Radeon HD 7950 and Radeon HD 7970 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon HD 7970
Radeon HD 7950
4907
Radeon HD 7970
5405
Radeon HD 7950
Radeon HD 7970
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Tahiti
Tahiti XT
Market segment
Desktop
Desktop
Release date
January 2012
December 2011
Bus support
PCIe 3.0 x16
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
1250 MHz
925 MHz
Compute units
28
-
Floating-point performance
2,867 gflops
3,789 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
4,313 million
Pipelines / CUDA cores
1792
2048
Power consumption (TDP)
200 Watt
300 Watt
Texture fill rate
89.60
118.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
6 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
1250 MHz
1375 MHz
Memory bandwidth
240 GB/s
264 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
+
Number of Eyefinity displays
6
-
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
+
-