Radeon HD 6990 and Cayman - video card comparison
Radeon HD 6990
Cayman
Architecture
TeraScale 3 (2010−2013)
TeraScale 3 (2010−2013)
GPU code name
Antilles
Cayman
Market segment
Desktop
Desktop
Release date
March 2011
-
Interface
PCIe 2.0 x16
-
Supplementary power connectors
2x 8-pin
-
Core clock speed
830 MHz
-
Floating-point performance
2x 2,549.8 gflops
-
Manufacturing process technology
40 nm
40 nm
Number of transistors
2,640 million
2,640 million
Pipelines / CUDA cores
1536
1536
Power consumption (TDP)
375 Watt
-
Texture fill rate
79.68
-
Memory type
GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
256 Bit
-
Memory clock speed
5000 MHz
-
Memory bandwidth
160.0 GB/s
-
Display Connectors
1x DVI, 4x mini-DisplayPort
-
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