Radeon HD 6990 and Radeon HD 6850 - video card comparison
Passmark - benchmark score Radeon HD 6990 vs Radeon HD 6850
Radeon HD 6990
3103
Radeon HD 6850
2030
Radeon HD 6990
Radeon HD 6850
Architecture
TeraScale 3 (2010−2013)
TeraScale 2 (2009−2015)
GPU code name
Antilles
Barts
Market segment
Desktop
Desktop
Release date
March 2011
October 2010
Bus support
-
AGP
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin
Core clock speed
830 MHz
-
Floating-point performance
2x 2,549.8 gflops
1,488.0 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
2,640 million
1,700 million
Pipelines / CUDA cores
1536
960
Power consumption (TDP)
375 Watt
127 Watt
Texture fill rate
79.68
37.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5000 MHz
-
Memory bandwidth
160.0 GB/s
128.0 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
-
-