GeForce GTX 660 Ti and Radeon HD 6970 X2 - video card comparison
GeForce GTX 660 Ti
Radeon HD 6970 X2
Architecture
Kepler (2012−2018)
TeraScale 3 (2010−2013)
GPU code name
GK104
Antilles
Market segment
Desktop
Desktop
Release date
August 2012
-
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
Two 6-pin
3x 8-pin
SLI options
+
-
Boost clock speed
980 MHz
-
Core clock speed
915 MHz
880 MHz
CUDA cores
1344
-
Floating-point performance
2,459.5 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
2,640 million
Pipelines / CUDA cores
1344
1536
Power consumption (TDP)
150 Watt
375 Watt
Texture fill rate
102.5 billion/sec
84.48
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
5.5 GB/s
Memory bandwidth
144.2 GB/s
176.0 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
2x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
11.2 (11_0)
CUDA
+
-
OpenCL
1.2
1.2
OpenGL
4.3
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-