Radeon RX 640 and GeForce GTX 1660 Ti Mobile Refresh - video card comparison
Radeon RX 640
GeForce GTX 1660 Ti Mobile Refresh
Architecture
Polaris (2016−2019)
Turing (2018−2021)
GPU code name
Polaris 12
TU116B
Market segment
Laptop
Laptop
Release date
August 2019
May 2019
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
-
Boost clock speed
1218 MHz
1590 MHz
Core clock speed
1218 MHz
-
Manufacturing process technology
14 nm
12 nm
Number of transistors
2,200 million
6,600 million
Pipelines / CUDA cores
640
1536
Power consumption (TDP)
50 Watt
-
Texture fill rate
38.98
152.6
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
6 GB
Memory bus width
64 Bit
192 Bit
Memory clock speed
6000 MHz
16 GB/s
Memory bandwidth
112.0 GB/s
384.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 3x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (12_1)
CUDA
-
7.5
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
1.2.131
1.2
FreeSync
+
-