Radeon HD 7660D and GeForce GTX 660 Rev. 2 - video card comparison
Radeon HD 7660D
GeForce GTX 660 Rev. 2
Architecture
Terascale 3 (2010−2013)
Kepler (2012−2018)
GPU code name
Trinity
GK104
Market segment
Desktop
Desktop
Release date
September 2012
September 2014
Interface
IGP
PCIe 3.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
800 MHz
1032 MHz
Core clock speed
633 MHz
980 MHz
Floating-point performance
-
1,981 gflops
Manufacturing process technology
32 nm
28 nm
Number of transistors
1,303 million
3,540 million
Pipelines / CUDA cores
384
960
Power consumption (TDP)
100 Watt
140 Watt
Texture fill rate
19.20
82.56
Memory type
System Shared
GDDR5
Maximum RAM amount
System Shared
2 GB
Memory bus width
System Shared
192 Bit
Memory clock speed
System Shared
6008 MHz
Memory bandwidth
-
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