SYSTEM ANALYZER

Rate My PC: AMD Ryzen 9 5900 + 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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88 Score

Top 12% Ranking

88 / 100

HIGH-END

Power Build

Top 12% 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%

GPU

83%

PROCESSOR

AMD Ryzen 9 5900

46,971 Benchmark Score

Top 6% 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

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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.

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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

This pairing combines one of AMD's high-core-count desktop CPUs, the Ryzen 9 5900, with one of its smallest discrete GPUs of the RDNA 2 generation, the Radeon RX 6400. The result is an unusual build: a CPU sitting in the 89th percentile of all processors, matched to a GPU in the 35th percentile, producing a combined percentile of 62. The twelve-core, twenty-four-thread Zen 3 processor is comfortably the stronger half of this desktop configuration, while the compact single-slot Radeon handles light rendering duties on a very narrow memory bus. No measured FPS data exists for this exact combination in the database, so all frame-rate discussion below is estimated from the benchmark scores.

CPU Analysis

The Ryzen 9 5900 is a 12-core, 24-thread desktop processor built on AMD's Zen 3 architecture, codenamed Vermeer, manufactured on TSMC's 7 nm process. It runs a 3.00 GHz base clock with a 4.70 GHz boost, fits Socket AM4, and carries a 65 W TDP. The chip is a dual-die design — two 74 mm² dies totalling 8,300 million transistors — with a unified 64 MB L3 cache, 512 KB of L2 per core and 64 KB of L1 per core. Memory support is DDR4 over a dual-channel bus delivering 51.2 GB/s, ECC is supported, and the CPU exposes PCIe Gen 4 with 20 lanes. There is no integrated graphics, and the multiplier is unlocked.

The benchmark data places this processor near the top of the performance distribution: an 89th percentile ranking against all CPUs, with an average benchmark score of 46971. The nearest rivals listed in the database are a strikingly modern group — the AMD Ryzen AI 9 HX PRO 375 sits essentially even at 47022 average score (a deltaPct of -0.1 for the 5900), the Intel Core i7-13700K trails marginally at 46881 (0.2), the Intel Core i9-12900F leads slightly at 47176 (-0.4), and the AMD Ryzen 9 7845HX lands at 46654 (0.7). In other words, a 2021 Zen 3 part still matches or beats a Raptor Lake i7 and a modern AI-branded mobile flagship on aggregate benchmark average. That is the headline: sustained, high-throughput multi-core performance that has aged very well.

Rendering results back that up. Cinebench R23 multi-core comes in at 28834, with R23 single-core at 4070; Cinebench R20 posts 12110 multi and 1709 single; R15 records 2906 multi and 410 single. The multi-to-single ratio across these runs is roughly seven-to-one, which is what you expect when twelve physical cores are being properly fed by a large shared L3 pool. For real workloads this means the 5900 chews through long, parallel tasks — CPU renders, code compiles, batch encodes — at a pace competitive with far newer silicon, while single-thread performance remains solidly upper-tier thanks to the 4.70 GHz boost and Zen 3's cache layout.

The PassMark subtests fill out the picture. Multi-threaded throughput is 33969, with single-thread at 3439. Integer math scores 128641, floating point 69124, extended instructions 26859, data compression 411453, encryption 26247, string sorting 43386, physics 1697, and prime finding 213. The compression and integer numbers in particular indicate strong memory-subsystem behaviour, which matters for archive-heavy work and database-style operations. Overall, the data shows a CPU that is compute-rich rather than efficiency-optimised: 12 cores at a modest TDP, delivering throughput that keeps it relevant against current-generation competitors.

FAQ

Q: How does the Ryzen 9 5900 compare to its nearest rivals?

A: Its average benchmark score of 46971 puts it within a fraction of a percent of the AMD Ryzen AI 9 HX PRO 375 (47022), the Intel Core i7-13700K (46881), the Intel Core i9-12900F (47176) and the AMD Ryzen 9 7845HX (46654). All four deltas are under one percent in either direction.

