SYSTEM ANALYZER

Rate My PC: AMD Ryzen 5 8645HS + NVIDIA GeForce RTX 4090 Mobile

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PROCESSOR (CPU)

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GRAPHICS CARD (GPU)

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93 Score

Top 7% Ranking

93 / 100

ULTIMATE READY

Apex Performer

Top 7% of systems. Capable of 4K Ultra gaming and advanced rendering.

4K 60+ FPSVR ReadyRay Tracing

System Balance Analysis

CPU vs GPU performance ratio

Well Balanced

CPU

90%

GPU

96%

PROCESSOR

AMD Ryzen 5 8645HS

33,244 Benchmark Score

Top 10% Market Ranking

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GRAPHICS CARD

NVIDIA GeForce RTX 4090 Mobile

43,667 Benchmark Score

Top 4% Market Ranking

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Market Position

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Budget

0-30

Mid-Range

30-60

High-End

60-85

Enthusiast

85-100

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Optimal Performance

Your system is in the top tier. You can run any modern game at maximum settings.

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Performance Tiers Explained

90-100

Ultimate

4K Ultra gaming, VR ready, ray tracing enabled, professional workloads

4K 60+ FPS VR Ready

70-89

High-End

1440p Ultra or 4K High settings, excellent for modern AAA titles

1440p Ultra 4K High

50-69

Mid-Range

1080p Ultra or 1440p Medium, great value for most gamers

1080p Ultra 1440p Med

30-49

Entry Level

1080p Medium settings, suitable for eSports and older titles

1080p Med eSports

0-29

Legacy

Basic gaming, older titles, consider upgrading for modern games

720p-1080p Low Older Games

# AMD Ryzen 5 8645HS + NVIDIA GeForce RTX 4090 Mobile

This analysis covers a laptop-class pairing of AMD's Ryzen 5 8645HS processor with NVIDIA's GeForce RTX 4090 Mobile GPU. The CPU sits in the 83rd percentile among all processors, while the GPU ranks in the 84th percentile among all GPUs, giving the combination a combined percentile of 84. No measured FPS data exists for this exact CPU+GPU pairing, so all game performance figures discussed here are estimates derived from the benchmark scores and hardware specifications in the FACT PACK.

GPU Analysis

The NVIDIA GeForce RTX 4090 Mobile is built on the Ada Lovelace architecture using TSMC's 5 nm process, housing 45,900 million transistors on a 379 mm² die. The GPU features 9,728 shading units, 304 texture mapping units, and 112 raster operation pipelines. Memory consists of 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth at an effective 18 Gbps memory speed. The chip operates at a base clock of 1335 MHz with a boost clock of 1695 MHz.

Ray tracing hardware includes 76 dedicated RT cores, while 304 tensor cores handle AI-accelerated workloads. The GPU achieves a pixel rate of 189.8 GPixel/s and a texture rate of 515.3 GTexel/s. Compute performance reaches 32.98 TFLOPS for both FP32 and FP16 operations, with the FP16 figure running at a 1:1 ratio with FP32 — this indicates strong raw compute capability for both traditional graphics and compute-heavy tasks.

The GPU benchmarks show a PassMark G3D score of 27,212, which places it in the 84th percentile of all GPUs. Its average benchmark score of 43,667 sits remarkably close to the NVIDIA Quadro M6000 (43,301, a 0.8% delta) and the NVIDIA GeForce RTX 5050 Mobile (43,268, a 0.9% delta), while trailing the NVIDIA RTX A6000 (44,075) by just 0.9%. The PassMark GPU compute score of 12,347 further substantiates the GPU's compute-oriented capabilities. Geekbench scores include 180,831 in OpenCL and 170,774 in Vulkan, indicating strong cross-API performance for both general-purpose compute and graphics workloads.

For rendering, the combination of 16 GB VRAM and 576.0 GB/s bandwidth means the GPU can handle large textures and complex scenes without memory swapping. The 76 RT cores provide hardware-accelerated ray tracing, while the 304 tensor cores enable DLSS and other AI-based rendering features. The 32.98 TFLOPS FP32 throughput supports demanding compute shaders and real-time effects at high resolutions.

