SYSTEM ANALYZER

Rate My PC: AMD Ryzen 5 7645HX + NVIDIA GeForce RTX 4090 Mobile

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Build Configuration

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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 7645HX

33,668 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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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 7645HX + NVIDIA GeForce RTX 4090 Mobile

This pairing combines a 6-core Zen 4 mobile processor with NVIDIA's flagship Ada Lovelace laptop GPU, creating a configuration that sits at the 84th percentile across all CPU and GPU combinations. The Ryzen 5 7645HX is a high-clock, power-efficient part from AMD's Dragon Range family, while the RTX 4090 Mobile delivers top-tier graphics compute in a laptop form factor. Benchmark data shows a system with strong single-threaded performance, excellent multi-core throughput for its class, and GPU scores that place it near the top of mobile graphics.

CPU Analysis

The AMD Ryzen 5 7645HX is built on the Zen 4 architecture using TSMC's 5 nm process node, with a transistor count of 6,570 million on a 71 mm² die. This 6-core, 12-thread processor operates with a base clock of 4.00 GHz and a boost clock of 5.00 GHz, making it one of the higher-clocked mobile parts in the 7000 series. The 45 W TDP classification suggests it is designed for performance laptops where thermal headroom allows sustained boost operation. Cache configuration includes 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3, providing ample data locality for compute-heavy workloads.

Benchmark results indicate strong single-thread performance for a mobile chip. The Cinebench R23 single-core score of 1809 and Geekbench single-core score of 2657 place this processor well above typical laptop CPUs, with the PassMark single-thread score of 3907 confirming its capability in lightly-threaded applications. Multi-threaded performance is equally respectable: Cinebench R23 multicore reaches 13985, while Geekbench multicore hits 11586. The PassMark multithread score of 26476 reflects the processor's ability to handle parallel workloads effectively.

The nearest rival comparisons show the Ryzen 5 7645HX sitting nearly exactly between AMD Ryzen 7 8840HS (0% delta) and AMD Ryzen 9 3900XT (-0.2%), with the AMD Ryzen 5 240 and Intel Core Ultra 7 255H each trailing by 0.4% in average benchmark score. This places the 7645HX in a very tight performance band where the 6-core Zen 4 design competes directly with 8-core and newer architectures. The 84th percentile ranking against all CPUs underscores that this is not merely a mid-range part but one that outperforms the majority of desktop and mobile processors.

For real workloads, the high boost clock of 5.00 GHz means responsive application launches and snappy single-threaded tasks such as web browsing, office productivity, and light coding. The 12 threads and 32 MB L3 cache support heavier compilation tasks, data compression, and encryption workloads. PassMark data compression score of 302256 and encryption score of 17900 suggest this CPU handles archival and security-related tasks with ease. Floating-point math at 48798 and integer math at 77432 indicate solid number-crunching for scientific and financial applications.

Benchmark Performance

The combined benchmark picture for this CPU+GPU pair is defined by the 84th percentile overall position. The CPU achieves an average benchmark score of 33668 across all tested workloads, while the GPU's average benchmark score reaches 43667. These are not directly comparable numbers due to different test suites, but they both indicate above-average performance within their respective categories.

In Cinebench R15, the multicore score of 2276 and single-core score of 289 demonstrate balanced scaling between single and multi-threaded execution. The Cinebench R23 scores of 13985 (multi) and 1809 (single) show a ratio of approximately 7.7:1 between multi and single-core performance, which is typical for a 6-core/12-thread part with high per-core clocks. Geekbench scores of 11586 (multi) and 2657 (single) confirm this ratio, suggesting efficient thread scheduling and minimal scaling overhead.

The GPU's benchmark scores are dominated by the Geekbench OpenCL result of 180831 and Vulkan score of 170774, both indicating strong compute capability. PassMark G3D score of 27212 places this GPU well above the majority of mobile graphics solutions. The PassMark GPU compute score of 12347 reflects the RTX 4090 Mobile's ability to handle general-purpose GPU workloads. DirectX 12 score of 107 and DirectX 11 score of 262 provide insight into gaming API performance, with the newer API showing expected scaling.

Against its nearest rivals, the RTX 4090 Mobile leads the NVIDIA Quadro M6000 by 0.8% and the RTX 5050 Mobile by 0.9%, while trailing the NVIDIA RTX A6000 by 0.9%. This tight clustering at the top of the GPU performance ladder means the 4090 Mobile is essentially at parity with professional workstation cards, a remarkable achievement for a laptop part. The GPU's 84th percentile ranking against all GPUs further solidifies its position as a top-tier mobile graphics solution.

