Radeon HD 7970M and Radeon HD 6990M - video card comparison
Radeon HD 7970M
Radeon HD 6990M
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
Wimbledon XT
Blackcomb XTX
Market segment
Laptop
Laptop
Release date
May 2012
July 2011
Interface
MXM-B (3.0)
MXM-B (3.0)
Supplementary power connectors
None
None
Core clock speed
850 MHz
715 MHz
Floating-point performance
2,176 gflops
1,601.6 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
1,700 million
Pipelines / CUDA cores
1280
1120
Power consumption (TDP)
100 Watt
100 Watt
Texture fill rate
68.00
40.04
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
4800 MHz
900 MHz
Memory bandwidth
153.6 GB/s
115.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A