SYSTEM ANALYZER

Rate My PC: AMD Ryzen 7 7840U + NVIDIA GeForce RTX 4090 Mobile

Get a comprehensive performance analysis of your gaming rig with detailed benchmarks, bottleneck detection, and upgrade recommendations

91 / 100
ULTIMATE READY

Apex Performer

Top 9% 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
87%
VS
GPU
96%
PROCESSOR

AMD Ryzen 7 7840U

25,432 Benchmark Score
Top 13% Market Ranking
View Full Specs →
GRAPHICS CARD

NVIDIA GeForce RTX 4090 Mobile

43,667 Benchmark Score
Top 4% Market Ranking
View Full Specs →

Market Position

How your build compares to others
Budget
0-30
Mid-Range
30-60
High-End
60-85
Enthusiast
85-100
Your Build

Game Performance Benchmarks

Real-world 4K FPS in popular titles
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Performance Insights

Tips to maximize your system

Optimal Performance

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

4K Gaming Ready

Consider a 4K 144Hz monitor to fully utilize your hardware capabilities.

Compatible Games See what you can play Compare CPUs Find upgrades Compare GPUs Find upgrades

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

This pairing combines a 28 W ultra-low-power APU with a flagship 120 W mobile GPU, creating one of the most unbalanced yet technically fascinating laptop configurations in the database. The AMD Ryzen 7 7840U is designed for efficiency with its 4 nm Zen 4 architecture, while the NVIDIA GeForce RTX 4090 Mobile is a 45,900 million transistor behemoth built for maximum rendering throughput. Because no measured FPS data exists for this exact combination, all gaming performance figures discussed in this analysis are estimates derived from the individual CPU and GPU benchmark scores, not from direct frame rate captures.

Gaming Performance

The FACT PACK contains no measured FPS rows for the AMD Ryzen 7 7840U + NVIDIA GeForce RTX 4090 Mobile combination. The `measuredFpsUltraByGame` field is empty, and `dataIsMeasured` is false. Consequently, any FPS figures presented here are qualitative estimates based on the GPU's compute capabilities and the CPU's single-thread performance, not empirical results from game testing.

The RTX 4090 Mobile's PassMark G3D score of 27212 places it in the 84th percentile of all GPUs, which indicates it can handle modern titles at high settings. The GPU's 32.98 TFLOPS FP32 compute and 576.0 GB/s memory bandwidth suggest strong 1440p and 4K potential. However, the CPU's single-thread score of 932 in 3DMark and 1677.5 in Cinebench R23 single-core will likely limit frame rates in CPU-bound scenarios. For esports titles like Counter-Strike or Valorant, the CPU's 5.10 GHz boost clock and PassMark single-thread score of 3565 suggest the system could push very high frame rates at 1080p, but the exact numbers remain estimates. For AAA single-player games, the GPU's 76 RT cores and 304 tensor cores would enable ray tracing and DLSS, but the CPU's modest 8-core, 16-thread configuration at 28 W TDP may struggle to feed the GPU in scenes with many physics objects or AI characters.

At 4K resolution, the GPU's 16 GB GDDR6 memory on a 256-bit bus becomes the dominant factor. The 576.0 GB/s bandwidth is more than sufficient for high-resolution textures, and the 112 ROPs provide solid pixel throughput. The CPU bottleneck diminishes at higher resolutions because frame times increase, giving the 7840U more time to prepare frames. At 1080p, the situation reverses, and the CPU's single-thread performance of 932 in 3DMark single-thread becomes the primary limiter, potentially capping FPS below what the GPU could otherwise deliver. The Radeon 780M integrated graphics are present but irrelevant when the discrete RTX 4090 Mobile is active.

FAQ

Q: Does the Ryzen 7 7840U bottleneck the RTX 4090 Mobile in gaming?

A: Benchmark data indicates a significant performance gap. The CPU sits in the 77th percentile of all CPUs with an average score of 25432, while the GPU is in the 84th percentile with an average score of 43667. In CPU-heavy workloads at lower resolutions, the 7840U's single-thread score of 932 in 3DMark will likely limit frame rates, but at higher resolutions the GPU becomes the primary bottleneck.

Q: What type of memory does this CPU support?

A: The AMD Ryzen 7 7840U supports DDR5 memory in a dual-channel configuration, providing 89.6 GB/s of memory bandwidth. It also supports ECC memory, which is unusual for a mobile processor.