Benchmark Performance

The CPU delivers a Cinebench R23 multi-core score of 13,220 and a single-core score of 1,714. In Cinebench R15, it scores 2,094 multi-core and 270 single-core. PassMark results show a multi-thread score of 22,586, single-thread score of 3,653, and an average benchmark score of 33,244. This places the CPU in the 83rd percentile among all processors.

The CPU's nearest rivals illustrate its positioning: the Intel Core i7-14701E scores 33,206 (a 0.1% delta), the AMD Ryzen 9 PRO 6950H scores 33,201 (0.1% delta), the Intel Core i5-12600HX scores 33,375 (-0.4% delta), and the AMD Ryzen 7 7745HX scores 33,091 (0.5% delta). These deltas are all within one percentage point, meaning the Ryzen 5 8645HS trades blows with a set of both newer and older competing parts across different market tiers.

The GPU's average benchmark score of 43,667, combined with its 84th percentile ranking, shows it performing essentially on par with the Quadro M6000 and RTX 5050 Mobile, while slightly underperforming the RTX A6000 by less than a single percentage point. The combined system percentile of 84 indicates that both components are well-matched in their relative performance tiers — neither component dramatically outperforms or underperforms the other in the context of their respective product universes.

The PassMark data compression score of 265,483 and encryption score of 15,588 suggest strong data handling capabilities. Floating point math scores 44,833, integer math scores 72,640, and extended instructions score 20,003. Prime number finding scores 75, physics scores 1,095, and random string sorting scores 31,748. These varied workloads paint a picture of a balanced CPU that handles both integer-heavy and floating-point-heavy tasks competently.

Balance and Bottleneck

The combined percentile of 84, with both CPU and GPU each sitting in the 83rd and 84th percentiles respectively, indicates a well-balanced pairing where neither component is a clear limiting factor at the system level. The GPU's nearest rival deltas (ranging from -0.9% to +0.9%) and the CPU's rival deltas (ranging from -0.4% to +0.5%) both cluster tightly around zero, suggesting both components perform in line with their expected tier.

However, in gaming workloads, the balance shifts by resolution. The GPU's 16 GB VRAM and 576.0 GB/s bandwidth, combined with its 84th percentile standing, mean it can push high frame rates at 1440p and 4K resolutions. The CPU's single-core score of 1,714 in Cinebench R23 and 3,653 in PassMark single-thread tests indicate it can feed the GPU adequately in most scenarios, but in CPU-bound titles or at lower resolutions where frame rates climb very high, the 6-core/12-thread processor may become the limiting factor.

The CPU's multi-thread score of 13,220 in Cinebench R23 shows it is not a top-tier multi-core part — it trails the Ryzen 7 7745HX by 0.5% and the i7-14701E by 0.1% in average score, but those are also not flagship parts. For GPU-bound workloads like 4K gaming or heavy ray tracing, the RTX 4090 Mobile will be the primary driver. For CPU-bound tasks like physics simulation or high-refresh 1080p gaming, the Ryzen 5 8645HS will be the constraint.

The 45 W TDP of the CPU versus the 120 W TDP of the GPU also indicates the thermal and power envelope is heavily weighted toward the graphics side. This is typical for gaming laptops, where the GPU consumes the majority of the power budget and the CPU operates within a more modest allocation.

Usage Scenarios

High-refresh gaming: The RTX 4090 Mobile's 84th percentile ranking and 32.98 TFLOPS FP32 compute suggest strong capability for high-refresh gaming at 1440p and 4K, though the CPU's single-core performance may limit maximum frame rates in less GPU-intensive titles.

Streaming: The GPU's 304 tensor cores and 76 RT cores provide hardware acceleration for encoding and AI-based features, while the CPU's 12 threads and 83rd percentile standing handle concurrent encoding, gaming, and streaming overhead adequately.

Video editing: The GPU's 16 GB VRAM and 576.0 GB/s bandwidth accelerate timeline rendering and effects, while the CPU's Cinebench R23 multi-core score of 13,220 handles export and encoding tasks reasonably, though it is not a top-tier multi-core part.

