Radeon HD 6970M Mac Edition and Radeon R9 M395 Mac Edition - video card comparison
Radeon HD 6970M Mac Edition
Radeon R9 M395 Mac Edition
Architecture
TeraScale 2 (2009−2015)
GCN 2.0 (2013−2017)
GPU code name
Blackcomb
Grenada
Market segment
Desktop
Desktop
Release date
August 2011
May 2015
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
None
Core clock speed
680 MHz
834 MHz
Floating-point performance
1,305.6 gflops
2,989 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
6,200 million
Pipelines / CUDA cores
960
1792
Power consumption (TDP)
75 Watt
250 Watt
Texture fill rate
32.64
93.41
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
3600 MHz
5460 MHz
Memory bandwidth
115.2 GB/s
174.7 GB/s
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.3
Vulkan
N/A
1.2.131