SYSTEM ANALYZER

Rate My PC: AMD Ryzen 9 7900X3D + AMD Radeon RX 6400

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

89 / 100
HIGH-END

Power Build

Top 11% of systems. Excellent for 1440p Ultra or 4K High gaming.

1440p Ultra4K High

System Balance Analysis

CPU vs GPU performance ratio
Well Balanced
CPU
94%
VS
GPU
83%
PROCESSOR

AMD Ryzen 9 7900X3D

47,908 Benchmark Score
Top 6% Market Ranking
View Full Specs →
GRAPHICS CARD

AMD Radeon RX 6400

6,001 Benchmark Score
Top 17% 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

Strong Performance

Excellent for 1440p gaming. Most games will run at high/ultra settings smoothly.

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

The AMD Ryzen 9 7900X3D and AMD Radeon RX 6400 represent a pairing of two distinctly different performance tiers: a high-end 12-core desktop processor designed for maximum compute throughput, and an entry-level graphics card aimed at basic rendering tasks and low-resolution gaming. The benchmark data shows a considerable disparity between the CPU's 90th percentile ranking and the GPU's 35th percentile ranking, which defines the performance boundaries of this system. Since no measured FPS data exists for this exact combination, all gaming performance analysis presented here is derived from the individual benchmark scores of each component, and these figures should be treated as estimates rather than empirical results.

CPU Analysis

The Ryzen 9 7900X3D is built on TSMC's 5 nm process node using the Zen 4 architecture, codenamed Raphael, and features 12 physical cores with 24 threads. It operates with a base clock of 4.40 GHz and a boost clock of 5.60 GHz, backed by a substantial cache hierarchy: 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 128 MB of shared L3 cache, which includes a dedicated 1x 64MB 3D V-Cache slice. With a TDP of 120 W and support for dual-channel DDR5 memory delivering 83.2 GB/s of bandwidth, this processor is positioned as a high-performance workstation and enthusiast part.

The benchmark results confirm the processor's strong multi-core capabilities. The Cinebench R23 multi-core score of 42,767 is particularly notable, representing the CPU's peak throughput under fully threaded workloads. The single-core score of 6,037 in the same test indicates solid per-thread performance, while the Geekbench scores of 18,808 (multi-core) and 2,456 (single-core) reinforce the balanced nature of the design. The 3DMark tests show a clear scaling pattern: 2,071 for 2 threads, 4,041 for 4 threads, 7,315 for 8 threads, 10,144 for 16 threads, and 11,480 for max threads, demonstrating that the processor scales effectively as thread counts increase, though the gains taper off slightly beyond 16 threads.

The PassMark suite provides additional insight into specialized workloads. The floating-point math score of 97,246 and integer math score of 160,779 indicate strong arithmetic performance, while the data encryption score of 35,293 and data compression score of 593,838 suggest the CPU handles security and archival tasks efficiently. The extended instructions score of 44,567 highlights the processor's ability to execute modern SIMD workloads. With an average benchmark score of 47,908, the CPU sits in the 90th percentile of all processors, with its nearest rival being the AMD Ryzen 9 3900 at a nearly identical score of 47,918 (0% delta), followed by the Intel Core Ultra 7 265T at 47,697 (0.4% ahead) and the AMD Ryzen AI Max PRO 380 at 48,171 (0.5% behind).

Gaming Performance

The FACT PACK contains no measured FPS rows for this exact CPU+GPU combination, so all gaming performance figures discussed here are estimates based on the individual benchmark scores of each component. The RX 6400's PassMark G3D score of 7,673 and 3DMark Steel Nomad DX12 score of 176 paint a clear picture of an entry-level GPU that will struggle at high settings, particularly in modern titles.

Given the GPU's 35th percentile ranking and the CPU's 90th percentile ranking, the system's gaming performance will be entirely constrained by the graphics card. At 1080p with ultra settings, the RX 6400's 4 GB of GDDR6 memory on a 64-bit bus with 128.0 GB/s bandwidth will likely produce playable but modest frame rates in esports and older titles, while newer AAA games will likely require significant settings reductions to achieve acceptable performance. The GPU's FP32 throughput of 3.565 TFLOPS and 768 shading units suggest it is suited for 720p or low-detail 1080p gaming rather than high-refresh or high-resolution scenarios.