3D rendering: The GPU's 27,212 PassMark G3D score and 12,347 GPU compute score indicate strong real-time and offline rendering capability, with the CPU's 16 MB shared L3 cache and 6 cores providing adequate scene preparation and physics computation.

Software development: The CPU's PassMark integer math score of 72,640 and data encryption score of 15,588 support compilation, code analysis, and cryptographic operations, while the GPU's compute capabilities accelerate parallel workloads like machine learning inference.

Student and office work: The CPU's 83rd percentile ranking and single-thread score of 3,653 handle everyday productivity tasks with ease, while the GPU's power is largely unnecessary for such workloads but available for occasional creative or compute tasks.

FAQ

Q: What is the combined performance percentile of this CPU and GPU pairing?

A: The combined percentile is 84, with the CPU at the 83rd percentile and the GPU at the 84th percentile.

Q: How does the RTX 4090 Mobile compare to the NVIDIA RTX A6000?

A: The RTX 4090 Mobile has an average benchmark score of 43,667, which is 0.9% lower than the RTX A6000's score of 44,075.

Q: What is the memory configuration of the RTX 4090 Mobile?

A: The GPU features 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth and an effective 18 Gbps memory speed.

Q: What are the CPU's Cinebench R23 scores?

A: The Ryzen 5 8645HS scores 13,220 in multi-core and 1,714 in single-core tests.

Q: Which CPU rival is closest in average benchmark score?

A: The AMD Ryzen 9 PRO 6950H scores 33,201, just 0.1% below the Ryzen 5 8645HS's 33,244 average.

Q: Does the CPU have ECC memory support?

A: No, the Ryzen 5 8645HS does not support ECC memory.

Q: What is the GPU's PassMark G3D score?

A: The RTX 4090 Mobile scores 27,212 in PassMark G3D, placing it in the 84th percentile of all GPUs.

Gaming Performance

No measured FPS data exists for this exact CPU+GPU combination; the following figures are estimates based on the benchmark scores and hardware specifications. The RTX 4090 Mobile's 84th percentile GPU ranking and 16 GB VRAM suggest strong capability for 4K gaming at high settings. The GPU's 32.98 TFLOPS FP32 compute and 576.0 GB/s bandwidth point to smooth performance in GPU-bound titles at 1440p and 4K resolutions.

In less demanding esports titles, the CPU's single-core score of 1,714 in Cinebench R23 and 3,653 in PassMark may become the limiting factor at 1080p, where high frame rates depend heavily on processor performance. The GPU's 189.8 GPixel/s pixel rate suggests robust fill-rate performance for high-resolution rendering, while the 515.3 GTexel/s texture rate indicates strong texture-heavy scene handling.

For ray-traced games, the 76 RT cores provide dedicated hardware acceleration, though the exact frame rate impact depends on the specific game's ray tracing implementation. The 304 tensor cores enable DLSS, which can substantially boost frame rates in supported titles by rendering at lower internal resolutions and upscaling. The 16 GB VRAM capacity ensures that even games with large texture packs and high-resolution assets will fit within memory, avoiding stutter from VRAM overflow.

Who Should Build It

This pairing targets gamers who want desktop-class graphics performance in a laptop form factor. The RTX 4090 Mobile's 84th percentile ranking and 16 GB VRAM make it suitable for 4K gaming, while the CPU's 83rd percentile standing handles most gaming workloads without significant compromise. Content creators working with video editing or 3D rendering will benefit from the GPU's compute capabilities and VRAM capacity, though the CPU's 6-core configuration may be a limiting factor for heavily multi-threaded workloads.

Software developers working on graphics-intensive applications or machine learning projects will find the GPU's 304 tensor cores and 32.98 TFLOPS FP16 compute valuable for acceleration. Students and professionals who need a machine for demanding coursework or small business workstations that occasionally handle GPU-accelerated tasks will find the system capable, though the power and thermal envelope of the RTX 4090 Mobile at 120 W TDP means this is not a lightweight or battery-focused device.

Build Overview

This is a laptop-class build combining the AMD Ryzen 5 8645HS, a 6-core/12-thread Zen 4 processor from the 8000 series (codenamed Hawk Point, built on TSMC's 4 nm process), with the NVIDIA GeForce RTX 4090 Mobile, an Ada Lovelace architecture GPU on TSMC's 5 nm process. The CPU has a 45 W TDP, while the GPU has a 120 W TDP, indicating a power distribution heavily weighted toward graphics.

