GeForce GT 640 and GeForce GT 320 OEM - video card comparison
GeForce GT 640
GeForce GT 320 OEM
Architecture
Kepler (2012−2018)
Tesla 2.0 (2007−2013)
GPU code name
GK107
GT215
Market segment
Desktop
Desktop
Release date
June 2012
February 2010
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
902 MHz
540 MHz
Floating-point performance
692.7 gflops
187.49 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
727 million
Pipelines / CUDA cores
384
72
Power consumption (TDP)
65 Watt
43 Watt
Texture fill rate
28.86
12.96
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
1580 MHz
Memory bandwidth
28.51 GB/s
25.28 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (11_0)
11.1 (10_1)
CUDA
3.0
1.2
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A