75779, which the 8945HX beats by 0.6 percent. In other words, a desktop X3D chip and a Threadripper PRO are within fractions of a percent of this mobile part. None of these differences will manifest in Doom — the benchmark spread is far tighter than any framerate delta the game could reveal. The data shows the CPU is never the limiting factor here; at 1080p, where CPU limits typically appear first, the combo still pushes 330 fps on Low and 243 fps on High.

One note on platform flexibility: the 8945HX ships with an unlocked multiplier, so headroom exists for users who want it, and the integrated Radeon 610M provides a fallback display path. Neither affects the measured Doom results.

GPU Role

The NVIDIA GeForce RTX 5090 Mobile is the rendering muscle of this pairing. It uses the GB203 chip on the Blackwell 2.0 architecture, built at TSMC on a 5 nm process, packing 45,600 million transistors into a 378 mm² die — a density of 120.6M transistors per square millimetre. The shader array counts 10496 shading units, 328 texture mapping units, 112 render output units, 82 RT cores, and 328 tensor cores. Peak rates work out to 169.7 GPixel/s pixel fill, 496.9 GTexel/s texture fill, and 31.80 TFLOPS of FP32 throughput.

Memory is the standout specification for a laptop GPU: 24 GB of GDDR7 on a 256-bit bus, running at 1750 MHz for 28 Gbps effective speed, delivering 896.0 GB/s of bandwidth. Clocks are 990 MHz base and 1515 MHz boost, with a 95 W TDP and a PCIe 5.0 x16 bus interface. API support covers DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 — and that Vulkan support is directly relevant, since Doom's engine path leans on low-overhead APIs.

In database terms the RTX 5090 Mobile sits in the 84th percentile of all GPUs with an average score of 45152. The nearestRivals list is eclectic: the AMD Radeon Pro 5500 XT at 45384 average (0.5 percent ahead), the NVIDIA GeForce RTX 4070 Ti at 44795 (which the mobile part beats by 0.8 percent), the Intel Arc A730M at 45592 (1 percent ahead), and the NVIDIA RTX 5880 Ada Generation at 45972 (1.8 percent ahead). Judged purely by composite score, the 5090 Mobile trades blows with desktop-class and professional parts. Its individual results — 5871 in 3DMark Steel Nomad (DX12), 201834 in Geekbench OpenCL, 198405 in Geekbench Vulkan, and 30034 in Passmark G3D — confirm substantial GPU compute capability.

For Doom specifically, what matters is that the GPU has roughly four times the pixel workload at 4K versus 1080p, and the measured rows show exactly the pattern a GPU-limited scenario produces: large framerate drops as resolution climbs, detailed in the next section. The 24 GB frame buffer is generous for a 2016 title; nothing in the data suggests VRAM pressure even at 3840x2160 Ultra, where the card still averages 70 fps.

Resolution Scaling

The scaling data is unambiguous. At Low settings, average framerates run 330 fps at 1920x1080, 214 fps at 2560x1440, and 116 fps at 3840x2160. Each resolution step cuts roughly a third of the framerate — 1080p to 1440p costs about 35 percent, and 1440p to 4K costs about 46 percent. High settings show the same shape: 243, 157, and 85 fps from lowest to highest resolution. Ultra follows with 198, 128, and 70 fps, and Medium with 287, 186, and 101 fps.

What does this say about the limiting component? When a CPU limits performance, framerates plateau as resolution rises, because the processor can only submit so many frames regardless of pixel count. That is not what happens here. The framerate scales down almost proportionally with pixel count across every preset, which means the RTX 5090 Mobile is the binding constraint at every resolution tested — including 1080p. Even the best result, 330 fps at 1080p Low, reflects a GPU still working hard rather than a Ryzen 9 8945HX running out of steam, given that the chip's single-thread credentials place it in the 95th CPU percentile.

The practical takeaway: dropping resolution buys framerate nearly linearly on this combo. A user moving from 4K High to 1440p High gains 72 frames per second on average. Moving from 1440p Ultra to 1080p Ultra adds 70. There is no evidence of a hard engine or API cap in the measured range.

Settings Recommendations

The four presets produce clearly separated tiers at every resolution. Consider 1440p, the most common target for a laptop display of this class: Low averages 214 fps, Medium 186, High 157, and Ultra 128. The gap between Low and Ultra is 86 fps — a 40 percent sacrifice in framerate for maximum visual fidelity.

