Radeon HD 6670 and Radeon HD 7970 GHz Edition - video card comparison
Radeon HD 6670
Radeon HD 7970 GHz Edition
Architecture
TeraScale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
Turks
Tahiti
Market segment
Desktop
Desktop
Release date
April 2011
June 2012
Bus support
PCIe 2.0 x16
PCIe 2.1 x16
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin + 1x 8-pin
Boost clock speed
800 MHz
1050 MHz
Floating-point performance
768.0 gflops
4,301 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
4,313 million
Pipelines / CUDA cores
480
2048
Power consumption (TDP)
66 Watt
250 Watt
Texture fill rate
19.20
134.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
3 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
1050 MHz
1500 MHz
Memory bandwidth
64 GB/s
288 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
1
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
FreeSync
-
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-