Radeon HD 7950 and Radeon HD 6950 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon HD 6950
Radeon HD 7950
4907
Radeon HD 6950
2693
Radeon HD 7950
Radeon HD 6950
Architecture
GCN 1.0 (2012−2020)
TeraScale 3 (2010−2013)
GPU code name
Tahiti
Cayman
Market segment
Desktop
Desktop
Release date
January 2012
December 2010
Bus support
PCIe 3.0 x16
PCIe 2.0 x16
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Boost clock speed
1250 MHz
800 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
2,252.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
2,640 million
Pipelines / CUDA cores
1792
1408
Power consumption (TDP)
200 Watt
500 Watt
Texture fill rate
89.60
70.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
1250 MHz
1250 MHz
Memory bandwidth
240 GB/s
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
AppAcceleration
+
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
-
-
ZeroCore
+
-