Q: How many cores and threads does the Ryzen 9 5900 have?

A: 12 cores and 24 threads, on the Zen 3 (Vermeer) architecture, with 64 MB of L3 cache and a 4.70 GHz maximum boost clock.

Q: Is the RX 6400 a capable gaming card?

A: Only at the light end. With a PassMark G3D score of 7673 and a 35th percentile ranking against all GPUs, it sits near the entry tier of discrete graphics. It is best treated as a basic display and light-gaming solution rather than a performance part.

Q: Does the RX 6400 need external power?

A: No. It has no power connectors, a 53 W TDP, and a suggested PSU of 250 W — it draws everything it needs from the slot and occupies a single slot.

Q: Is this build balanced?

A: No. The combined percentile of 62 reflects a strong CPU dragged down by a weak GPU. The CPU's 89th percentile against the GPU's 35th percentile means graphics workloads will bottleneck well before the processor does.

Q: Are there measured game FPS figures for this exact pairing?

A: No. The database contains no measured FPS data for this combination, so all frame-rate expectations here are estimates derived from the CPU and GPU benchmark scores.

Q: What was the RX 6400's launch MSRP?

A: Launch MSRP was 159 USD.

Gaming Performance

No measured FPS rows exist for this exact combination in the benchmark database — the data is explicitly flagged as not measured. Everything in this section is therefore an estimate inferred from the benchmark scores, primarily the RX 6400's PassMark G3D result of 7673, its DirectX subtest scores of 93 (DX9), 54 (DX10), 70 (DX11) and 30 (DX12), and its 3DMark Steel Nomad DX12 score of 176.

Those numbers describe a card for modest settings and modest resolutions. The 35th percentile ranking among all GPUs places the RX 6400 far below the hardware typically used for high-refresh 1080p gaming, and the low DX12 subtest score relative to DX9 suggests modern API overhead hits this small GPU disproportionately hard. With 768 shading units, 48 TMUs, 32 ROPs and 3.565 TFLOPS of FP32 compute, realistic expectations are older or lighter titles at 1080p with reduced settings, and esports-class games where the load is light. Demanding AAA releases at high settings are beyond what the scores indicate.

The CPU side will never be the limiter in games. With a PassMark single-thread score of 3439 and physics score of 1697, the Ryzen 9 5900 can feed frame rates far above what the RX 6400 can render. The practical consequence: in CPU-bound scenarios the GPU is still the ceiling, and lowering resolution will initially scale frames upward before the card's 4 GB of VRAM and 128 GB/s of bandwidth become the wall. The 64-bit bus and 4 GB buffer are the two hard constraints that no CPU can compensate for in texture-heavy scenes.

Usage Scenarios

High-refresh gaming: Not a fit. The RX 6400's 35th percentile ranking and single-digit-to-double-digit DirectX subtest scores indicate frame rates well below the high-refresh threshold in modern titles, regardless of the CPU's strength. The estimate from the benchmark data is light games at reduced settings.

Streaming: Partially viable. The Ryzen 9 5900's 24 threads and PassMark multi-thread score of 33969 leave ample headroom for encoding alongside gameplay, but the GPU cannot render demanding games at settings that make a stream worth watching. Streaming light titles would work; the scores do not support streaming AAA content.

Video editing: The CPU carries this workload. A Cinebench R23 multi-core score of 28834 and a compression score of 411453 handle timeline scrubbing, exports and proxy workflows comfortably. The RX 6400's OpenCL score of 32011 offers some GPU-assisted acceleration, but its 4 GB VRAM limits GPU-dependent effects work.

3D rendering: CPU rendering is the only sensible path. With R23 multi at 28834 and R20 multi at 12110, the 5900 renders scenes at a pace matching the i7-13700K-class group it rivals. GPU-path rendering on the RX 6400 — 3.565 TFLOPS FP32, Vulkan score of 16372 — is limited to previews and small scenes.