GPU Analysis

The NVIDIA GeForce RTX 4090 Mobile is built on the Ada Lovelace architecture using TSMC's 5 nm process, with 45,900 million transistors on a 379 mm² die. The AD103 chip features 9,728 shading units, 304 texture mapping units, and 112 raster operation units. Clock speeds are set at 1335 MHz base and 1695 MHz boost, with memory running at 2250 MHz (18 Gbps effective). This configuration delivers 32.98 TFLOPS of FP32 compute and an equal 32.98 TFLOPS of FP16 (1:1 ratio), making it exceptionally capable for both gaming and compute workloads.

Memory configuration consists of 16 GB of GDDR6 on a 256-bit bus, providing 576.0 GB/s of bandwidth. This large frame buffer and high bandwidth are critical for 4K gaming, large texture sets, and GPU-accelerated rendering tasks. The pixel rate of 189.8 GPixel/s and texture rate of 515.3 GTexel/s indicate the GPU can sustain high fill rates in demanding scenes. Ray tracing capabilities are supported by 76 RT cores, while 304 tensor cores handle AI acceleration and DLSS workloads.

The GPU's 120 W TDP classification for a laptop part is notable, as it allows this mobile flagship to operate at clock speeds close to desktop variants in the same architecture. The PCIe 4.0 x16 bus interface provides adequate bandwidth for data transfer between CPU and GPU. API support includes DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, ensuring compatibility with the latest games and graphics applications.

In rendering workloads, the benchmark scores suggest the RTX 4090 Mobile excels at GPU-accelerated tasks. The Geekbench OpenCL score of 180831 indicates strong compute throughput for applications like Blender, DaVinci Resolve, and Adobe Premiere that leverage GPU acceleration. The Vulkan score of 170774 shows excellent performance in cross-platform graphics APIs, which is relevant for game development and scientific visualization. The PassMark G3D score of 27212 confirms this GPU handles traditional 3D rendering with ease, making it suitable for 3D modeling, animation, and architectural visualization.

Balance and Bottleneck

The balance between the Ryzen 5 7645HX and RTX 4090 Mobile creates an interesting dynamic where the CPU's 84th percentile ranking and the GPU's 84th percentile ranking are perfectly matched. This alignment suggests neither component dramatically outperforms the other in overall capability, though workload-specific bottlenecks can emerge.

In CPU-bound scenarios, the 6-core/12-thread design may limit performance in heavily multi-threaded applications that scale beyond 12 threads. The Cinebench R23 multicore score of 13985, while strong for a laptop, is lower than what 8-core or 16-thread parts achieve. For gaming at high frame rates, the single-thread performance of 1809 in Cinebench R23 is sufficient for most titles, but esports games at 1080p with extreme FPS targets may see CPU limitations before the GPU is fully utilized.

In GPU-bound scenarios, the RTX 4090 Mobile's 16 GB VRAM and 576.0 GB/s bandwidth make it unlikely to be the limiting factor in most games, even at 4K resolution. The GPU compute scores of 180831 (OpenCL) and 170774 (Vulkan) suggest this GPU can handle demanding ray tracing and DLSS workloads without dropping below playable frame rates. However, the 120 W TDP means sustained performance depends on the laptop's cooling solution, which is not reflected in benchmark scores.

The combined picture shows a system that is well-balanced for gaming at high resolutions where the GPU dominates, and for productivity workloads that benefit from both strong single-threaded CPU performance and massive GPU compute. For tasks like video encoding, the CPU's 12 threads and the GPU's tensor cores work in complementary fashion, with Quick Sync-style acceleration offloaded to the GPU. The tight clustering of CPU rivals (all within 0.4%) and GPU rivals (all within 0.9%) indicates that performance variability between similar configurations is minimal, making this pairing a stable and predictable choice.

FAQ

Q: How does the Ryzen 5 7645HX compare to the AMD Ryzen 7 8840HS?

A: The two processors have identical average benchmark scores, with the Ryzen 5 7645HX showing a 0% delta against the Ryzen 7 8840HS. This means the 6-core Zen 4 design matches the performance of the 8-core alternative in the average benchmark suite.

Q: What is the RTX 4090 Mobile's standing relative to professional GPUs?

