Radeon HD 8770M and Radeon HD 7660G + HD 7670M Dual Graphics - video card comparison
Radeon HD 8770M
Radeon HD 7660G + HD 7670M Dual Graphics
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
Mars
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Market segment
Laptop
Laptop
Release date
November 2012
May 2012
Interface
PCIe 3.0 x8
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Boost clock speed
825 MHz
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Core clock speed
775 MHz
685 / 600 MHz
Floating-point performance
633.6 gflops
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Manufacturing process technology
28 nm
32 nm
Number of transistors
950 million
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Pipelines / CUDA cores
384
862
Texture fill rate
19.80
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Memory type
GDDR5
DDR3,GDDR5
Maximum RAM amount
2 GB
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Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1800 MHz
Memory bandwidth
72 GB/s
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Shared memory
-
-
Display Connectors
No outputs
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DirectX
12 (11_1)
11
OpenCL
1.2
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OpenGL
4.6
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Shader Model
5.1
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Vulkan
1.2.131
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