Radeon HD 7640G and Mobility Radeon HD 4270 IGP - video card comparison
Radeon HD 7640G
Mobility Radeon HD 4270 IGP
Architecture
Terascale 3 (2010−2013)
TeraScale (2005−2013)
GPU code name
Trinity
RS880
Market segment
Laptop
Desktop
Release date
May 2012
May 2010
Interface
IGP
PCIe 1.0 x16
Supplementary power connectors
-
None
Boost clock speed
686 MHz
-
Core clock speed
497 MHz
590 MHz
Manufacturing process technology
32 nm
55 nm
Number of transistors
1,303 million
181 million
Pipelines / CUDA cores
256
40
Power consumption (TDP)
35 Watt
-
Texture fill rate
10.96
2.360
Memory type
System Shared
System Shared
Maximum RAM amount
System Shared
System Shared
Memory bus width
System Shared
System Shared
Memory clock speed
System Shared
System Shared
Shared memory
+
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
10.1 (10_1)
OpenCL
1.2
1.0
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
N/A
N/A