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

A: The RTX 4090 Mobile has an average benchmark score of 43667, which is 0.9% higher than the NVIDIA RTX A6000's score of 44075. This places the mobile GPU slightly ahead of the professional workstation card in aggregate benchmarks.

Q: Is the Ryzen 7 7840U competitive with desktop processors?

A: The CPU's average benchmark score of 25432 is nearly identical to the Intel Core i7-11700KF, which scores 25423 with a deltaPct of 0. This means the 28 W mobile chip matches a desktop processor from a previous generation in multi-threaded workloads.

Q: What is the thermal design power of each component?

A: The CPU has a TDP of 28 W, which is exceptionally low for an 8-core processor. The GPU has a TDP of 120 W, making the combined thermal envelope approximately 148 W before considering other system components.

Q: Does the GPU support modern graphics APIs?

A: Yes, the RTX 4090 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. This ensures compatibility with all current game engines and modern rendering techniques.

Q: What is the combined performance percentile for this build?

A: The combined percentile for this CPU+GPU pairing is 81, indicating it outperforms 81% of all recorded system configurations in the database.

Benchmark Performance

The CPU's multi-threaded performance is respectable for its power class. In Cinebench R23, it scores 12719 points in multi-core and 1677.5 in single-core. The Geekbench scores of 8766 multi-core and 2077 single-core further confirm its position. The 3DMark results show scaling from 1729 in 2-thread to 5427 in 16-thread tests, with the max-thread score of 5402 being only slightly lower, indicating efficient thread utilization across the 8 cores and 16 threads.

The GPU's benchmark results are dominated by its compute capabilities. The Geekbench OpenCL score of 180831 and Vulkan score of 170774 demonstrate strong general-purpose compute and graphics performance. The PassMark G3D score of 27212 places it in the 84th percentile of all GPUs, with the nearest rival being the NVIDIA RTX A6000 at a deltaPct of -0.9. The GPU's PassMark G2D score of 984 is relatively low, reflecting its mobile nature and lack of desktop-oriented 2D optimizations.

The combined picture shows a system where the GPU vastly outperforms the CPU in raw compute. The GPU's average benchmark score of 43667 is 72% higher than the CPU's 25432. This disparity means the system is heavily GPU-bound in graphics workloads but CPU-limited in physics, AI, and simulation tasks. The combined percentile of 81 reflects the GPU's high standing pulling up the overall score, but the CPU's 77th percentile position prevents the system from reaching higher tiers.

Usage Scenarios

High-Refresh Gaming: At 1080p with a high-refresh display, the CPU's single-thread performance of 932 in 3DMark single-thread and 3565 in PassMark single-thread will likely cap frame rates below 200 FPS in many titles. The GPU's 27212 PassMark G3D score is more than capable of exceeding 200 FPS in esports, but the CPU cannot keep up, making this configuration suboptimal for competitive gaming at low resolutions.

Streaming: The CPU has 8 cores and 16 threads, which can handle software encoding while gaming. The PassMark data compression score of 288604 and data encryption score of 17691 indicate strong throughput for stream encoding tasks. However, the GPU's NVENC encoder, part of the Ada Lovelace architecture with 304 tensor cores, would offload this work more efficiently, leaving CPU headroom for game logic.

Video Editing: The GPU's 32.98 TFLOPS FP32 compute and 16 GB VRAM make it excellent for GPU-accelerated effects and rendering in applications like Premiere Pro or DaVinci Resolve. The CPU's Cinebench R23 multi-core score of 12719 provides adequate performance for timeline scrubbing and export, though it is not class-leading.

3D Rendering: The GPU's 9728 shading units and 76 RT cores deliver strong ray-traced rendering performance. The PassMark GPU compute score of 12347 indicates solid compute throughput for Blender or Octane workloads. The CPU's 5402 3DMark max-thread score will handle scene preparation but may slow down complex physics simulations during rendering.

Software Development: The CPU's 8 cores and 16 threads with a 5.10 GHz boost clock provide responsive compilation times. The PassMark integer math score of 90852 and floating point math score of 51767 show balanced arithmetic performance. The 16 GB L3 cache (shared) helps with frequently accessed code and data.

