GeForce 840A and Radeon Graphics 128SP - video card comparison
GeForce 840A
Radeon Graphics 128SP
Architecture
Maxwell (2014−2018)
RDNA 2.0 (2020−2022)
GPU code name
GM108
Raphael
Market segment
Desktop
Desktop
Release date
March 2014
September 2022
Interface
PCIe 3.0 x8
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
1124 MHz
2200 MHz
Core clock speed
1029 MHz
-
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
-
3,400 million
Pipelines / CUDA cores
384
128
Power consumption (TDP)
33 Watt
15 Watt
Texture fill rate
17.98
17.60
Memory type
DDR3
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
2002 MHz
System Shared
Memory bandwidth
16.02 GB/s
-
Display Connectors
No outputs
Motherboard Dependent
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
5.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.1.126
1.3