Radeon HD 4870 and Radeon HD 6680G2 - video card comparison
Radeon HD 4870
Radeon HD 6680G2
Architecture
TeraScale (2005−2013)
Terascale 2 (2009−2015)
GPU code name
RV770
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Market segment
Desktop
Laptop
Release date
June 2008
June 2011
Interface
PCIe 2.0 x16
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Supplementary power connectors
2x 6-pin
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Core clock speed
750 MHz
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Floating-point performance
1,200.0 gflops
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Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
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Pipelines / CUDA cores
800
800
Power consumption (TDP)
150 Watt
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Texture fill rate
30.00
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Memory type
GDDR5
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Maximum RAM amount
1 GB
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Memory bus width
256 Bit
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Memory clock speed
3600 MHz
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Memory bandwidth
115.2 GB/s
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Shared memory
-
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Display Connectors
2x DVI, 1x S-Video
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DirectX
10.1 (10_1)
11
OpenCL
1.1
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OpenGL
3.3
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Shader Model
4.1
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Vulkan
N/A
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