GeForce GT 640M and GeForce GTX 1660 - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce GTX 1660
GeForce GT 640M
946
GeForce GTX 1660
12040
GeForce GT 640M
GeForce GTX 1660
Architecture
Kepler (2012−2018)
Turing (2018−2021)
GPU code name
N13P-GS
Turing TU116
Market segment
Laptop
Desktop
Release date
March 2012
March 2019
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
-
1x 8-pin
Boost clock speed
645 MHz
1785 MHz
Core clock speed
Up to 625 MHz
1530 MHz
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
12 nm
Number of transistors
1,270 million
6,600 million
Pipelines / CUDA cores
384
1408
Power consumption (TDP)
32 Watt
120 Watt
Texture fill rate
Up to 20.0 billion/sec
157.1
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
6 GB
Memory bus width
128bit
192 Bit
Memory clock speed
1800 - 4000 MHz
8000 MHz
Memory bandwidth
Up to 64.0 GB/s
192.1 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (12_1)
CUDA
+
7.5
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2.131
3D Blu-Ray
+
-
Optimus
+
-