The CPU's gaming potential is evidenced by its strong single-threaded performance, with a 3DMark single-thread score of 1,049 and a PassMark single-thread score of 4,126. These numbers indicate that the 7900X3D would not bottleneck a more powerful GPU in gaming scenarios, but in this pairing, the RX 6400's PassMark DirectX 12 score of 30 and DirectX 11 score of 70 make it the clear limiting factor. The data suggests that any gaming experience will be defined by the GPU's capabilities, with the CPU providing ample headroom that remains largely untapped in most gaming workloads.

Benchmark Performance

The CPU's benchmark performance is consistently strong across all tests. The Cinebench R15 multi-core score of 4,310 and single-core score of 608, along with the R20 scores of 17,962 (multi-core) and 2,535 (single-core), show a processor that delivers excellent performance in both lightly-threaded and heavily-threaded scenarios. The PassMark multi-thread score of 50,317 and physics score of 4,728 further reinforce the CPU's capability in demanding computational tasks, while the find prime numbers score of 445 and random string sorting score of 70,662 highlight its efficiency in specific algorithmic workloads.

The GPU's benchmark scores are modest across the board. The Geekbench OpenCL score of 32,011 and Vulkan score of 16,372 indicate basic compute capability, while the PassMark GPU compute score of 2,812 reflects limited compute throughput. The DirectX 9 score of 93 is the highest among the DirectX tests, with DirectX 10 at 54, DirectX 11 at 70, and DirectX 12 at 30, showing that the GPU performs relatively better in older APIs. The PassMark G2D score of 722 suggests adequate 2D desktop performance, but the overall average benchmark score of 6,001 places the GPU in the 35th percentile, with nearest rivals including the NVIDIA GeForce GTX 770M at 6,000 (0% delta) and the AMD FirePro W4100 at 5,987 (0.2% ahead).

The combined percentile for this pairing is 63, reflecting the significant gap between the CPU's high performance and the GPU's low performance. The combined picture is one of a system where the processor vastly outperforms the graphics card, creating a configuration that excels at non-graphics tasks but falls short in GPU-intensive applications.

Balance and Bottleneck

The benchmark data clearly identifies the RX 6400 as the primary bottleneck in this system. The CPU's 90th percentile ranking versus the GPU's 35th percentile ranking represents a substantial performance gap that will manifest in every GPU-bound workload. In gaming, the GPU's PassMark DirectX 12 score of 30 and 3DMark Steel Nomad DX12 score of 176 indicate that the graphics card will max out long before the CPU's potential is reached, leaving significant processor headroom unused.

The CPU's scaling data supports this analysis. The 3DMark multi-thread scores show consistent improvement from 2 to 16 threads, but the gaming-relevant single-thread score of 1,049 and 2-thread score of 2,071 suggest that even lightly-threaded games will not stress the processor. The FPS scaling, estimated from benchmark scores rather than measured data, would be effectively flat across different CPU loads because the GPU will be the limiting factor at all times. For non-gaming workloads, however, the balance shifts dramatically; the CPU's Cinebench R23 multi-core score of 42,767 and PassMark integer math score of 160,779 mean that CPU-bound tasks like video encoding, software compilation, and 3D rendering will run at near-optimal speed, with the GPU playing a minimal role.

GPU Analysis

The AMD Radeon RX 6400 is built on the RDNA 2.0 architecture using the Navi 24 chip, manufactured on TSMC's 6 nm process with 5,400 million transistors on a 107 mm² die. It features 768 shading units, 48 texture mapping units, 32 raster output units, and 12 ray tracing cores, with no tensor cores present. The GPU operates at a base clock of 1923 MHz, a game clock of 2039 MHz, and a boost clock of 2321 MHz, with memory running at 2000 MHz (16 Gbps effective). The 4 GB of GDDR6 memory on a 64-bit bus provides 128.0 GB/s of bandwidth, which is limited for modern gaming but sufficient for basic rendering tasks.