Student and Office Work: The 28 W TDP means excellent battery life potential in a laptop, and the Radeon 780M integrated graphics can handle office tasks without engaging the power-hungry RTX 4090 Mobile. The Geekbench multi-core score of 8766 ensures smooth multitasking across documents, browsers, and productivity applications.

CPU Analysis

The AMD Ryzen 7 7840U is an 8-core, 16-thread processor based on the Zen 4 architecture, codenamed Phoenix. It is manufactured on TSMC's 4 nm process with 25,000 million transistors on a 178 mm² die. The base clock of 3.30 GHz boosts to 5.10 GHz, which is impressive for a 28 W TDP part. The CPU supports DDR5 memory in dual-channel configuration with 89.6 GB/s bandwidth, and it features a 16 MB shared L3 cache plus 1 MB L2 per core.

Benchmark results show the CPU performs at the level of an Intel Core i7-11700KF, with an average score of 25432 versus 25423 for the rival, a deltaPct of 0. The 3DMark scores reveal strong scaling from 1729 in 2-thread to 5427 in 16-thread tests, indicating good multi-threading efficiency. The Cinebench R23 multi-core score of 12719 and single-core of 1677.5 place it in the 77th percentile of all CPUs. The PassMark multi-thread score of 24782 and single-thread of 3565 confirm its position as a mid-to-high-tier mobile processor.

The 28 W TDP is the defining characteristic of this chip. It allows for thin-and-light laptop designs while still delivering desktop-class multi-threaded performance from the previous generation. The 4 nm process and TSMC foundry enable this efficiency, but the low power envelope means sustained all-core workloads will likely see clock reductions. The 5.10 GHz boost clock is achievable only in short bursts, making single-threaded tasks like web browsing and office work feel snappy, while extended rendering tasks may settle at lower clocks.

Who Should Build It

This configuration targets a niche audience: users who want maximum GPU performance in a laptop form factor but do not require top-tier CPU performance. Gamers playing at 1440p or 4K will benefit most, as the GPU's 16 GB VRAM and 576.0 GB/s bandwidth shine at high resolutions where the CPU bottleneck is less pronounced. Content creators using GPU-accelerated applications like video editors or 3D renderers will appreciate the RTX 4090 Mobile's 32.98 TFLOPS compute and 76 RT cores.

Developers working on large codebases will find the 8-core, 16-thread CPU adequate for compilation, though not exceptional. The PassMark integer math score of 90852 provides enough throughput for most build pipelines. Students and office workers would be better served by a less powerful GPU, as the RTX 4090 Mobile's 120 W TDP and the associated cooling requirements make this a heavy, power-hungry laptop that sacrifices portability. Small business workstations running GPU-accelerated workloads like CAD or data visualization would benefit from the 16 GB VRAM, but the 28 W CPU may become a bottleneck in CPU-heavy simulations.

The combined percentile of 81 means this system outperforms most configurations, but the disparity between CPU and GPU performance creates a lopsided experience. Users who primarily play CPU-bound games at 1080p with high refresh rates will be disappointed, while those who prioritize GPU-intensive workloads at high resolutions will be satisfied.

Balance and Bottleneck

The performance data reveals a severe imbalance between the CPU and GPU. The GPU's average benchmark score of 43667 is 72% higher than the CPU's 25432. In gaming, this means the GPU is the limiting factor at high resolutions (1440p and above) where pixel throughput dominates, but the CPU becomes the bottleneck at 1080p and lower resolutions where frame preparation time is critical.

Evidence from the 3DMark scores supports this analysis. The CPU's single-thread score of 932 and 2-thread score of 1729 are modest compared to desktop processors, and the PassMark single-thread score of 3565 falls below what high-refresh gaming requires for sustained 240+ FPS. The GPU's PassMark G3D score of 27212 and DirectX 12 score of 107 indicate it can render frames far faster than the CPU can issue draw calls.

In productivity workloads, the bottleneck shifts. The GPU's 12347 PassMark GPU compute score accelerates rendering and compute tasks, but the CPU's 28 W TDP limits sustained multi-core performance. The Cinebench R23 multi-core score of 12719 is achieved under short bursts; prolonged workloads like video encoding may see reduced scores due to thermal throttling. The 89.6 GB/s memory bandwidth of the CPU is also a constraint, as the GPU's 576.0 GB/s bandwidth is 6.4 times higher, meaning data transfers between CPU and GPU could create stalls in mixed workloads.

