GeForce GTX 660 Ti and Radeon HD 7970M X2 - video card comparison
GeForce GTX 660 Ti
Radeon HD 7970M X2
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK104
Wimbledon
Market segment
Desktop
Desktop
Release date
August 2012
April 2012
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
Two 6-pin
None
SLI options
+
-
Boost clock speed
980 MHz
-
Core clock speed
915 MHz
850 MHz
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
2,800 million
Pipelines / CUDA cores
1344
1280
Power consumption (TDP)
150 Watt
200 Watt
Texture fill rate
102.5 billion/sec
68.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
4.8 GB/s
Memory bandwidth
144.2 GB/s
153.6 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Portable Device Dependent
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_1)
CUDA
+
-
OpenCL
1.2
2.1 (1.2)
OpenGL
4.3
4.6
Shader Model
5.1
6.5 (5.1)
Vulkan
1.1.126
1.2.170
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-