Radeon RX 640 and T400 4 GB - video card comparison
Passmark - benchmark score Radeon RX 640 vs T400 4 GB
Radeon RX 640
2020
T400 4 GB
3831
Radeon RX 640
T400 4 GB
Architecture
Polaris (2016−2019)
Turing (2018−2021)
GPU code name
Polaris 12
TU117
Market segment
Laptop
Desktop
Release date
August 2019
May 2021
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
1218 MHz
1425 MHz
Core clock speed
1218 MHz
-
Manufacturing process technology
14 nm
12 nm
Number of transistors
2,200 million
4,700 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
50 Watt
30 Watt
Texture fill rate
38.98
34.20
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
6000 MHz
10 GB/s
Memory bandwidth
112.0 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
3x mini-DisplayPort
HDMI
+
-
DirectX
12 (12_0)
12 (12_1)
CUDA
-
7.5
OpenCL
2.0
3.0
OpenGL
4.6
4.6
Shader Model
6.4
6.6
Vulkan
1.2.131
1.2
FreeSync
+
-