Bonaire and GeForce GT 640 Rev. 2 - video card comparison
Bonaire
GeForce GT 640 Rev. 2
Architecture
GCN 2.0 (2013−2017)
Kepler 2.0 (2013−2015)
GPU code name
Bonaire
GK208
Market segment
Desktop
Desktop
Release date
-
May 2013
Interface
-
PCIe 2.0 x8
Supplementary power connectors
-
None
Core clock speed
-
1046 MHz
Floating-point performance
-
803.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,080 million
915 million
Pipelines / CUDA cores
896
384
Power consumption (TDP)
-
49 Watt
Texture fill rate
-
33.47
Memory type
-
GDDR5
Maximum RAM amount
-
1 GB
Memory bus width
-
64 Bit
Memory clock speed
-
5008 MHz
Memory bandwidth
-
40.06 GB/s
Display Connectors
-
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
12 (12_0)
12 (11_0)
CUDA
-
3.5
OpenCL
2.1
1.2
OpenGL
4.6
4.6
Shader Model
6.5
5.1
Vulkan
1.2.170
1.1.126