AMD
Radeon RX 6400 vs Radeon RX Vega 56
Full comparison of specs, performance and benchmarks
AMD
RX Vega 56
Aggregate performance score
We've compared RX 6400 and RX Vega 56 across specs and all relevant benchmarks.
↗RX Vega 56 outperforms RX 6400 by ~36% on the catalog index; this is not a measured FPS gain.+36%
Scores are normalized on the Head to Head scale. Higher is better. How is this calculated?H2HBench Data Quality
Low confidenceSpecifications: Field verification not recordedVerified gaming results: 0Estimated / unverified results: 32Price record updated: Sep 15, 2026
Limited verified data
H2HBench Verdict
Higher catalog score: Radeon RX 6400 (~6%)
The score difference is not a measured FPS improvement.
Reasons to consider RX 6400
- Lower stated power consumption
- Higher catalog value index
- Recorded feature support: OpenCL 2.2 · FSR
Reasons to consider RX Vega 56
- Higher catalog performance index
- More graphics memory
- Recorded feature support: OpenCL 2.1 · Not supported
Catalog metrics radar
Axes with missing data are hidden; every value uses a fixed scale.
AMDPerformance
Efficiency
Price / performance
Memory capacity
3345
10071
8356
6068
Graphics card ranking
Positions 105–110of 321
Which should you choose?
Two practical conclusions based on community votes and gaming value.
Radeon RX Vega 56
105 likesHead to Head visitors currently choose this model more often.
Radeon RX Vega 56
Price $118.23Based on catalog performance per unit of current market price, not measured FPS.
Overview
Scores are calculated from specifications, performance, and efficiency.
GamesDirectX, OpenCL, and Vulkan performance
33
45Better
Professional applications3D modeling, video editing, and rendering
30
39Better
AI and machine learningMachine-learning and AI capabilities
28
36Better
Power efficiencyPower consumption across workloads
100Better
71
Head to Head scoreOverall catalog score
50Better
47
Specifications
The better numeric value is highlighted in green, taking the metric direction into account.
HDMI
DisplayPort
Device class
Max monitors
Max resolution
USB Type-C
DirectX
Vulkan
OpenGL
TFLOPSBetter
Power consumptionBetter
Memory type
Power connector
Release date
ArchitectureBetter
Thickness
Compute API
Launch priceBetter
Shader units / coresBetter
Clock speedBetter
Base clockBetter
Boost clockBetter
VRAMBetter
Memory frequencyBetter
Memory busBetter
Memory bandwidthBetter
Interface
Power consumptionBetter
Process nodeBetter
Recommended PSUBetter
Die sizeBetter
Memory cache
Transistor countBetter
Upscaling
Length
Gaming FPS
Available results are shown separately; missing data is not treated as zero.
The Gaming FPS section compares RX 6400 and RX Vega 56 across curated H2H Lab game presets. The useful signal is not only average FPS, but also how each device behaves at 1440p and 4K, how memory capacity and bus width affect heavy textures, and whether the game engine favors raster performance, ray tracing, or driver maturity.
RX 6400RX Vega 56
Verified externalEstimatedSources ↗
Counter-Strike 2
1080p High
168 FPS
201 FPS
1080p Ultra
118 FPS
141 FPS
1440p Ultra
63 FPS
110 FPS
4K Ultra
23 FPS
39 FPS
Counter-Strike 2RX 6400168 FPSRX Vega 56201 FPSRX 6400118 FPSRX Vega 56141 FPSRX 640063 FPSRX Vega 56110 FPSRX 640023 FPSRX Vega 5639 FPS
Cyberpunk 2077RX 6400109 FPSRX Vega 56129 FPSRX 640093 FPSRX Vega 56112 FPSRX 640046 FPSRX Vega 5679 FPSRX 640015 FPSRX Vega 5626 FPS
Forza Horizon 5RX 6400137 FPSRX Vega 56163 FPSRX 640088 FPSRX Vega 56106 FPSRX 640057 FPSRX Vega 5699 FPSRX 640033 FPSRX Vega 5658 FPS
Hogwarts LegacyRX 640089 FPSRX Vega 56106 FPSRX 640074 FPSRX Vega 5688 FPSRX 640041 FPSRX Vega 5671 FPSRX 640016 FPSRX Vega 5627 FPS
H2H workload indices
Comparable internal indices on a fixed 0–100 scale.
H2H Raster IndexH2H Index / 100334531%
H2H Compute IndexH2H Index / 100444911%
H2H Rendering IndexH2H Index / 100415224%
H2H Memory Workload IndexH2H Index / 100606813%
H2H Efficiency IndexH2H Index / 1001007134%
These are versioned H2H calculated indices derived from normalized catalog data. They are not results from a third-party benchmark.
H2H AI workload indices
Estimated workload profiles based on available performance and memory data.
