GeForce GTX 660 OEM and Radeon HD 3450 - video card comparison
GeForce GTX 660 OEM
Radeon HD 3450
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK104
RV620
Market segment
Desktop
Desktop
Release date
August 2012
December 2007
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
None
Boost clock speed
888 MHz
-
Core clock speed
823 MHz
600 MHz
Floating-point performance
2,046 gflops
48 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
3,540 million
181 million
Pipelines / CUDA cores
1152
40
Power consumption (TDP)
130 Watt
25 Watt
Texture fill rate
85.25
2.400
Memory type
GDDR5
DDR2
Maximum RAM amount
2 GB
256 MB
Memory bus width
256 Bit
64 Bit
Memory clock speed
5600 MHz
1000 MHz
Memory bandwidth
179.2 GB/s
8 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x VGA, 1x S-Video
HDMI
+
-
DirectX
12 (11_0)
10.1 (10_1)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A