Radeon HD 7950 and Radeon HD 6670 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon HD 6670
Radeon HD 7950
4907
Radeon HD 6670
752
Radeon HD 7950
Radeon HD 6670
Architecture
GCN 1.0 (2012−2020)
TeraScale 2 (2009−2015)
GPU code name
Tahiti
Turks
Market segment
Desktop
Desktop
Release date
January 2012
April 2011
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
None
Boost clock speed
1250 MHz
800 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
768.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
4,313 million
716 million
Pipelines / CUDA cores
1792
480
Power consumption (TDP)
200 Watt
66 Watt
Texture fill rate
89.60
19.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
1 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1250 MHz
1050 MHz
Memory bandwidth
240 GB/s
64 GB/s
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
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
+
-