SYSTEM ANALYZER

Rate My PC: Intel Core i9-13900KF + AMD Radeon RX 6400

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

Build Configuration

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PROCESSOR (CPU)

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GRAPHICS CARD (GPU)

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89 Score

Top 11% Ranking

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

96%

GPU

83%

PROCESSOR

Intel Core i9-13900KF

61,841 Benchmark Score

Top 4% Market Ranking

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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

View All Games →

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 Intel Core i9-13900KF paired with the AMD Radeon RX 6400 is a study in extreme asymmetry. This combination pairs one of the most powerful desktop CPUs available with a low-end, entry-level graphics card. The benchmark data indicates that the GPU is the overwhelming bottleneck in virtually every graphics-intensive scenario, while the CPU’s massive compute resources remain largely underutilized in gaming. No measured FPS rows exist for this exact combination, so all FPS discussion is estimated from the benchmark scores.

Balance and Bottleneck

The performance profile of this pairing is defined by a stark imbalance. The CPU sits in the 93rd percentile of all CPUs, while the GPU languishes in the 35th percentile of all GPUs. This 58-point gap is the clearest indicator of where the bottleneck lies. In any workload that touches the GPU, the Radeon RX 6400 will be the limiting factor, capping frame rates and visual fidelity far below what the Core i9-13900KF is capable of driving.

The benchmark scores reinforce this. The CPU’s 3DMark max-thread score of 15405 and single-thread score of 1188 are excellent, indicating it can handle complex game logic, physics, and AI calculations with ease. Meanwhile, the GPU’s 3DMark Steel Nomad DX12 score of 176 is extremely low, suggesting that the graphics pipeline will be saturated long before the CPU breaks a sweat. The GPU’s PassMark G3D score of 7673 is roughly 8% of the CPU’s average benchmark score, but these are not directly comparable metrics; however, the percentile difference clarifies the hierarchy.

In CPU-bound scenarios, such as high-frequency simulation, software compilation, or data processing, the i9-13900KF will perform at its peak, with the RX 6400 only mattering for display output. Conversely, in GPU-bound scenarios like modern gaming at high settings, the RX 6400 will be the sole arbiter of performance. The FPS will be determined almost entirely by the GPU’s capabilities, and the CPU’s potential will go untapped. The data suggests that upgrading the GPU would yield a transformative performance increase, while upgrading the CPU would yield a negligible one for gaming.

GPU Analysis

The AMD Radeon RX 6400 is built on the RDNA 2.0 architecture and utilizes the Navi 24 chip, manufactured on a 6 nm process by TSMC. It is a compact design with 5,400 million transistors on a 107 mm² die. The card features 4 GB of GDDR6 memory on a 64-bit bus, providing a bandwidth of 128.0 GB/s. This memory configuration is a primary limitation, as 4 GB is insufficient for modern high-resolution textures and many contemporary game titles at higher settings.

The GPU’s clock speeds are a modest 1923 MHz base and 2321 MHz boost, with a game clock of 2039 MHz. It has 768 shading units, 48 texture mapping units, and 32 raster operation pipelines. The card’s compute capabilities are reflected in its 3.565 TFLOPS of FP32 performance and 7.130 TFLOPS of FP16 (2:1). It includes 12 ray accelerators (RT cores) for hardware-accelerated ray tracing, but the low overall compute power means ray tracing performance will be underwhelming; the PassMark DirectX 12 score of 30 and DirectX 11 score of 70 confirm this is a very low-performance part. The pixel rate is 74.27 GPixel/s and the texture rate is 111.4 GTexel/s.

Benchmark results paint a clear picture of its tier. The PassMark G3D score of 7673 places it in the 35th percentile of all GPUs, putting it in the same performance class as the NVIDIA GeForce GTX 770M (which has an average score of 6000 and a 0% deltaPct) and the NVIDIA RTX PRO 6000 Blackwell Server (average score 5996, 0.1% deltaPct). This indicates that while it is a modern architecture with feature support, its raw performance is comparable to older, mobile-class hardware. The Geekbench OpenCL score of 32011 and Vulkan score of 16372 are consistent with an entry-level desktop card. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, meaning it can run modern APIs, but at low resolutions and settings. The bus interface is PCIe 4.0 x4, which limits bandwidth to the CPU, though this is less of a concern given the card’s overall bandwidth constraints.

Benchmark Performance

The CPU’s benchmark scores are exceptional across the board. In Cinebench R23, it achieves a multicore score of 48855 and a single-core score of 6897, demonstrating its dominance in both multi-threaded rendering and lightly-threaded tasks. Its Geekbench multicore score is 22486, with a single-core score of 2668. In PassMark, the CPU scores 57729 in multithread, 4584 in single-thread, and excels in integer math (206859) and floating-point math (150869). Its 3DMark scores scale well with thread count: 2353 for 2 threads, 4643 for 4 threads, 8510 for 8 threads, 11177 for 16 threads, and 15405 for max threads. The average benchmark score for the CPU is 61841, and its nearest rival, the Intel Core Ultra 7 270HX Plus, has an average score of 61834, a 0% deltaPct, placing them in lockstep.