H2H Image Generation IndexH2H Index / 100455520%
H2H ML Training IndexH2H Index / 100445420%
H2H Inference IndexH2H Index / 100415224%
H2H Local LLM IndexH2H Index / 100485819%
H2H Computer Vision IndexH2H Index / 100415224%
These are versioned H2H calculated indices derived from normalized catalog data. They are not results from a third-party benchmark.
Graphics APIs, SDKs and upscaling
DirectX12.212.1
Vulkan1.41.3
OpenGL4.64.6
UpscalingFSRNot supported
Compute APIOpenCL 2.2OpenCL 2.1
Architecture and release
ArchitectureRDNA 2.0GCN 5.0Better
Process node6 nmBetter14 nm
Release date20222017
Device classDesktopDesktop
GPU cores, die and clocks
Transistor count5400 million12500 millionBetter
Die size107 mm²Better495 mm²
Shader units / cores7683584Better
Base clock1923 MHzBetter1156 MHz
Boost clock2321 MHzBetter1471 MHz
Board size, power and compatibility
InterfacePCIe 4x4PCIe 3x16
LengthVaries by board280 mm
ThicknessSingle-slotDual-slot
Recommended PSU250 WBetter550 W
Power connectorNone8+8 pin
Display outputs and limits
HDMIHDMI 2.1HDMI 2.0b
DisplayPortDisplayPort 1.4aDisplayPort 1.4a
USB Type-CNoNo
Max monitors24
Max resolution7680 × 43207680 × 4320
Memory and compute throughput
VRAM4 GB GDDR68 GB HBM2Better
Memory typeGDDR6HBM2
Memory bus64 bit2048 bitBetter
TFLOPS3.56510.54Better
Other comparisons
GTX 1660 TiNVIDIAReviews and questions
Explain this comparison
Beyond percentages: causes, relevant specifications, and practical impact behind every chart.
What AI will explain
Overall score, radar, FPS, synthetic tests, specifications, efficiency, and value.
Evidence details
Data coverage
- Verified gaming results
- 0
- Verified synthetic results
- 0
- Games with verified results
- 0
- Verified community results
- 0
- Estimated / unverified results
- 32
- Specifications
- 0 / 70
Calculated scores · How is this calculated?
Scores use the catalog model and may include estimated inputs. Open each score to see its origin and the methodology.
clamp(round(performance × 0.7 + (efficiency ?? 50) × 0.2 + (value is missing ? 0 : (value − 50) × 0.2)), 0, 100)Price evidence · View sources (5)
Verified community results
No verified community benchmarks yet.
Reviewed by
No individual editorial review is recorded for this comparison.
Comparison history
Show recorded changes (8)
- · Record updated: products
- · Record updated: products
- · Record updated: products
- · Record updated: products
- · Record updated: products
- · Record changed: product_prices
- · Record updated: products
- · Record updated: products
Why you can trust this comparison
Origin and confidence are evaluated from the evidence attached to each value. Unverified results are identified, and specification, benchmark and price dates remain separate.
Owner experiences
Real builds, results, and community feedback.
Moderator reviewedHelpful to the communityExpert badges
Frequently asked comparison questions
Short recommendations based on performance, memory, power consumption, and intended use.
01Which is better for gaming: RX 6400 or RX Vega 56?+
RX 6400 has the higher overall gaming score, while RX 6400 offers the better price-to-performance ratio. The final choice depends on resolution and settings.
02Which is better for streaming?+
RX 6400 is the stronger streaming choice thanks to performance, hardware encoding, and application support. Check AV1, H.264, and HEVC support before buying.
03Which is better for Blender?+
RX 6400 is generally the better option for Blender and GPU rendering. Rendering-engine support and available VRAM also matter.
04Which is better for video editing?+
RX 6400 offers more overall performance, while RX 6400 offers more memory headroom. Codecs, hardware encoders, and editor optimization can change the result.
05Which is better for neural networks and AI?+
RX 6400 is the more practical option for local AI workloads. VRAM capacity, compute libraries, and framework compatibility are especially important.
06Which is better for 1080p?+
RX 6400 is the most rational 1080p choice, where high frame rates and cost per frame matter most.
07Which is better for 1440p?+
RX 6400 leads in combined 1440p performance. RX 6400 can be preferable for heavy textures and games with high VRAM usage.
08Which is better for 4K?+
RX 6400 is preferable for 4K, where total performance, memory bandwidth, and VRAM capacity have the greatest impact.
09Which is better for a quiet PC?+
RX 6400 is easier to use in a quiet build because of its lower estimated power and thermal load. Actual noise depends on the specific cooler.
10Which is better without replacing the power supply?+
RX 6400 is the safer candidate because its stated power consumption is lower. Verify PSU wattage, age, and power connectors.
11Is it worth upgrading from the previous generation?+
Consider upgrading to RX 6400 if your current device no longer delivers the required FPS, memory capacity, or feature support. A gain below 15–20% is usually worth waiting for a price cut.