GeForce 820M and Radeon RX 640 - video card comparison
Passmark - benchmark score GeForce 820M vs Radeon RX 640
GeForce 820M
511
Radeon RX 640
2020
GeForce 820M
Radeon RX 640
Architecture
Fermi (2010−2014)
Polaris (2016−2019)
GPU code name
N15V-GM
Polaris 12
Market segment
Laptop
Laptop
Release date
January 2014
August 2019
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
-
1218 MHz
Core clock speed
775 MHz
1218 MHz
Floating-point performance
240.0 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
585 million
2,200 million
Pipelines / CUDA cores
96
640
Power consumption (TDP)
15 Watt
50 Watt
Texture fill rate
10.00
38.98
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
1800 MHz
6000 MHz
Memory bandwidth
14.4 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (11_0)
12 (12_0)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
N/A
1.2.131
FreeSync
-
+
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-