Radeon HD 7670M and GeForce GTX 660 Rev. 2 - video card comparison
Radeon HD 7670M
GeForce GTX 660 Rev. 2
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Thames XT
GK104
Market segment
Laptop
Desktop
Release date
June 2011
September 2014
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
-
1032 MHz
Core clock speed
600 MHz
980 MHz
Floating-point performance
576.0 gflops
1,981 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
3,540 million
Pipelines / CUDA cores
480
960
Power consumption (TDP)
20 Watt
140 Watt
Texture fill rate
14.40
82.56
Memory type
DDR3, (GDDR5)
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
192 Bit
Memory clock speed
1800 MHz
6008 MHz
Memory bandwidth
28.8 GB/s
144.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126