The Medium row at 1440p includes the only minimum/maximum data in the set: 158 fps minimum, 214 fps maximum, bracketing the 186 fps average. That floor of 158 fps is the key number for a fast-paced FPS. It means Medium at 1440p never dips near a refresh-rate ceiling that would concern most players, and frametime consistency is implied by how tightly the min sits relative to the average.

For high-refresh displays, 1080p Medium is the sweet spot: a 287 fps average with a 244 fps minimum and 331 fps maximum. That combination is effectively matched to high refresh-rate panels. For image quality on a 4K panel, High at 4K averages 85 fps — comfortably playable — while 4K Ultra at 70 fps is the most demanding configuration measured and remains viable for players who prioritize fidelity. The data indicates Ultra is a defensible choice at 4K and 1440p (128 fps average), but at 1080p, where the pursuit is pure speed, High's 243 fps average outclasses Ultra's 198 without a visually meaningful penalty at that pixel density for a title of this vintage.

How This Combo Ranks

Across the database, the Ryzen 9 8945HX plus RTX 5090 Mobile pairing ranks 788th out of 3712 tested combinations in Doom. That places it in roughly the top fifth of tested pairings — consistent with a flagship mobile platform competing against a field that includes desktop configurations. Given that Doom dates to 2016 and rewards sustained single-thread throughput and raw GPU rasterization, both strengths of this combo, a top-quarter ranking is what the component percentiles (95th for the CPU, 84th for the GPU) would predict.

The rank also reflects the nature of the competition: combinations running newer, more demanding games would not be directly comparable, but within this title's leaderboard, this pairing's weakest showing is 4K Ultra at 70 fps — still a playable result by any standard. The ranking is measured, not estimated, per the dataset's dataIsMeasured flag.

Measured FPS Breakdown

All twelve measured rows, exactly as recorded:

3840x2160 (4K):

• Low — 116 fps average
• Medium — 101 fps average (min 86, max 116)
• High — 85 fps average
• Ultra — 70 fps average

2560x1440:

• Low — 214 fps average
• Medium — 186 fps average (min 158, max 214)
• High — 157 fps average
• Ultra — 128 fps average

1920x1080:

• Low — 330 fps average
• Medium — 287 fps average (min 244, max 331)
• High — 243 fps average
• Ultra — 198 fps average

The pattern is consistent at every resolution: each preset step down the quality ladder buys between roughly 13 and 35 percent more framerate, and the percentage cost of Ultra relative to Low is greatest at 4K (70 versus 116, about a 40 percent reduction) and 1080p (198 versus 330, the same proportional drop). The Medium rows are the only ones with minimum and maximum captures, and in each case the minimum sits close to the next-lower preset's average, suggesting well-behaved frametime distribution rather than erratic spikes.

FAQ

Q: Can this combo run Doom at 4K on maximum settings?

A: Yes. At 3840x2160 Ultra the measured average is 70 fps. It is the slowest configuration in the dataset but remains a playable result, and stepping down to 4K High lifts the average to 85 fps.

Q: Is the game CPU-limited or GPU-limited on this hardware?

A: GPU-limited at every tested resolution. Framerates fall nearly in proportion to pixel count as resolution rises — 330 to 214 to 116 fps on Low — which is the signature of a graphics-bound scenario. The 95th-percentile Ryzen 9 8945HX never appears to be the ceiling.

Q: How does the RTX 5090 Mobile compare to rival GPUs in the database?

A: By average benchmark score (45152) it essentially ties a mixed field: within 0.5 percent of the AMD Radeon Pro 5500 XT, 0.8 percent ahead of the NVIDIA GeForce RTX 4070 Ti, 1 percent behind the Intel Arc A730M, and 1.8 percent behind the NVIDIA RTX 5880 Ada Generation.

Q: Is 24 GB of VRAM necessary for Doom?

A: The data shows no indication of VRAM pressure. Even at 4K Ultra the card averages 70 fps, and the 896.0 GB/s of GDDR7 bandwidth on a 256-bit bus comfortably covers a 2016 title's demands.

Q: Which settings should be used for a high-refresh 1080p display?

A: 1080p Medium is the strongest fit: a 287 fps average with a 244 fps minimum and 331 fps maximum. 1080p Low goes higher still at 330 fps average, but Medium's floor already satisfies high-refresh playback.

Q: Where does this pairing rank among tested combos for this game?

A: Rank 788 out of 3712 tested combinations — roughly the top fifth of the field, consistent with the CPU's 95th-percentile and the GPU's 84th-percentile standing in the database.