Radeon HD 7970 and Radeon HD 7970 GHz Edition - video card comparison
Radeon HD 7970
Radeon HD 7970 GHz Edition
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Tahiti XT
Tahiti
Market segment
Desktop
Desktop
Release date
December 2011
June 2012
Bus support
PCIe 2.1 x16
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
1x 6-pin + 1x 8-pin
Boost clock speed
925 MHz
1050 MHz
Floating-point performance
3,789 gflops
4,301 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
4,313 million
Pipelines / CUDA cores
2048
2048
Power consumption (TDP)
300 Watt
250 Watt
Texture fill rate
118.4
134.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
3 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
1375 MHz
1500 MHz
Memory bandwidth
264 GB/s
288 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
+
1
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 11
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
AppAcceleration
-
-
CrossFire
1
1
Enduro
-
-
FreeSync
1
1
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-