Software development: Excellent. The 5900's 89th percentile ranking, 3439 single-thread score and 12 cores make compile times short and containerised workloads comfortable. The GPU is irrelevant here beyond driving displays, which the RX 6400 handles fine across its one HDMI 2.1 and one DisplayPort 1.4a output.

Student and office work: Massively over-provisioned on the CPU side. Documents, browsing and web applications are single-thread affairs, and the 4070 R23 single-core score dispatches them instantly. The GPU's single-slot, connector-free 53 W design simply keeps the machine running quietly and efficiently.

Benchmark Performance

The full score list, and what it means:

On the CPU side — Cinebench R15: 2906 multi / 410 single; Cinebench R20: 12110 multi / 1709 single; Cinebench R23: 28834 multi / 4070 single. PassMark: multi-thread 33969, single-thread 3439, integer math 128641, floating point 69124, extended instructions 26859, data compression 411453, encryption 26247, string sorting 43386, physics 1697, primes 213. The average CPU benchmark score is 46971, good for the 89th percentile among all CPUs.

On the GPU side — PassMark G3D 7673, GPU compute 2812, DirectX 9 at 93, DirectX 10 at 54, DirectX 11 at 70, DirectX 12 at 30, G2D 722; 3DMark Steel Nomad DX12 176; Geekbench OpenCL 32011 and Vulkan 16372. The average GPU score is 6001, placing it in the 35th percentile of all GPUs.

The combined picture is the 62nd percentile, and that single figure tells the story of this build. The CPU alone would rank among the strongest desktop processors benchmarked; the GPU alone ranks in the lower third. Neither score is hidden by the combination — the average of the two positions is exactly where it lands. Benchmarks results indicate this is a compute machine with a display adapter, not a balanced performance rig.

Notably, the RX 6400's listed nearest rivals by average score are an eclectic set — the NVIDIA GeForce GTX 770M at 6000 (0% delta), the NVIDIA RTX PRO 6000 Blackwell Server at 5996 (0.1%), the AMD FirePro W4100 at 5987 (0.2%) and the NVIDIA Quadro K4000M at 5986 (0.3%). This grouping reflects how averaging works across mixed test suites rather than true performance equivalence, and it should not be read as a like-for-like comparison; the per-test scores above are the more reliable indicator.

Who Should Build It

The measured data points to three sensible audiences. First, developers and technical professionals: the Ryzen 9 5900's 89th percentile CPU ranking, 33969 multi-thread score and 3439 single-thread score make this a strong compile-and-container machine, and the RX 6400's single-slot, power-connector-free 53 W design slots into nearly any chassis without complexity. Second, content creators whose work is CPU-bound — video editors doing CPU-side encodes (compression score 411453), CPU renderers (R23 multi 28834), or anyone whose software leans on the processor rather than the GPU. Third, small business and workstation users: ECC memory support and the 12-core throughput suit file servers, database hosts and general productivity boxes where graphics requirements are minimal.

Who should not build it: gamers chasing frame rates. A 35th-percentile GPU with 4 GB of VRAM and a 128 GB/s memory bus cannot deliver high-refresh or high-settings experiences, and no amount of CPU headroom changes that. Enthusiasts wanting GPU compute also fall outside the target — 3.565 TFLOPS FP32 and a compute score of 2812 are entry-level figures.

Balance and Bottleneck

This is one of the most lopsided pairings the database can produce. The CPU sits at the 89th percentile; the GPU at the 35th. Every graphics-bound workload will be limited by the RX 6400 long before the Ryzen 9 5900 breaks a sweat. The evidence is in the spread: the CPU's PassMark multi-thread score of 33969 towers over the GPU's G3D score of 7673, and the 5900's single-thread score of 3439 — the metric that most closely tracks game engine main loops — is elite while the GPU's DX12 subtest of 30 is entry-tier.

