NVIDIA
GeForce GTX 660 vs Radeon RX 6800
Full comparison of specs, performance and benchmarks
AMD
RX 6800
Aggregate performance score
We've compared GTX 660 and RX 6800 across specs and all relevant benchmarks.
↗RX 6800 outperforms GTX 660 by ~61% on the catalog index; this is not a measured FPS gain.+61%
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 6, 2026
Limited verified data
H2HBench Verdict
Equal catalog scores
The score difference is not a measured FPS improvement.
Reasons to consider GTX 660
- Lower stated power consumption
- Higher catalog value index
- Recorded feature support: OpenCL 3.0, CUDA 3.0 · Not supported
Reasons to consider RX 6800
- Higher catalog performance index
- More graphics memory
- Recorded feature support: OpenCL 2.1 · FSR
Catalog metrics radar
Axes with missing data are hidden; every value uses a fixed scale.
NVIDIA
AMDPerformance
Efficiency
Price / performance
Memory capacity
3353
7971
10036
5688
Graphics card ranking
Positions 55–60of 321
Which should you choose?
Two practical conclusions based on community votes and gaming value.
Radeon RX 6800
152 likesHead to Head visitors currently choose this model more often.
GeForce GTX 660
Price $23.00Based 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
53Better
Professional applications3D modeling, video editing, and rendering
30
45Better
AI and machine learningMachine-learning and AI capabilities
28
42Better
Power efficiencyPower consumption across workloads
79Better
71
Head to Head scoreOverall catalog score
49
49
Specifications
The better numeric value is highlighted in green, taking the metric direction into account.
DisplayPort
HDMI
Device class
USB Type-C
DirectX
Vulkan
OpenGL
TFLOPSBetter
Power consumptionBetter
Release date
Architecture
Process nodeBetter
Clock speedBetter
Memory type
Power connector
Thickness
Base clockBetter
Boost clockBetter
VRAMBetter
Memory frequencyBetter
Memory busBetter
Memory bandwidthBetter
Interface
Power consumptionBetter
Recommended PSUBetter
Max monitors
Max resolution
LengthBetter
Compute API
Launch priceBetter
Shader units / coresBetter
Die sizeBetter
Memory cache
Transistor countBetter
Upscaling
Gaming FPS
Available results are shown separately; missing data is not treated as zero.
The Gaming FPS section compares GTX 660 and RX 6800 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.
GTX 660RX 6800
Verified externalEstimatedSources ↗
Counter-Strike 2
1080p High
167 FPS
218 FPS
1080p Ultra
114 FPS
153 FPS
1440p Ultra
64 FPS
119 FPS
4K Ultra
23 FPS
59 FPS
Counter-Strike 2GTX 660167 FPSRX 6800218 FPSGTX 660114 FPSRX 6800153 FPSGTX 66064 FPSRX 6800119 FPSGTX 66023 FPSRX 680059 FPS
Cyberpunk 2077GTX 660108 FPSRX 6800141 FPSGTX 66090 FPSRX 6800121 FPSGTX 66046 FPSRX 680086 FPSGTX 66015 FPSRX 680040 FPS
Forza Horizon 5GTX 660136 FPSRX 6800177 FPSGTX 66085 FPSRX 6800115 FPSGTX 66057 FPSRX 6800107 FPSGTX 66033 FPSRX 680087 FPS
Hogwarts LegacyGTX 66088 FPSRX 6800115 FPSGTX 66071 FPSRX 680096 FPSGTX 66041 FPSRX 680077 FPSGTX 66015 FPSRX 680040 FPS
H2H workload indices
Comparable internal indices on a fixed 0–100 scale.
H2H Raster IndexH2H Index / 100335347%
H2H Compute IndexH2H Index / 100376149%
H2H Rendering IndexH2H Index / 100396347%
H2H Memory Workload IndexH2H Index / 100568844%
H2H Efficiency IndexH2H Index / 100797111%
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 / 100436946%
H2H ML Training IndexH2H Index / 100426746%
H2H Inference IndexH2H Index / 100396347%
H2H Local LLM IndexH2H Index / 100457246%
H2H Computer Vision IndexH2H Index / 100406446%
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
DirectX11.012.2
Vulkan1.21.4
OpenGL4.64.6
UpscalingNot supportedFSR
Compute APIOpenCL 3.0, CUDA 3.0OpenCL 2.1
Architecture and release
ArchitectureKeplerRDNA 2.0
Process node28 nm7 nmBetter
Release date20122020
Device classDesktopDesktop
GPU cores, die and clocks
Transistor count2540 million26800 millionBetter
Die size221 mm²Better520 mm²
Shader units / cores9603840Better
Base clock980 MHz1700 MHzBetter
Boost clock1032 MHz2105 MHzBetter
Board size, power and compatibility
InterfacePCIe 3x16PCIe 4x16
Length241 mmBetter267 mm
ThicknessDual-slotDual-slot
Recommended PSU300 WBetter600 W
Power connector6 pin8+8 pin
Display outputs and limits
HDMIHDMI 1.4aHDMI 2.1
DisplayPortDisplayPort 1.2DisplayPort 1.4a
USB Type-CNoYes
Max monitors44
Max resolution4096 × 21607680 × 4320
Memory and compute throughput
VRAM2 GB GDDR516 GB GDDR6Better
Memory typeGDDR5GDDR6
Memory bus192 bit256 bitBetter
TFLOPS1.98116.17Better
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
- 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 (5)
- · 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: GTX 660 or RX 6800?+
GTX 660 has the higher overall gaming score, while GTX 660 offers the better price-to-performance ratio. The final choice depends on resolution and settings.
02Which is better for streaming?+
GTX 660 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?+
GTX 660 is generally the better option for Blender and GPU rendering. Rendering-engine support and available VRAM also matter.
04Which is better for video editing?+
GTX 660 offers more overall performance, while GTX 660 offers more memory headroom. Codecs, hardware encoders, and editor optimization can change the result.
05Which is better for neural networks and AI?+
GTX 660 is the more practical option for local AI workloads. VRAM capacity, compute libraries, and framework compatibility are especially important.
06Which is better for 1080p?+
GTX 660 is the most rational 1080p choice, where high frame rates and cost per frame matter most.
07Which is better for 1440p?+
GTX 660 leads in combined 1440p performance. GTX 660 can be preferable for heavy textures and games with high VRAM usage.
08Which is better for 4K?+
GTX 660 is preferable for 4K, where total performance, memory bandwidth, and VRAM capacity have the greatest impact.
09Which is better for a quiet PC?+
GTX 660 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?+
GTX 660 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 GTX 660 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.