Radeon RX 640 and Radeon RX 6600 - video card comparison
Passmark - benchmark score Radeon RX 640 vs Radeon RX 6600
Radeon RX 640
2020
Radeon RX 6600
15586
Radeon RX 640
Radeon RX 6600
Architecture
Polaris (2016−2019)
Navi / RDNA2 (2020−2022)
GPU code name
Polaris 12
Navi 23
Market segment
Laptop
Desktop
Release date
August 2019
October 2021
Interface
PCIe 3.0 x8
PCIe 4.0 x8
Supplementary power connectors
None
1x 8-pin
Boost clock speed
1218 MHz
2491 MHz
Core clock speed
1218 MHz
2044 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
132 Watt
Texture fill rate
38.98
279.0
Memory type
GDDR5
GDDR6
Maximum RAM amount
4 GB
8 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
6000 MHz
14500 MHz
Memory bandwidth
112.0 GB/s
224.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x HDMI, 3x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12.0 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
+
-