Radeon HD 6990M and Radeon HD 7590M - video card comparison
Radeon HD 6990M
Radeon HD 7590M
Architecture
Terascale 2 (2009−2015)
Terascale 2 (2009−2015)
GPU code name
Blackcomb XTX
Thames XT
Market segment
Laptop
Laptop
Release date
July 2011
January 2012
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
Core clock speed
715 MHz
600 MHz
Floating-point performance
1,601.6 gflops
576.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
716 million
Pipelines / CUDA cores
1120
480
Power consumption (TDP)
100 Watt
18 Watt
Texture fill rate
40.04
14.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
900 MHz
3200 MHz
Memory bandwidth
115.2 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
Vulkan
N/A
N/A