A: The RTX 4090 Mobile trails the NVIDIA RTX A6000 by only 0.9% in average benchmark score, while leading the Quadro M6000 by 0.8% and the Quadro M6000 24 GB by 0.9%. This places it at parity with professional workstation cards.

Q: How much memory bandwidth does the RTX 4090 Mobile have?

A: The GPU provides 576.0 GB/s of memory bandwidth through a 256-bit bus with 16 GB of GDDR6 memory running at 2250 MHz (18 Gbps effective).

Q: Is the Ryzen 5 7645HX suitable for multi-threaded workloads?

A: Yes, with 12 threads and a Cinebench R23 multicore score of 13985, the processor handles parallel tasks effectively. PassMark multithread score of 26476 and integer math score of 77432 confirm strong multi-threaded compute capability.

Q: What API support does the RTX 4090 Mobile offer?

A: The GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, making it compatible with current and upcoming games and graphics applications.

Q: What is the CPU's power envelope?

A: The Ryzen 5 7645HX has a TDP of 45 W, which is typical for high-performance mobile processors designed for gaming and creator laptops.

Q: How does the CPU's single-thread performance compare to its multi-thread performance?

A: The Geekbench single-core score of 2657 versus multicore score of 11586 shows a ratio of approximately 4.4:1, which is typical for a 6-core/12-thread processor with high per-core clocks.

Upgrade Path and Platform

The Ryzen 5 7645HX uses the AMD Socket FL1, which is specific to the Dragon Range mobile platform. This socket supports DDR5 memory with dual-channel configuration, providing 83.2 GB/s of memory bandwidth. ECC memory is supported, which is a valuable feature for workstation-class laptops that handle critical data. The platform provides PCIe Gen 5 with 28 CPU lanes, ensuring high bandwidth for NVMe storage and future expansion. The integrated Radeon 610M graphics provide a fallback display output and power-saving option when the discrete GPU is not needed.

The RTX 4090 Mobile connects via PCIe 4.0 x16 and has a TDP of 120 W. The GPU's power connectors are listed as "None" because it is an integrated mobile part (slot width IGP), meaning it draws power through the motherboard rather than external connectors. The suggested PSU field is null, indicating that power supply requirements are determined by the laptop's internal power delivery system rather than a desktop PSU.

For upgrades, the primary constraint is the laptop form factor. The CPU is not upgradeable in most mobile designs, and the GPU is soldered to the motherboard. However, memory and storage can typically be upgraded. The DDR5 support with dual-channel configuration allows for memory expansion up to the laptop's maximum capacity, while PCIe Gen 5 lanes support the fastest NVMe SSDs available. The platform's support for ECC memory makes it suitable for error-sensitive workloads like financial modeling and scientific computing.

Given the 45 W CPU TDP and 120 W GPU TDP, the total system power draw is modest for the performance level. This leaves thermal headroom for sustained operation in a well-designed laptop chassis. The platform's active production status and 2023 release date mean driver support and BIOS updates should continue for the foreseeable future.

Usage Scenarios

High-refresh gaming: The RTX 4090 Mobile's 32.98 TFLOPS of FP32 compute and 16 GB VRAM enable high frame rates at 1440p and 4K resolutions. The CPU's 5.00 GHz boost clock ensures minimal frame pacing issues in CPU-bound titles, while the GPU's 576.0 GB/s bandwidth prevents texture streaming bottlenecks in open-world games.

Streaming: The combination of 12 CPU threads and 76 RT cores with 304 tensor cores provides ample headroom for simultaneous gaming and encoding. The GPU's Vulkan score of 170774 indicates strong performance in streaming applications that leverage GPU encoding, while the CPU's PassMark extended instructions score of 22969 supports software encoding fallbacks.

Video editing: The CPU's Geekbench multicore score of 11586 handles timeline scrubbing and effects processing, while the GPU's OpenCL score of 180831 accelerates rendering and export tasks. The 16 GB VRAM allows for large project files and multiple video layers without memory pressure.

3D rendering: The GPU's 32.98 TFLOPS of FP16 compute is well-suited for Blender Cycles and similar render engines. The CPU's Cinebench R23 multicore score of 13985 supports CPU-based rendering fallbacks, while the 32 MB L3 cache reduces data transfer overhead in complex scenes.

Software development: The CPU's single-thread score of 1809 in Cinebench R23 ensures fast compilation of small projects, while the 12 threads handle parallel builds efficiently. The PassMark find prime numbers score of 178 and data compression score of 302256 indicate solid performance in algorithmic and data-processing tasks.

