GeForce GTX 1660 Ti and GeForce GTX 645 OEM - video card comparison
GeForce GTX 1660 Ti
GeForce GTX 645 OEM
Architecture
Turing (2018−2021)
Kepler (2012−2018)
GPU code name
Turing TU116
GK106
Market segment
Desktop
Desktop
Release date
February 2019
April 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 8-pin
None
Boost clock speed
1770 MHz
-
Core clock speed
1500 MHz
824 MHz
Floating-point performance
-
949.2 gflops
Manufacturing process technology
12 nm
28 nm
Number of transistors
6,600 million
2,540 million
Pipelines / CUDA cores
1536
576
Power consumption (TDP)
120 Watt
65 Watt
Texture fill rate
169.9
39.55
Memory type
GDDR6
GDDR5
Maximum RAM amount
6 GB
1 GB
Memory bus width
192 Bit
128 Bit
Memory clock speed
12000 MHz
4000 MHz
Memory bandwidth
288.0 GB/s
64 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_1)
12 (11_0)
CUDA
7.5
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
6.5
5.1
Vulkan
1.2.131
1.1.126