Radeon R7 M270 and Radeon HD 7640G + HD 7670M Dual Graphics - video card comparison
Radeon R7 M270
Radeon HD 7640G + HD 7670M Dual Graphics
Architecture
GCN (2011−2017)
Terascale 3 (2010−2013)
GPU code name
Opal XT / Mars
-
Market segment
Laptop
Laptop
Release date
January 2014
May 2012
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x8
-
Core clock speed
825 MHz
655 / 600 MHz
Floating-point performance
633.6 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
950 million
-
Pipelines / CUDA cores
384
736
Texture fill rate
19.80
-
Memory type
Not Listed
-
Maximum RAM amount
0 MB
-
Memory bus width
Not Listed
128 Bit
Memory clock speed
-
1800 MHz
Memory bandwidth
28.8 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
-
DirectX
DirectX® 11
11
Mantle
+
-
OpenCL
Not Listed
-
OpenGL
4.4
-
Shader Model
5.1
-
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-