Radeon HD 7640G + HD 7670M Dual Graphics and Radeon HD 8670M - video card comparison
Radeon HD 7640G + HD 7670M Dual Graphics
Radeon HD 8670M
Architecture
Terascale 3 (2010−2013)
GCN (2011−2017)
GPU code name
-
Sun
Market segment
Laptop
Laptop
Release date
May 2012
November 2012
Interface
-
PCIe 3.0 x8
Boost clock speed
-
825 MHz
Core clock speed
655 / 600 MHz
775 MHz
Floating-point performance
-
633.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
-
690 million
Pipelines / CUDA cores
736
384
Texture fill rate
-
19.50
Memory type
-
DDR3
Maximum RAM amount
-
2 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1800 MHz
2000 MHz
Memory bandwidth
-
16 GB/s
Shared memory
+
-
Display Connectors
-
No outputs
DirectX
11
12 (11_1)
OpenCL
-
1.2
OpenGL
-
4.6
Shader Model
-
5.1
Vulkan
-
1.2.131