The GPU's compute capabilities are modest, with FP32 performance of 3.565 TFLOPS and FP16 performance of 7.130 TFLOPS (2:1). The pixel rate of 74.27 GPixel/s and texture rate of 111.4 GTexel/s indicate that the GPU can handle simple 3D scenes but will struggle with high-resolution textures and complex geometry. The ray tracing cores are present but limited in number, and the PassMark DirectX 12 score of 30 suggests that ray-traced workloads will be particularly challenging. For rendering tasks like video encoding or 3D model display, the GPU's Geekbench OpenCL score of 32,011 provides some compute capability, but the 35th percentile overall ranking places it firmly in the entry-level category.

Usage Scenarios

High-Refresh Gaming: The RX 6400's 35th percentile GPU ranking and PassMark DirectX 12 score of 30 make high-refresh gaming at 1080p unrealistic for modern titles. The GPU's 4 GB VRAM and 128.0 GB/s bandwidth will limit frame rates, and the CPU's strong single-thread score of 1,049 in 3DMark cannot compensate for GPU limitations. Estimated FPS would likely fall below 60 in most AAA games at high settings, making this pairing unsuitable for 144 Hz displays in current games.

Streaming: The CPU's 12 cores and 24 threads, with a Cinebench R23 multi-core score of 42,767, are well-suited for software encoding while gaming. The PassMark data encryption score of 35,293 and floating-point math score of 97,246 indicate the CPU can handle the computational load of encoding without impacting overall system performance, but the GPU's gaming limitations mean the stream quality would be constrained by the graphics card's output.

Video Editing: The CPU's high multi-core performance, evidenced by the Geekbench multi-core score of 18,808 and PassMark multi-thread score of 50,317, enables smooth timeline scrubbing and fast export times in video editing software. The GPU's 4 GB VRAM and OpenCL score of 32,011 provide basic acceleration for effects and transitions, but complex GPU-accelerated effects may be slow. This pairing is viable for 1080p editing workflows.

3D Rendering: CPU-based rendering will be excellent, with the Cinebench R20 multi-core score of 17,962 and R23 score of 42,767 indicating fast render times for CPU-bound engines. GPU-based rendering will be limited by the RX 6400's 3.565 TFLOPS FP32 performance and 2,812 PassMark GPU compute score, making it suitable only for simple scenes or preview renders.

Software Development: The CPU's 24 threads and PassMark integer math score of 160,779 enable fast compilation of large codebases, while the data compression score of 593,838 aids in efficient build artifact handling. The 128 MB L3 cache helps with frequently accessed data, and the system is well-suited for full-stack development, containerization, and local testing. The GPU's capabilities are largely irrelevant for this workload.

Student and Office Work: The system is overkill for standard office applications, with the CPU's single-thread PassMark score of 4,126 providing instant response in word processors and spreadsheets. The GPU's PassMark G2D score of 722 ensures smooth 2D desktop rendering, and the 4 GB VRAM is sufficient for multi-monitor setups and basic productivity tasks. The CPU's 120 W TDP makes it relatively efficient for a high-performance desktop.

Upgrade Path and Platform

The AMD Ryzen 9 7900X3D uses the AMD Socket AM5 platform, which provides 24 PCIe Gen 5 lanes from the CPU and supports dual-channel DDR5 memory with ECC capability. The platform supports 128 MB of shared L3 cache via the 3D V-Cache slice, and the unlocked multiplier allows for overclocking headroom. The CPU was released on 2023-01-03 with a launch MSRP of $599.

The RX 6400 uses a PCIe 4.0 x4 bus interface, which is a potential limitation even within the AM5 platform. The GPU has a TDP of 53 W and a suggested PSU of 250 W, meaning the power supply requirements are minimal, but the x4 interface can bottleneck performance in some scenarios, particularly when VRAM is exceeded and the system must access system memory over the limited bus width. The GPU's single-slot design and lack of power connectors make installation straightforward.

