Radeon 780M and Radeon RX 640 OEM - video card comparison
Radeon 780M
Radeon RX 640 OEM
Architecture
RDNA 3
GCN 4.0 (2016−2020)
GPU code name
Phoenix
Polaris 23
Market segment
Laptop
Desktop
Release date
January 2023
April 2020
Interface
PCIe 4.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
3000 MHz
-
Core clock speed
1500 MHz
1295 MHz
Manufacturing process technology
4 nm
14 nm
Number of transistors
25,390 million
2,200 million
Pipelines / CUDA cores
768
640
Power consumption (TDP)
54 Watt (35 - 54 Watt TGP)
50 Watt
Texture fill rate
139.2
51.80
Memory type
System Shared
GDDR5
Maximum RAM amount
System Shared
4 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
6 GB/s
Memory bandwidth
-
96 GB/s
Shared memory
+
-
Display Connectors
Portable Device Dependent
1x DisplayPort 1.4a, 2x mini-DisplayPort 1.4a
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenCL
2.1
2.1
OpenGL
4.6
4.6
Shader Model
6.7
6.7 (6.4)
Vulkan
1.3
1.3