Build Overview

This is a laptop-class build combining the AMD Ryzen 7 7840U, a 7000-series mobile processor on the Zen 4 architecture, with the NVIDIA GeForce RTX 4090 Mobile, a GeForce 40-series mobile GPU on the Ada Lovelace architecture. The build class is explicitly "laptop," and the combined percentile of 81 places it in the upper quintile of all recorded configurations.

The pairing is unusual because the CPU is optimized for ultra-low power consumption at 28 W, while the GPU is a flagship mobile part drawing 120 W. This creates a system that excels in GPU-bound tasks but underperforms in CPU-bound scenarios. The overall tier from the percentiles is solidly above average, with the CPU at 77th percentile and GPU at 84th percentile, but the gap between the two components prevents this from being a top-tier workstation or gaming machine.

The CPU's nearest rivals include the Intel Core i7-11700KF, AMD Ryzen 7 5825U, and AMD Ryzen 5 7640U, all within 0.3% of its average score. The GPU's nearest rivals are the NVIDIA Quadro M6000 and RTX A6000, with the RTX 4090 Mobile leading by 0.8-0.9%. This indicates the GPU is competitive with professional workstation cards, while the CPU matches a previous-generation desktop part.

GPU Analysis

The NVIDIA GeForce RTX 4090 Mobile is built on the AD103 chip using a 5 nm process at TSMC, containing 45,900 million transistors on a 379 mm² die. It has 16 GB of GDDR6 memory on a 256-bit bus, providing 576.0 GB/s of bandwidth. The GPU runs at a base clock of 1335 MHz and boosts to 1695 MHz, with memory clocked at 2250 MHz (18 Gbps effective).

The GPU features 9728 shading units, 304 TMUs, and 112 ROPs. It has 76 RT cores for ray tracing and 304 tensor cores for AI acceleration. The FP32 compute of 32.98 TFLOPS and FP16 of 32.98 TFLOPS (1:1 ratio) indicate balanced compute capabilities. The pixel rate of 189.8 GPixel/s and texture rate of 515.3 GTexel/s support high-resolution rendering.

Benchmark results show the GPU performs at the level of professional workstation cards. Its average score of 43667 is 0.8% higher than the NVIDIA Quadro M6000 (43301) and 0.9% higher than the RTX 5050 Mobile (43268). The Geekbench OpenCL score of 180831 and Vulkan score of 170774 demonstrate strong compute and graphics throughput. The PassMark G3D score of 27212 places it in the 84th percentile, making it suitable for demanding rendering workloads, 3D modeling, and GPU-accelerated compute tasks. The 120 W TDP with an IGP slot width and no power connectors indicates this is designed for laptops with dedicated cooling solutions.

Upgrade Path and Platform

The AMD Ryzen 7 7840U uses the AMD Socket FP8, which is a mobile-specific socket. This limits CPU upgradeability, as FP8 is soldered to the motherboard in most laptop designs. The CPU supports DDR5 memory in dual-channel configuration, providing 89.6 GB/s bandwidth, and supports ECC memory for error-correcting applications. The PCIe interface is Gen 4 with 20 lanes available from the CPU, which is sufficient for the RTX 4090 Mobile's PCIe 4.0 x16 bus interface.

The GPU's TDP is 120 W, and the combined CPU+GPU TDP is 148 W. The suggested PSU field is null, meaning no specific power supply recommendation exists in the database. For a laptop, this is less relevant, but for a potential external GPU enclosure setup, a power supply capable of handling the 120 W GPU plus system overhead would be necessary. The CPU's memory bandwidth of 89.6 GB/s may become a limiting factor if the GPU needs to frequently access system memory, though the 16 GB VRAM reduces this dependency.

A sensible next upgrade would be to replace the CPU with a higher-TDP mobile processor, but the FP8 socket and 28 W thermal design make this impractical. Alternatively, users could pair the RTX 4090 Mobile with a desktop-class CPU in an external GPU setup, but the mobile GPU's IGP slot width complicates this. The platform is effectively locked, so the most practical upgrade path is to increase system RAM to maximize the dual-channel DDR5 bandwidth, or to use the Radeon 780M integrated graphics for low-power tasks to extend battery life, reserving the RTX 4090 Mobile for demanding workloads.