GeForce GT 640M Mac Edition and Radeon Graphics 128SP - video card comparison
GeForce GT 640M Mac Edition
Radeon Graphics 128SP
Architecture
Kepler (2012−2018)
RDNA 2.0 (2020−2022)
GPU code name
GK107
Raphael
Market segment
Desktop
Desktop
Release date
February 2013
September 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
-
2200 MHz
Core clock speed
745 MHz
-
Floating-point performance
572.2 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
1,270 million
3,400 million
Pipelines / CUDA cores
384
128
Power consumption (TDP)
32 Watt
15 Watt
Texture fill rate
23.84
17.60
Memory type
GDDR5
System Shared
Maximum RAM amount
512 MB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
5000 MHz
System Shared
Memory bandwidth
40 GB/s
-
Display Connectors
No outputs
Motherboard Dependent
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.1.126
1.3