Radeon HD 6990 and Radeon HD 5870 Eyefinity 6 - video card comparison
Radeon HD 6990
Radeon HD 5870 Eyefinity 6
Architecture
TeraScale 3 (2010−2013)
TeraScale 2 (2009−2015)
GPU code name
Antilles
Cypress
Market segment
Desktop
Desktop
Release date
March 2011
March 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin + 1x 8-pin
Core clock speed
830 MHz
850 MHz
Floating-point performance
2x 2,549.8 gflops
2,720.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
2,640 million
2,154 million
Pipelines / CUDA cores
1536
1600
Power consumption (TDP)
375 Watt
228 Watt
Texture fill rate
79.68
68.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5000 MHz
4800 MHz
Memory bandwidth
160.0 GB/s
153.6 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
6x 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