Consider the scaling implication. Lowering resolution or settings typically recovers frame rate when the CPU is the ceiling, but here the ceiling is the card's fixed resources: 4 GB of GDDR6 on a 64-bit bus at 128 GB/s, with a pixel rate of 74.27 GPixel/s and texture rate of 111.4 GTexel/s. Once a scene exceeds the VRAM buffer, no setting change restores performance. Conversely, in CPU-bound tasks — rendering, compiling, compression — the GPU contributes almost nothing, so those workloads scale purely on the processor's 12 cores and land in i7-13700K territory. The combined 62nd percentile is thus not a midpoint of capability but an average of two very different components; users should expect 89th-percentile behaviour in compute tasks and 35th-percentile behaviour in graphics tasks, with nothing in between.

Build Overview

This is a desktop-class build, as flagged by buildClass, pairing a Socket AM4 Ryzen 9 5900 with a PCIe 4.0 x4 Radeon RX 6400. The processor is an active-production, unlocked 12-core Zen 3 part with ECC support, DDR4 memory and PCIe Gen 4 across 20 CPU lanes. The GPU is an end-of-life RDNA 2.0 card built on the Navi 24 chip at 6 nm — 5,400 million transistors on a 107 mm² die, a density of 50.5M per mm² — with launch MSRP of 159 USD.

Tier-wise, the combined percentile of 62 undersells the split: the CPU half is performance-class, the GPU half is entry-class. The practical classification is a workstation-grade CPU platform with a basic discrete graphics adapter — a build whose identity is set almost entirely by its processor. Note one interface nuance from the spec sheet: the RX 6400 connects over PCIe 4.0 x4, a narrow link by graphics standards, and since the 5900 offers PCIe Gen 4, the card runs at its intended generation rather than being halved further on an older platform.

GPU Analysis

The Radeon RX 6400 is a compact RDNA 2.0 part on the Navi 24 die, built at TSMC on 6 nm. Its resource counts are small: 768 shading units, 48 TMUs, 32 ROPs and 12 ray-tracing cores, with no tensor hardware. Clocks run at a 1923 MHz base, a 2039 MHz game clock and a 2321 MHz boost, with memory at 16 Gbps effective. The memory subsystem is the defining constraint — 4 GB of GDDR6 on a 64-bit bus for 128 GB/s of bandwidth, roughly two and a half times the CPU's own 51.2 GB/s memory bandwidth, which is a low ratio for a discrete GPU.

Throughput figures follow from those resources: 3.565 TFLOPS FP32, 7.130 TFLOPS FP16 at 2:1, a pixel rate of 74.27 GPixel/s and texture rate of 111.4 GTexel/s. The benchmark scores confirm entry-tier positioning — PassMark G3D at 7673, GPU compute at 2812, Geekbench OpenCL at 32011 and Vulkan at 16372, for an average of 6001 and a 35th percentile ranking. For rendering work, these numbers mean small scenes preview acceptably and GPU-accelerated effects run at modest scale, but the 4 GB buffer caps texture-heavy projects and modern AAA game assets outright. The 12 RT cores technically enable hardware ray tracing, and DirectX 12 Ultimate support is present, but at this resource level RT is a checkbox feature rather than a usable mode.

The card's genuine strengths are physical and electrical. A 53 W TDP, no power connectors, single-slot width, a 250 W suggested PSU, and one HDMI 2.1 plus one DisplayPort 1.4a output make it a zero-fuss upgrade for systems that need a discrete GPU where none could otherwise fit. As a partner for the Ryzen 9 5900 it fills that role — and only that role.

Rate My PC: AMD Ryzen 9 5900 + AMD Radeon RX 6400

Power Build

System Balance Analysis

AMD Ryzen 9 5900

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

CPU Analysis

FAQ

Gaming Performance

Usage Scenarios

Benchmark Performance

Who Should Build It

Balance and Bottleneck

Build Overview

GPU Analysis

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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