The GPU’s benchmark performance is, in contrast, modest. Its PassMark G3D score of 7673 and average benchmark score of 6001 place it in the 35th percentile. In the 3DMark Steel Nomad DX12 test, it scores 176, a very low result indicating minimal DX12 rendering capability. PassMark DirectX 9, 10, 11, and 12 scores are 93, 54, 70, and 30, respectively. The combined picture is of a system with stratospheric CPU power and ground-level GPU power. The combined percentile for this pairing is 64, which is pulled up significantly by the CPU. For gaming, the effective performance will be that of the RX 6400; for productivity tasks that rely on the CPU, the performance will be that of the i9-13900KF.

Upgrade Path and Platform

The platform is built around the Intel Socket 1700, which supports the Core 13th Gen series. The CPU supports both DDR4 and DDR5 memory in a dual-channel configuration, providing flexibility in choosing memory that balances cost and performance. The i9-13900KF also supports ECC memory, a feature valuable for workstation stability. It provides PCIe Gen 5 with 20 lanes from the CPU, enabling high-bandwidth connectivity for the fastest NVMe SSDs and future expansion cards. The GPU, however, uses a PCIe 4.0 x4 interface, which is a bottleneck for the GPU itself but also means it takes up few lanes, leaving plenty of bandwidth for other devices.

The power requirements are also asymmetric. The CPU has a TDP of 125 W, which is substantial, while the GPU has a TDP of just 53 W and draws all its power from the PCIe slot, requiring no external power connectors. The suggested PSU for the GPU is a modest 250 W. However, given the CPU’s 125 W TDP and potential for high boost clocks, a system with this processor would require a much more robust power supply in practice, despite the GPU’s low draw. The i9-13900KF has an unlocked multiplier, allowing for overclocking on compatible Z-series motherboards.

The most sensible next upgrade is unequivocally the graphics card. The CPU is a top-tier performer that will remain relevant for years, while the GPU is a significant limiting factor. Swapping the RX 6400 for a higher-tier GPU would unlock the CPU’s full potential in gaming and GPU-accelerated workloads, transforming the system’s overall capability. The platform itself has no clear upgrade path beyond the 13th Gen series on Socket 1700, so the CPU is a final-stop processor for this motherboard. A future upgrade would involve moving to a new socket and platform, but the i9-13900KF’s performance is so high that this is unlikely to be necessary for a long time.

CPU Analysis

The Intel Core i9-13900KF is a 24-core, 32-thread processor based on the Raptor Lake architecture, manufactured on Intel’s 10 nm process. It has a base clock of 3.00 GHz and a boost clock of 5.80 GHz, which is among the highest available. The cache hierarchy includes 80 KB of L1 per core, 2 MB of L2 per core, and a large 36 MB shared L3 cache. The die size is 257 mm². It is designed for the desktop market and was released on 2022-09-26 with a launch MSRP of $564.

The benchmark scores show a CPU that excels in every category. The Cinebench R23 multicore score of 48855 indicates exceptional performance in video rendering, 3D modeling, and scientific computing. The single-core score of 6897 is equally impressive, ensuring snappy responsiveness in everyday tasks and strong performance in games that rely on single-threaded performance. The PassMark data compression score of 786218 and data encryption score of 46186 highlight its strength in archival and security workloads. The extended instructions score of 46084 shows strong SIMD performance for tasks like video encoding and physics calculations.

Its nearest rivals, the Intel Core Ultra 7 270HX Plus (avgScore 61834, deltaPct 0) and the Intel Core i9-13900K (avgScore 61766, deltaPct 0.1), are virtually identical in average benchmark score, indicating that the i9-13900KF is at the very top of the performance heap. This is a CPU that will not be the bottleneck in any system, regardless of the GPU paired with it. Its 93rd percentile standing means it outperforms the vast majority of all CPUs on the market.

FAQ

Q: Is the Intel Core i9-13900KF a good match for the AMD Radeon RX 6400?

A: No. The CPU is in the 93rd percentile of all CPUs, while the GPU is in the 35th percentile of all GPUs. This massive disparity means the GPU will severely bottleneck the CPU in graphics-intensive workloads, preventing the system from reaching its potential.

Q: What is the single biggest performance limitation of this system?

A: The AMD Radeon RX 6400’s 4 GB of GDDR6 memory and 128.0 GB/s bandwidth, combined with its low compute scores (PassMark G3D score of 7673), make it the definitive limiting factor for gaming and GPU-accelerated tasks.

Q: Can this system play modern games?

A: It can run them, but at low resolutions and with reduced settings. The GPU’s low 3DMark Steel Nomad DX12 score of 176 and PassMark DirectX 12 score of 30 indicate it will struggle with modern titles, especially those with high VRAM requirements.

