AMD
Radeon 840M vs Radeon HD 6870
Full comparison of specs, performance and benchmarks
AMD
HD 6870
Aggregate performance score
We've compared Radeon 840M and HD 6870 across specs and all relevant benchmarks.
↗Radeon 840M outperforms HD 6870 by ~159% on the catalog index; this is not a measured FPS gain.+159%
Scores are normalized on the Head to Head scale. Higher is better. How is this calculated?H2HBench Data Quality
Low confidenceSpecifications: Partially verifiedVerified gaming results: 0Estimated / unverified results: 16Price record updated: Sep 6, 2026
Limited verified data
H2HBench Verdict
Higher catalog score: Radeon 840M (~45%)
The score difference is not a measured FPS improvement.
Reasons to consider Radeon 840M
- Higher catalog performance index
- Recorded feature support: Not publicly specified · AMD FSR
Reasons to consider HD 6870
- Recorded feature support: OpenCL 1.2 · Not supported
Catalog metrics radar
Axes with missing data are hidden; every value uses a fixed scale.
AMDPerformance
8332
Graphics card ranking
Positions 39–44of 411
Which should you choose?
Two practical conclusions based on community votes and gaming value.
Radeon HD 6870
164 likesHead to Head visitors currently choose this model more often.
Overview
Scores are calculated from specifications, performance, and efficiency.
GamesDirectX, OpenCL, and Vulkan performance
83Better
32
Professional applications3D modeling, video editing, and rendering
66Better
29
AI and machine learningMachine-learning and AI capabilities
64Better
27
Power efficiencyPower consumption across workloads
61
71Better
Head to Head scoreOverall catalog score
68Better
47
Specifications
The better numeric value is highlighted in green, taking the metric direction into account.
Device class
ArchitectureBetter
Process nodeBetter
Shader units / coresBetter
Boost clockBetter
VRAM
Memory type
Memory bus
Interface
Power consumption
Power connector
Length
Thickness
Recommended PSU
HDMI
DisplayPort
USB Type-C
Max monitors
Max resolution
DirectX
Upscaling
Release date
TFLOPS
Vulkan
OpenGL
Compute API
Transistor count
Die size
Base clock
Memory bandwidth
Memory frequency
Memory cache
Clock speed
Power consumption—
Launch price—
Gaming FPS
Available results are shown separately; missing data is not treated as zero.
The Gaming FPS section compares Radeon 840M and HD 6870 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.
Radeon 840MHD 6870
Verified externalEstimatedSources ↗
Counter-Strike 2
1080p High
—
164 FPS
1080p Ultra
—
112 FPS
1440p Ultra
—
63 FPS
4K Ultra
—
23 FPS
Counter-Strike 2Radeon 840M—HD 6870164 FPSRadeon 840M—HD 6870112 FPSRadeon 840M—HD 687063 FPSRadeon 840M—HD 687023 FPS
Cyberpunk 2077Radeon 840M—HD 6870106 FPSRadeon 840M—HD 687088 FPSRadeon 840M—HD 687046 FPSRadeon 840M—HD 687016 FPS
Forza Horizon 5Radeon 840M—HD 6870133 FPSRadeon 840M—HD 687084 FPSRadeon 840M—HD 687057 FPSRadeon 840M—HD 687034 FPS
Hogwarts LegacyRadeon 840M—HD 687086 FPSRadeon 840M—HD 687070 FPSRadeon 840M—HD 687041 FPSRadeon 840M—HD 687016 FPS
H2H workload indices
Comparable internal indices on a fixed 0–100 scale.
H2H Raster IndexH2H Index / 100833289%
H2H Compute IndexH2H Index / 100853583%
H2H Rendering IndexH2H Index / 100833972%
H2H Memory Workload IndexH2H Index / 100056200%
H2H Efficiency IndexH2H Index / 100071200%
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 / 100834363%
H2H ML Training IndexH2H Index / 100834168%
H2H Inference IndexH2H Index / 100833972%
H2H Local LLM IndexH2H Index / 100834559%
H2H Computer Vision IndexH2H Index / 100833972%
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
DirectX1211.0
VulkanNot publicly specifiedNot supported
OpenGLNot publicly specified4.4
UpscalingAMD FSRNot supported
Compute APINot publicly specifiedOpenCL 1.2
Architecture and release
ArchitectureRDNA 3.5BetterTeraScale 2
Process node4 nmBetter40 nm
Release date20252010
Device classMobileDesktop
GPU cores, die and clocks
Transistor countNot publicly specified1700 million
Die sizeNot publicly specified255 mm²
Shader units / cores4 Compute Units1120Better
Base clockNot publicly specified900 MHz
Boost clockUp to 2900 MHz (depends on host processor)Better900 MHz
Board size, power and compatibility
InterfaceIntegrated into processor packagePCIe 2x16
LengthNot applicable (integrated GPU)247 mm
ThicknessNot applicable (integrated GPU)Dual-slot
Recommended PSUSystem dependent450 W
Power connectorNot applicable (integrated GPU)6+6 pin
Display outputs and limits
HDMIHDMI 2.1 (OEM dependent)HDMI 1.3a
DisplayPortDisplayPort 2.1 (OEM dependent)mini-DisplayPort 1.1
USB Type-CDisplayPort Alt Mode supported; OEM dependentNo
Max monitors4 (platform capability)5
Max resolution7680 x 4320 @ 60 Hz (DisplayPort)4096 × 2160
Memory and compute throughput
VRAMShared system memory; OEM configurable1 GB GDDR5
Memory typeShared DDR5 / LPDDR5XGDDR5
Memory busDepends on system memory configuration256 bit
TFLOPSNot publicly specified2.016
Other comparisons
Reviews 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
- 16
- Specifications
- 18 / 68
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 (3)
Verified community results
No verified community benchmarks yet.
Reviewed by
No individual editorial review is recorded for this comparison.
Comparison history
Show recorded changes (2)
- · 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: Radeon 840M or HD 6870?+
Radeon 840M has the higher overall gaming score, while HD 6870 offers the better price-to-performance ratio. The final choice depends on resolution and settings.
02Which is better for streaming?+
Radeon 840M 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?+
Radeon 840M is generally the better option for Blender and GPU rendering. Rendering-engine support and available VRAM also matter.
04Which is better for video editing?+
Radeon 840M offers more overall performance, while Radeon 840M offers more memory headroom. Codecs, hardware encoders, and editor optimization can change the result.
05Which is better for neural networks and AI?+
Radeon 840M is the more practical option for local AI workloads. VRAM capacity, compute libraries, and framework compatibility are especially important.
06Which is better for 1080p?+
HD 6870 is the most rational 1080p choice, where high frame rates and cost per frame matter most.
07Which is better for 1440p?+
Radeon 840M leads in combined 1440p performance. Radeon 840M can be preferable for heavy textures and games with high VRAM usage.
08Which is better for 4K?+
Radeon 840M is preferable for 4K, where total performance, memory bandwidth, and VRAM capacity have the greatest impact.
09Which is better for a quiet PC?+
HD 6870 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?+
HD 6870 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 Radeon 840M 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.