GeForce GT 640M and GeForce GTX 1660 Mobile - video card comparison
GeForce GT 640M
GeForce GTX 1660 Mobile
Architecture
Kepler (2012−2018)
Turing (2018−2021)
GPU code name
N13P-GS
TU116B
Market segment
Laptop
Laptop
Release date
March 2012
May 2019
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Boost clock speed
645 MHz
1590 MHz
Core clock speed
Up to 625 MHz
1455 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
1280
Power consumption (TDP)
32 Watt
-
Texture fill rate
Up to 20.0 billion/sec
127.2
Memory type
DDR3\GDDR5
GDDR6
Maximum RAM amount
2 GB
6 GB
Memory bus width
128bit
192 Bit
Memory clock speed
1800 - 4000 MHz
16000 MHz
Memory bandwidth
Up to 64.0 GB/s
384.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 3x 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
1.2.140
3D Blu-Ray
+
-
Optimus
+
-