The most sensible next upgrade for this system would be replacing the RX 6400 with a more powerful GPU. The CPU's 90th percentile performance and PCIe Gen 5 support mean it can fully utilize a significantly faster graphics card, and the 250 W suggested PSU for the current GPU suggests the platform has substantial power headroom for a more power-hungry card. The CPU's strong benchmark scores, particularly the 3DMark max threads score of 11,480, indicate it would not bottleneck a mid-range or even high-end GPU in most workloads, making the CPU a long-lived platform component.

FAQ

Q: What is the performance gap between the CPU and GPU in this pairing?

A: The CPU ranks in the 90th percentile of all processors with an average benchmark score of 47,908, while the GPU ranks in the 35th percentile with an average score of 6,001. This represents a significant disparity that makes the GPU the clear bottleneck in graphics-intensive tasks.

Q: Can this system handle modern gaming at high settings?

A: Based on estimated performance from benchmark scores, the RX 6400's PassMark DirectX 12 score of 30 and 3DMark Steel Nomad DX12 score of 176 indicate that modern AAA games at high settings would likely produce low frame rates. The GPU's 4 GB VRAM and 128.0 GB/s bandwidth further limit high-detail gaming.

Q: How does the CPU compare to its nearest rivals?

A: The Ryzen 9 7900X3D's average score of 47,908 is essentially tied with the AMD Ryzen 9 3900 at 47,918 (0% delta), 0.4% ahead of the Intel Core Ultra 7 265T at 47,697, and 0.5% behind the AMD Ryzen AI Max PRO 380 at 48,171.

Q: What is the GPU's memory configuration and bandwidth?

A: The RX 6400 has 4 GB of GDDR6 memory on a 64-bit bus, providing 128.0 GB/s of bandwidth. The memory operates at 2000 MHz with 16 Gbps effective speed.

Q: Is the CPU suitable for multi-threaded workloads?

A: Yes, the CPU's 12 cores and 24 threads deliver strong multi-threaded performance, with a Cinebench R23 multi-core score of 42,767 and a PassMark multi-thread score of 50,317, placing it in the 90th percentile of all CPUs.

Q: What are the power requirements for this GPU?

A: The RX 6400 has a TDP of 53 W and a suggested PSU of 250 W. It uses a single-slot design with no power connectors, making it very power-efficient and easy to install.

Q: Does the CPU support overclocking?

A: Yes, the Ryzen 9 7900X3D has an unlocked multiplier, allowing for overclocking. The CPU's base clock is 4.40 GHz with a boost clock of 5.60 GHz, and its 120 W TDP provides thermal headroom for tuning.

Who Should Build It

This system is best suited for users who prioritize CPU performance and require minimal GPU capability. Given the CPU's 90th percentile ranking and the GPU's 35th percentile ranking, the target audience includes content creators working with CPU-intensive applications like video encoding, 3D rendering with CPU-based engines, and large-scale data processing. Software developers will benefit from the CPU's 24 threads and PassMark integer math score of 160,779, which accelerate compilation and testing workflows.

Students and office workers would find this system more powerful than needed for typical tasks, but the CPU's efficiency and the GPU's low power draw make it a reliable workstation for general use. The system is not recommended for gamers seeking high-refresh or high-resolution experiences, as the GPU's 4 GB VRAM and benchmark scores indicate it is limited to basic gaming at lower settings. Small business workstations handling spreadsheets, databases, and light rendering would benefit from the CPU's strong multi-threaded performance, though the GPU's capabilities may be underutilized in such scenarios.

Build Overview

This desktop build pairs the AMD Ryzen 9 7900X3D, a 12-core Zen 4 processor with 3D V-Cache, with the AMD Radeon RX 6400, an entry-level RDNA 2.0 graphics card. The CPU's average benchmark score of 47,908 places it in the 90th percentile of all CPUs, while the GPU's average score of 6,001 places it in the 35th percentile of all GPUs, resulting in a combined percentile of 63. The system represents an extreme CPU-first configuration where the processor's capabilities vastly exceed the graphics card's, making it suitable for compute-heavy workloads but limited for gaming. The build class is desktop, and the overall tier reflects a system that excels at processor-intensive tasks while remaining entry-level in graphics performance.