Student and office work: The integrated Radeon 610M graphics allow for efficient battery-powered operation during note-taking and document editing, while the discrete GPU engages for more demanding tasks. The CPU's PassMark single-thread score of 3907 ensures responsive office applications, and the 45 W TDP contributes to reasonable battery life for a high-performance laptop.

Build Overview

This configuration pairs the AMD Ryzen 5 7645HX with the NVIDIA GeForce RTX 4090 Mobile in a laptop form factor. The CPU is a 6-core, 12-thread Zen 4 processor from the Dragon Range series, built on TSMC's 5 nm process with a 45 W TDP. The GPU is NVIDIA's flagship mobile part, featuring the AD103 chip with 9,728 shading units and 16 GB of GDDR6 memory on a 256-bit bus, delivering 576.0 GB/s of bandwidth. Both components sit at the 84th percentile in their respective categories, making this a high-end mobile workstation and gaming platform.

The combined percentile of 84 indicates that this pairing outperforms the majority of laptop configurations available on the market. The CPU's average benchmark score of 33668 and the GPU's average score of 43667 place both components in the upper tier of their classes. The tight clustering of nearest rivals for both CPU and GPU suggests that performance is consistent and predictable, with no significant outliers in either direction.

Who Should Build It

This CPU+GPU pairing targets users who need desktop-class performance in a portable form factor. Gamers seeking high frame rates at 1440p or 4K resolution will benefit from the RTX 4090 Mobile's 16 GB VRAM and 576.0 GB/s bandwidth, which handle the largest texture packs and highest detail settings without compromise. The CPU's 5.00 GHz boost clock ensures that even the most demanding game logic runs smoothly, while the 12 threads support background tasks like Discord and streaming software.

Content creators working with video, 3D rendering, or large image files will find the combination of 12 CPU threads and 32.98 TFLOPS of GPU compute well-suited to their workflows. The 16 GB VRAM allows for large project files and GPU-accelerated effects, while the CPU's 32 MB L3 cache reduces bottlenecks in data-intensive tasks. The ECC memory support makes this platform suitable for professionals who require data integrity in financial, scientific, or engineering applications.

Software developers will appreciate the CPU's strong single-thread performance for IDE responsiveness and the multi-thread capability for parallel builds. The GPU's compute scores support machine learning experimentation and CUDA-based development. Students and small business users who need a single machine for both productivity and entertainment will find this configuration offers headroom for years of use, with the integrated graphics providing an efficient fallback for battery-conscious tasks.

Gaming Performance

No measured FPS data exists for this exact CPU+GPU combination, as the FACT PACK contains no measuredFps entries. All frame rate discussions below are estimates based on the benchmark scores and should be treated as approximations rather than verified results.

Based on the GPU's PassMark G3D score of 27212 and DirectX 12 score of 107, this system is estimated to deliver high frame rates at 1080p and 1440p in most modern titles. At 4K resolution, the 16 GB VRAM and 576.0 GB/s bandwidth suggest playable frame rates in demanding games, particularly with DLSS enabled given the 304 tensor cores. The CPU's single-thread performance of 3907 in PassMark single-thread ensures that frame pacing remains consistent even in CPU-intensive scenes.

For esports titles, the combination of 5.00 GHz CPU boost clock and the GPU's 189.8 GPixel/s pixel rate indicates the system can sustain very high frame rates at 1080p, likely exceeding 144 FPS in competitive shooters. In AAA games, the GPU's 32.98 TFLOPS of compute power suggests smooth performance at 1440p with high settings, with 4K requiring some settings adjustments or upscaling. Ray tracing workloads benefit from 76 RT cores, with performance expected to be strong but with some frame rate impact compared to rasterized rendering.

These estimates are grounded in the benchmark scores but should be validated with real-world testing. The absence of measured FPS data means that actual gaming performance could vary based on laptop cooling, power limits, and driver optimizations. Users should expect top-tier performance but verify specific game performance through reviews or community benchmarks before making purchasing decisions.

Rate My PC: AMD Ryzen 5 7645HX + NVIDIA GeForce RTX 4090 Mobile

Apex Performer

System Balance Analysis

AMD Ryzen 5 7645HX

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

CPU Analysis

Benchmark Performance

GPU Analysis

Balance and Bottleneck

FAQ

Upgrade Path and Platform

Usage Scenarios

Build Overview

Who Should Build It

Gaming Performance

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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