Radeon HD 7970 and GeForce GTX 660 Ti - video card comparison
Passmark - benchmark score Radeon HD 7970 vs GeForce GTX 660 Ti
Radeon HD 7970
5405
GeForce GTX 660 Ti
4547
Radeon HD 7970
GeForce GTX 660 Ti
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Tahiti XT
GK104
Market segment
Desktop
Desktop
Release date
December 2011
August 2012
Bus support
PCIe 2.1 x16
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin + 1x 8-pin
Two 6-pin
SLI options
-
+
Boost clock speed
925 MHz
980 MHz
Core clock speed
-
915 MHz
CUDA cores
-
1344
Floating-point performance
3,789 gflops
2,459.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
3,540 million
Pipelines / CUDA cores
2048
1344
Power consumption (TDP)
300 Watt
150 Watt
Texture fill rate
118.4
102.5 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
2 GB
Memory bus width
384 Bit
192-bit GDDR5
Memory clock speed
1375 MHz
6.0 GB/s
Memory bandwidth
264 GB/s
144.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support
-
4 displays
Eyefinity
+
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
DisplayPort support
-
-
Audio input for HDMI
-
Internal
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-