Radeon HD 7970M and Radeon E8870 MXM - video card comparison
Radeon HD 7970M
Radeon E8870 MXM
Architecture
GCN (2011−2017)
GCN 2.0 (2013−2017)
GPU code name
Wimbledon XT
Saturn
Market segment
Laptop
Desktop
Release date
May 2012
September 2015
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
None
Core clock speed
850 MHz
1000 MHz
Floating-point performance
2,176 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
2,080 million
Pipelines / CUDA cores
1280
768
Power consumption (TDP)
100 Watt
75 Watt
Texture fill rate
68.00
48.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4800 MHz
6 GB/s
Memory bandwidth
153.6 GB/s
96 GB/s
Shared memory
-
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5 (6.0)
Vulkan
1.2.131
1.2.170