GeForce GTX 1060 6 GB and GeForce GT 640 Rev. 2 - video card comparison
GeForce GTX 1060 6 GB
GeForce GT 640 Rev. 2
Architecture
Pascal (2016−2021)
Kepler 2.0 (2013−2015)
GPU code name
GP106
GK208
Market segment
Desktop
Desktop
Release date
July 2016
May 2013
Interface
PCIe 3.0 x16
PCIe 2.0 x8
Supplementary power connectors
1x 6-pin
None
Boost clock speed
1708 MHz
-
Core clock speed
1506 MHz
1046 MHz
Floating-point performance
4,375 gflops
803.3 gflops
Manufacturing process technology
16 nm
28 nm
Number of transistors
4,400 million
915 million
Pipelines / CUDA cores
1280
384
Power consumption (TDP)
120 Watt
49 Watt
Texture fill rate
136.7
33.47
Memory type
GDDR5
GDDR5
Maximum RAM amount
6 GB
1 GB
Memory bus width
192 Bit
64 Bit
Memory clock speed
8000 MHz
5008 MHz
Memory bandwidth
192.2 GB/s
40.06 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 3x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
G-SYNC support
+
-
DirectX
12 (12_1)
12 (11_0)
CUDA
6.1
3.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126
VR Ready
+
-