Radeon HD 3450 and GeForce GT 640 OEM Rebrand - video card comparison
Radeon HD 3450
GeForce GT 640 OEM Rebrand
Architecture
TeraScale (2005−2013)
Fermi 2.0 (2010−2014)
GPU code name
RV620
GF116
Market segment
Desktop
Desktop
Release date
December 2007
April 2012
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
600 MHz
720 MHz
Floating-point performance
48 gflops
414.7 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
181 million
1,170 million
Pipelines / CUDA cores
40
144
Power consumption (TDP)
25 Watt
75 Watt
Texture fill rate
2.400
17.28
Memory type
DDR2
DDR3
Maximum RAM amount
256 MB
1536 MB
Memory bus width
64 Bit
192 Bit
Memory clock speed
1000 MHz
1600 MHz
Memory bandwidth
8 GB/s
38.4 GB/s
Display Connectors
1x DVI, 1x VGA, 1x S-Video
2x DVI, 1x mini-HDMI
HDMI
-
+
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
2.1
OpenCL
N/A
1.1
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
N/A