Radeon RX 640 and Radeon RX 6600M - video card comparison
Passmark - benchmark score Radeon RX 640 vs Radeon RX 6600M
Radeon RX 640
2020
Radeon RX 6600M
14091
Radeon RX 640
Radeon RX 6600M
Architecture
Polaris (2016−2019)
RDNA 2 (2020−2022)
GPU code name
Polaris 12
R21M-E65-70
Market segment
Laptop
Laptop
Release date
August 2019
September 2020
Interface
PCIe 3.0 x8
PCIe 4.0 x8
Supplementary power connectors
None
None
Boost clock speed
1218 MHz
2177 MHz
Core clock speed
1218 MHz
2068 MHz
Manufacturing process technology
14 nm
7 nm
Number of transistors
2,200 million
11,060 million
Pipelines / CUDA cores
640
1792
Power consumption (TDP)
50 Watt
100 Watt (50 - 100 Watt TGP)
Texture fill rate
38.98
235.8
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
8 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
6000 MHz
14000 MHz
Memory bandwidth
112.0 GB/s
256.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenCL
2.0
2.1
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
1.2.131
1.2
FreeSync
+
-