Q: Does the CPU support overclocking?

A: Yes, the multiplier is unlocked, allowing for overclocking on a compatible motherboard. This is a feature of the “KF” suffix, which also means it lacks integrated graphics.

Q: What kind of memory does this CPU support?

A: It supports both DDR4 and DDR5 in a dual-channel configuration. It also supports ECC memory, which is useful for error-sensitive workstation tasks.

Q: How does the i9-13900KF compare to its closest rival, the Intel Core Ultra 7 270HX Plus?

A: They are effectively tied. The Core Ultra 7 270HX Plus has an average benchmark score of 61834, while the i9-13900KF has an average score of 61841, a negligible 0% deltaPct difference.

Q: What is the recommended power supply for the GPU?

A: The suggested PSU for the GPU is 250 W, though the CPU’s 125 W TDP means a system with this processor will require a much higher-wattage power supply in total.

Who Should Build It

This build is for a specific, narrow audience. It is not a balanced gaming rig. The target user is someone who requires maximum CPU compute power for professional or productivity workloads—such as software development, data analysis, 3D rendering, or video encoding—but has minimal to no need for high-end graphics performance. The i9-13900KF’s 93rd percentile CPU performance and scores like the Cinebench R23 multicore result of 48855 make it a workstation-class processor, while the RX 6400 is sufficient for basic display output, office applications, and 2D work.

Students in computer science or engineering fields would benefit from the CPU’s compilation speed and multithreaded performance for simulations. Small business workstations handling large databases or complex spreadsheets would see significant gains from the CPU’s PassMark multithread score of 57729. Gamers who play only esports titles at 1080p with low settings might find the RX 6400 adequate, but they are leaving the CPU’s potential entirely on the table. This is a builder who prioritizes compute over graphics and understands the system’s limitations. The GPU’s 35th percentile ranking makes it a poor choice for any graphics-intensive task, so this build is for those who see the GPU as a necessary output device rather than a performance component.

Build Overview

This pairing is a desktop class build combining an Intel Core i9-13900KF (Raptor Lake-S architecture) with an AMD Radeon RX 6400 (RDNA 2.0 architecture). The combined percentile for this system is 64, which is a misleading figure, as it is dragged down by the GPU’s low 35th percentile standing. The CPU is a top-tier component in the 93rd percentile of all CPUs, while the GPU is an entry-level part in the 35th percentile. The overall tier is therefore that of a workstation-class CPU with a display adapter-grade GPU. This is not a balanced system; it is a compute-focused platform with a placeholder for graphics. The data suggests the system’s overall capability is high for CPU-bound tasks and low for GPU-bound tasks, reflecting a performance profile that is bifurcated.

Usage Scenarios

High-refresh gaming: This is not a viable scenario. The RX 6400’s performance is too low to drive high frame rates at any modern resolution. The GPU’s PassMark G3D score of 7673 and 3DMark Steel Nomad score of 176 indicate that even at 1080p with low settings, frame rates will be low, and the CPU’s power will be irrelevant.

Streaming: The CPU can handle the encoding workload via software, given its PassMark extended instructions score of 46084 and high multithreaded performance. However, the game being streamed will run poorly due to the GPU. This scenario is only viable for streaming CPU-heavy tasks like desktop capture or coding, not modern games.

Video editing: Excellent for CPU-bound tasks like encoding and rendering. The Cinebench R23 multicore score of 48855 indicates fast export times. However, real-time preview with effects will be hampered by the GPU’s low compute power (3.565 TFLOPS FP32).

3D rendering: The CPU will excel in CPU-based renderers. The 24 cores and 32 threads will provide substantial performance in applications like Blender’s Cycles (CPU mode) or V-Ray. The GPU is not suitable for GPU-accelerated rendering due to its low scores.

Software development: An ideal scenario. Compilation times will be minimal thanks to the CPU’s high single-thread (4584 PassMark single-thread) and multithread (57729 PassMark multithread) scores. The GPU is sufficient for a multi-monitor coding setup, with a PassMark G2D score of 722.

Student and office work: Overkill. The CPU’s power is wasted on document editing and web browsing, but it will handle any task with extreme ease. The GPU is more than adequate for 2D applications and video playback, making this a responsive, if unbalanced, office machine.

Rate My PC: Intel Core i9-13900KF + AMD Radeon RX 6400

Power Build

System Balance Analysis

Intel Core i9-13900KF

AMD Radeon RX 6400

Market Position

Game Performance Benchmarks

Cyberpunk 2077

Red Dead Redemption 2

Microsoft Flight Simulator

Control

Call of Duty: Warzone

Fortnite

Performance Insights

Strong Performance

Performance Tiers Explained

Ultimate

High-End

Mid-Range

Entry Level

Legacy

Balance and Bottleneck

GPU Analysis

Benchmark Performance

Upgrade Path and Platform

CPU Analysis

FAQ

Who Should Build It

Build Overview

Usage Scenarios

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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