Radeon HD 6750 and Radeon HD 7970 GHz Edition - video card comparison
Radeon HD 6750
Radeon HD 7970 GHz Edition
Architecture
TeraScale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
Juniper
Tahiti
Market segment
Desktop
Desktop
Release date
January 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
1x 6-pin
1x 6-pin + 1x 8-pin
Boost clock speed
900 MHz
1050 MHz
Floating-point performance
1,008.0 gflops
4,301 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,040 million
4,313 million
Pipelines / CUDA cores
720
2048
Power consumption (TDP)
86 Watt
250 Watt
Texture fill rate
25.20
134.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
1050 MHz
1500 MHz
Memory bandwidth
73.6 GB/s
288 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
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
-
-