The combined percentile of 84 places this system in the upper tier of laptop configurations. The CPU's average benchmark score of 33,244 and the GPU's average of 43,667 both rank in the low-to-mid 80s percentiles, meaning this is a high-performance pairing, though not at the absolute top of their respective product stacks — the CPU is a mid-range 6-core part, while the GPU is a flagship mobile graphics solution. The result is a system where the GPU clearly outclasses the CPU in relative performance within their product universes.

CPU Analysis

The AMD Ryzen 5 8645HS is a 6-core, 12-thread processor based on the Zen 4 architecture with the Hawk Point codename. It operates at a base clock of 4.30 GHz with a boost clock of 5.00 GHz, running on a 4 nm TSMC process with 25,000 million transistors on a 178 mm² die. The cache hierarchy includes 64 KB L1 per core, 1 MB L2 per core, and 16 MB of shared L3 cache. Memory support is DDR5 with a dual-channel bus providing 89.6 GB/s bandwidth.

The integrated Radeon 760M graphics provide a fallback display output, though in this pairing the discrete RTX 4090 Mobile handles all graphics duties. The CPU supports PCIe Gen 4 with 20 lanes from the CPU and is not multiplier-unlocked, meaning overclocking is not an option. Its production status is Active, with a release date of December 2023.

Benchmark results show a Cinebench R23 multi-core score of 13,220 and single-core of 1,714. PassMark multi-thread scores 22,586, with single-thread at 3,653. The average benchmark score of 33,244 places it in the 83rd percentile, with nearest rivals including the Intel Core i7-14701E (33,206, +0.1%), AMD Ryzen 9 PRO 6950H (33,201, +0.1%), Intel Core i5-12600HX (33,375, -0.4%), and AMD Ryzen 7 7745HX (33,091, +0.5%). In real workloads, the 6-core/12-thread configuration handles typical gaming, productivity, and moderate multi-threaded tasks competently, but the 16 MB L3 cache and 6 cores limit performance in heavily parallel workloads compared to higher-core-count parts.

Upgrade Path and Platform

The CPU uses the AMD Socket FP8, which is a mobile-specific socket with the CPU soldered to the motherboard, so processor upgrades are not feasible in the traditional sense. Memory support is DDR5 with a dual-channel configuration, and the integrated memory controller provides 89.6 GB/s of bandwidth. The CPU offers PCIe Gen 4 with 20 lanes, while the GPU connects via PCIe 4.0 x16.

The GPU has a 120 W TDP and no power connectors, indicating it is a mobile part soldered to the motherboard with power delivered through the board. No suggested PSU is listed, which is typical for laptop components. The system's upgrade path is therefore limited to memory and storage — adding more DDR5 RAM or upgrading to larger/faster NVMe drives over the PCIe Gen 4 interface.

For users seeking more performance, the practical upgrade would be to a different laptop entirely, as both the CPU and GPU are fixed components. The CPU's 45 W TDP and the GPU's 120 W TDP define the thermal envelope, and any future upgrade would need to consider the chassis cooling capacity. The GPU's successor is listed as the GeForce 50 Mobile, indicating the current 40-series will eventually be superseded, but within this system, the RTX 4090 Mobile already represents the top of its mobile GPU generation.

Rate My PC: AMD Ryzen 5 8645HS + NVIDIA GeForce RTX 4090 Mobile

Apex Performer

System Balance Analysis

AMD Ryzen 5 8645HS

NVIDIA GeForce RTX 4090 Mobile

Market Position

Game Performance Benchmarks

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

Performance Insights

Optimal Performance

4K Gaming Ready

Performance Tiers Explained

Ultimate

High-End

Mid-Range

Entry Level

Legacy

GPU Analysis

Benchmark Performance

Balance and Bottleneck

Usage Scenarios

FAQ

Gaming Performance

Who Should Build It

Build Overview

CPU Analysis

Upgrade Path and Platform

4K Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

1440p Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

1080p Gaming Performance

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

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