Radeon HD 6990 and Radeon HD 6970 - video card comparison
Passmark - benchmark score Radeon HD 6990 vs Radeon HD 6970
Radeon HD 6990
3103
Radeon HD 6970
2921
Radeon HD 6990
Radeon HD 6970
Architecture
TeraScale 3 (2010−2013)
Terascale 2 (2009−2015)
GPU code name
Antilles
Cayman
Market segment
Desktop
Desktop
Release date
March 2011
December 2010
Bus support
-
PCIe 2.0 x16
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin + 1x 8-pin
Boost clock speed
-
880 MHz
Core clock speed
830 MHz
-
Floating-point performance
2x 2,549.8 gflops
2,703.4 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
550 Watt
Texture fill rate
79.68
84.48
Memory type
GDDR5
DDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5000 MHz
1375 MHz
Memory bandwidth
160.0 GB/s
-
Display Connectors
1x DVI, 4x mini-DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
-
1
HDMI
-
+
DisplayPort support
-
-
DirectX
11.2 (11_0)
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.4
Shader Model
5.0
5.0
Vulkan
N/A
-
AppAcceleration
-
-
CrossFire
-
1
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-