Radeon HD 6990 and Radeon R7 Graphics - video card comparison
Radeon HD 6990
Radeon R7 Graphics
Architecture
TeraScale 3 (2010−2013)
GCN 2.0 (2013−2017)
GPU code name
Antilles
Spectre
Market segment
Desktop
Desktop
Release date
March 2011
January 2014
Interface
PCIe 2.0 x16
IGP
Supplementary power connectors
2x 8-pin
-
Boost clock speed
-
980 MHz
Core clock speed
830 MHz
686 MHz
Floating-point performance
2x 2,549.8 gflops
526.8 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
2,640 million
2,410 million
Pipelines / CUDA cores
1536
512
Power consumption (TDP)
375 Watt
15 Watt
Texture fill rate
79.68
31.36
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
5000 MHz
System Shared
Memory bandwidth
160.0 GB/s
-
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
DirectX
11.2 (11_0)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.4
4.6
Shader Model
5.0
6.0
Vulkan
N/A
1.2.131